Tema 2 cuarto a
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The document summarizes the key parts and functions of the digestive, excretory, circulatory, nervous, locomotor, and reproductive systems. It provides descriptions and diagrams to explain how nutrients and waste are processed through the body. It also describes the process of development from a fertilized egg to a newborn baby.
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The digestive system
This document provides an overview of the human digestive system. It describes each organ of the digestive system and its function, including the mouth, esophagus, stomach, small intestine, large intestine, liver, gallbladder and pancreas. The digestive system breaks down food into nutrients, which are then absorbed and used by the body for energy, growth and proper functioning. Waste products are later eliminated from the body.
The digestive system
The document compares the digestive system and brain to structures in a school.
The digestive system is compared to areas of the school - the mouth is like the office doors, the esophagus is like hallways, the stomach is like the staff room, the small intestine is like the library, the large intestine is like plumbing, the rectum is like a toilet, the pancreas is like the principal, and the liver is like students.
The brain is also compared to school areas - the cerebrum is like the office, the cerebellum is like teachers, the thalamus is like the computer lab, and the brain stem is like the PA system.
Ns 3 unit 5 the excretory system
The excretory system removes excess water and waste products from the body through the kidneys, ureters, bladder, and urethra. The kidneys filter waste from the blood to produce urine, which travels through the ureters to the bladder. When full, the bladder signals the brain to empty urine out through the urethra.
THE EXCRETORY SYSTEM
The excretory system helps the body eliminate excess water and waste products through the kidneys, ureters, bladder, and urethra. The kidneys filter blood and remove waste and water, which travels through ureters to the bladder for storage until it is released through the urethra.
The excretory system
The excretory system helps the body eliminate excess water and waste products through the kidneys, ureters, bladder, and urethra. The kidneys filter blood and remove waste and water, which travels through ureters to the bladder for storage until it is full and signals the brain to empty through the urethra.
Ns 3 unit 5 the digestive system
The digestive system breaks down food and extracts nutrients. It is made up of the mouth, esophagus, stomach, small intestine, large intestine, and anus. Food is broken down by teeth and enzymes as it passes through each part of the digestive system. The nutrients are then absorbed into the bloodstream in the small intestine.
Digestive system - CLASS V
The document describes the human digestive system. It explains that the digestive system is made up of a long twisting tube called the alimentary canal or digestive tract, which runs from the mouth to the anus. It details the main organs in the digestive system including the mouth, esophagus, stomach, small intestine, large intestine, rectum, anus, and accessory organs like the liver, gallbladder and pancreas. It explains their functions and roles in digesting and absorbing food and eliminating waste.
Human reproduction2012
The document describes the male and female reproductive systems. In males, sperm and sex hormones are produced in the testes and travel through the urethra. In females, eggs are produced in the ovaries and can be fertilized in the fallopian tubes, while the uterus nourishes a fetus if pregnancy occurs. Both sexes have urinary bladders that store urine.
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The digestive system
This document provides an overview of the human digestive system. It describes each organ of the digestive system and its function, including the mouth, esophagus, stomach, small intestine, large intestine, liver, gallbladder and pancreas. The digestive system breaks down food into nutrients, which are then absorbed and used by the body for energy, growth and proper functioning. Waste products are later eliminated from the body.
The digestive system
The document compares the digestive system and brain to structures in a school.
The digestive system is compared to areas of the school - the mouth is like the office doors, the esophagus is like hallways, the stomach is like the staff room, the small intestine is like the library, the large intestine is like plumbing, the rectum is like a toilet, the pancreas is like the principal, and the liver is like students.
The brain is also compared to school areas - the cerebrum is like the office, the cerebellum is like teachers, the thalamus is like the computer lab, and the brain stem is like the PA system.
Ns 3 unit 5 the excretory system
The excretory system removes excess water and waste products from the body through the kidneys, ureters, bladder, and urethra. The kidneys filter waste from the blood to produce urine, which travels through the ureters to the bladder. When full, the bladder signals the brain to empty urine out through the urethra.
THE EXCRETORY SYSTEM
The excretory system helps the body eliminate excess water and waste products through the kidneys, ureters, bladder, and urethra. The kidneys filter blood and remove waste and water, which travels through ureters to the bladder for storage until it is released through the urethra.
The excretory system
The excretory system helps the body eliminate excess water and waste products through the kidneys, ureters, bladder, and urethra. The kidneys filter blood and remove waste and water, which travels through ureters to the bladder for storage until it is full and signals the brain to empty through the urethra.
Ns 3 unit 5 the digestive system
The digestive system breaks down food and extracts nutrients. It is made up of the mouth, esophagus, stomach, small intestine, large intestine, and anus. Food is broken down by teeth and enzymes as it passes through each part of the digestive system. The nutrients are then absorbed into the bloodstream in the small intestine.
Digestive system - CLASS V
The document describes the human digestive system. It explains that the digestive system is made up of a long twisting tube called the alimentary canal or digestive tract, which runs from the mouth to the anus. It details the main organs in the digestive system including the mouth, esophagus, stomach, small intestine, large intestine, rectum, anus, and accessory organs like the liver, gallbladder and pancreas. It explains their functions and roles in digesting and absorbing food and eliminating waste.
Human reproduction2012
The document describes the male and female reproductive systems. In males, sperm and sex hormones are produced in the testes and travel through the urethra. In females, eggs are produced in the ovaries and can be fertilized in the fallopian tubes, while the uterus nourishes a fetus if pregnancy occurs. Both sexes have urinary bladders that store urine.
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The human digestive system breaks down food through a multi-step process where food is cut and mixed with liquids in the mouth, stomach and small intestine to dissolve nutrients that are then absorbed into the bloodstream. Undigested waste then moves to the large intestine where water is absorbed before remaining waste is expelled through the anus.
Ci 401 reprod. sys
The document discusses the human reproductive system. It provides information about the organs of the male reproductive system, which include the testes, sperm duct, scrotum, and penis. It also lists the organs of the female reproductive system, such as the ovaries, uterus, cervix, and vagina. The document explains that sex cells, also known as gametes, are sperm and eggs, and that sperm are produced in the testes while eggs are produced in the ovaries.
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The digestive system breaks down food and extracts nutrients. It is composed of the mouth, esophagus, stomach, small intestine, large intestine, and anus. Food is ingested, travels through the esophagus to the stomach where gastric juices break it down, then enters the small intestine where nutrients are absorbed into the bloodstream. Remaining waste moves to the large intestine and exits through the anus. The excretory system removes waste from the body through the kidneys, ureters, bladder, and urethra. The kidneys filter waste from the blood into urine, which travels to the bladder and is released through the urethra.
The Digestive System
The document discusses the major organs that make up the human digestive system. It describes 11 organs including the mouth, esophagus, stomach, liver, small intestine, large intestine, and anus. Each organ plays an important role in breaking down food, absorbing nutrients, and eliminating waste to help the body get energy from food.
Reproductive systems
The document describes the basic anatomy and functions of the male and female reproductive systems. The male system includes the scrotum which houses the testes and helps keep sperm cool, the penis, and the production of millions of sperm cells. The female system includes the ovaries which produce eggs, the uterus or womb where fertilization may occur, and the natural death of unfertilized eggs.
Module 2
This document provides information about the human body systems including the digestive system, excretory system, circulatory system, and nervous system. It describes the key organs and functions of the digestive system in breaking down and absorbing food. The excretory system section outlines the kidneys, ureters, bladder and urethra which work to filter waste from the blood and remove it from the body as urine. The circulatory system transports blood around the body while the nervous system allows the brain to control the body through neurons and connections. Hands-on experiments and videos are suggested to learn more about each system.
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The document summarizes the human urinary system and how it works to filter waste from the blood. It discusses:
1) The kidneys filter waste from the blood and remove it from the body through urine.
2) The urine travels from the kidneys to the urinary bladder through ureters.
3) The bladder stores urine until it is full enough to be emptied through the urethra.
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The document discusses the major body systems and their functions. It describes the digestive system which breaks down food for nutrients, the circulatory system which transports blood around the body, and the respiratory and excretory systems. It also discusses the nervous system and senses which allow the body to receive external information. Reproduction is explained through the male and female reproductive systems and how fertilization occurs.
The Body System
The document describes the main parts of the respiratory and digestive systems and provides analogies comparing each part to elements of a school. The respiratory system allows breathing and includes the trachea, bronchi, bronchioles and alveoli. The digestive system allows food digestion over one day and includes the mouth, esophagus, stomach, small intestine, large intestine and rectum. Additional parts discussed are the liver and pancreas.
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The document describes the male and female reproductive systems. In the male system, the testes produce sperm which are stored in the epididymis and transported through the vas deferens, seminal vesicles, prostate gland, and urethra to the penis for ejaculation. In the female system, the ovaries produce eggs which travel through the oviducts to the uterus for potential fertilization and embryo implantation and development until birth through the cervix and vagina.
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The document outlines the five main stages of human life: infancy, childhood, adolescence, adulthood, and old age. It then provides more details about the male and female reproductive systems, describing the key organs involved in sperm production and transportation for males (testicles, vas deferens, seminal vesicles, urethra, penis), and egg production and development for females (ovaries, fallopian tubes, uterus, vagina, vulva).
Body Systems
The document summarizes the key parts and functions of the respiratory and digestive systems, and provides analogies comparing each part to elements of a school. The respiratory system allows breathing and includes the trachea, bronchi, bronchioles and alveoli. The digestive system allows food digestion over one day and includes the mouth, esophagus, stomach, small intestine, large intestine, rectum, liver and pancreas.
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The document compares parts of the digestive and nervous systems to different areas of a school. The mouth is like the entrance to the school. The esophagus is like the hallway that leads to the stomach, which is compared to the cafeteria. The liver and pancreas are like classrooms that prepare food for digestion. The small and large intestines and rectum move food through the body like students moving through a playground, field, and exiting at the final bell. In the nervous system, the cerebrum is like the principal, the thalamus is like a game of dodgeball, the cerebellum is a gym, and the brain stem is an office that sends messages.
Male reproductive system
The document summarizes the main parts and functions of the male reproductive system. It describes the penis, scrotum, testicles, epididymis, vas deferens, seminal vesicles, prostate gland, and bulbourethral glands. It explains that the male reproductive system produces and transports sperm and male sex hormones to facilitate reproduction.
Reproductive systems
The document summarizes the key parts of the male and female reproductive systems. The male system includes the scrotum which holds the testes and keeps sperm cool, sperm tubes which transport sperm, and glands which add fluid to sperm. The penis becomes erect to expel semen containing hundreds of millions of sperm during ejaculation. In females, ovaries produce eggs and hormones, eggs pass through the egg tube and into the uterus monthly, and the cervix leads to the vagina from the uterus.
A Fetal Pig Dissection
This document is a virtual fetal pig dissection guide presented as a PowerPoint. It summarizes the major anatomical systems of a fetal pig, including the external structures, oral cavity, thoracic cavity, respiratory system, heart, digestive system, excretory system, circulatory system, and reproductive systems of both male and female pigs. The presentation is intended to review what students learned from an actual dissection and help them prepare for an exam by identifying and labeling important structures.
Excretorysystem
The document discusses the human excretory (also known as the urinary) system. It describes how the bladder sends a message to the brain when full, signaling the need to go to the bathroom. It also states that the excretory system acts as the body's garbage container and collects waste from parts of the body. The system has several parts that work together and allows for functions like signaling the need to use the bathroom and waste removal.
Male reproductive system
The male reproductive system produces and transports sperm and releases it into the female vagina. The testes produce sperm, which travel through the epididymis, ductus deferens, and urethra. These ducts receive fluids from accessory glands like the seminal vesicles and prostate to nourish and transport sperm. During ejaculation, semen containing sperm is expelled from the urethra by the penis into the vagina to fertilize an egg.
Down The Hatch
The document summarizes the journey of food through the digestive system in 7 steps:
1) Food is chewed in the mouth by teeth and mixed with saliva before being swallowed down the esophagus.
2) The esophagus squeezes food into the stomach where it is further broken down by acids and muscular contractions.
3) Nutrients from the food are then absorbed through villi in the small intestine and enter the bloodstream, while waste continues through the large intestine.
4) In the large intestine, water is absorbed from the waste as it is compacted and pushed through the system before being expelled from the anus.
The organisation of living things
Living things are organized from cells to systems. Cells make up tissues, tissues make up organs, and organs work together in systems to carry out the basic life processes of interaction, reproduction and nutrition. There are differences between plant and animal cells, such as plant cells having a cell wall and vacuoles, but generally cells are the basic unit of structure and function for all living things.
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The document discusses different nutrients including minerals and vitamins, carbohydrates, proteins, fats, and provides information on each. It also provides tips for a healthy lifestyle including being active, limiting screen time, and getting enough sleep. Finally, it discusses some important medical discoveries and inventions like penicillin, vaccination, and ultrasound machines.
Tema 2 cuarto a
The document summarizes the key parts and functions of the digestive, excretory, circulatory, nervous, locomotor, and reproductive systems. It provides descriptions of processes like digestion, urine production, blood flow, neural signaling, embryonic development, and labeling diagrams of body systems. The question and answer format covers topics such as the differences between veins and arteries, oxygen transport through capillaries, sequencing events, and responses to stimuli.
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The human digestive system breaks down food through a multi-step process where food is cut and mixed with liquids in the mouth, stomach and small intestine to dissolve nutrients that are then absorbed into the bloodstream. Undigested waste then moves to the large intestine where water is absorbed before remaining waste is expelled through the anus.
Ci 401 reprod. sys
The document discusses the human reproductive system. It provides information about the organs of the male reproductive system, which include the testes, sperm duct, scrotum, and penis. It also lists the organs of the female reproductive system, such as the ovaries, uterus, cervix, and vagina. The document explains that sex cells, also known as gametes, are sperm and eggs, and that sperm are produced in the testes while eggs are produced in the ovaries.
Ns 3 unit 5 the digestive system
The digestive system breaks down food and extracts nutrients. It is composed of the mouth, esophagus, stomach, small intestine, large intestine, and anus. Food is ingested, travels through the esophagus to the stomach where gastric juices break it down, then enters the small intestine where nutrients are absorbed into the bloodstream. Remaining waste moves to the large intestine and exits through the anus. The excretory system removes waste from the body through the kidneys, ureters, bladder, and urethra. The kidneys filter waste from the blood into urine, which travels to the bladder and is released through the urethra.
The Digestive System
The document discusses the major organs that make up the human digestive system. It describes 11 organs including the mouth, esophagus, stomach, liver, small intestine, large intestine, and anus. Each organ plays an important role in breaking down food, absorbing nutrients, and eliminating waste to help the body get energy from food.
Reproductive systems
The document describes the basic anatomy and functions of the male and female reproductive systems. The male system includes the scrotum which houses the testes and helps keep sperm cool, the penis, and the production of millions of sperm cells. The female system includes the ovaries which produce eggs, the uterus or womb where fertilization may occur, and the natural death of unfertilized eggs.
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This document provides information about the human body systems including the digestive system, excretory system, circulatory system, and nervous system. It describes the key organs and functions of the digestive system in breaking down and absorbing food. The excretory system section outlines the kidneys, ureters, bladder and urethra which work to filter waste from the blood and remove it from the body as urine. The circulatory system transports blood around the body while the nervous system allows the brain to control the body through neurons and connections. Hands-on experiments and videos are suggested to learn more about each system.
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The document summarizes the human urinary system and how it works to filter waste from the blood. It discusses:
1) The kidneys filter waste from the blood and remove it from the body through urine.
2) The urine travels from the kidneys to the urinary bladder through ureters.
3) The bladder stores urine until it is full enough to be emptied through the urethra.
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The document discusses the major body systems and their functions. It describes the digestive system which breaks down food for nutrients, the circulatory system which transports blood around the body, and the respiratory and excretory systems. It also discusses the nervous system and senses which allow the body to receive external information. Reproduction is explained through the male and female reproductive systems and how fertilization occurs.
The Body System
The document describes the main parts of the respiratory and digestive systems and provides analogies comparing each part to elements of a school. The respiratory system allows breathing and includes the trachea, bronchi, bronchioles and alveoli. The digestive system allows food digestion over one day and includes the mouth, esophagus, stomach, small intestine, large intestine and rectum. Additional parts discussed are the liver and pancreas.
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The document describes the male and female reproductive systems. In the male system, the testes produce sperm which are stored in the epididymis and transported through the vas deferens, seminal vesicles, prostate gland, and urethra to the penis for ejaculation. In the female system, the ovaries produce eggs which travel through the oviducts to the uterus for potential fertilization and embryo implantation and development until birth through the cervix and vagina.
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The document outlines the five main stages of human life: infancy, childhood, adolescence, adulthood, and old age. It then provides more details about the male and female reproductive systems, describing the key organs involved in sperm production and transportation for males (testicles, vas deferens, seminal vesicles, urethra, penis), and egg production and development for females (ovaries, fallopian tubes, uterus, vagina, vulva).
Body Systems
The document summarizes the key parts and functions of the respiratory and digestive systems, and provides analogies comparing each part to elements of a school. The respiratory system allows breathing and includes the trachea, bronchi, bronchioles and alveoli. The digestive system allows food digestion over one day and includes the mouth, esophagus, stomach, small intestine, large intestine, rectum, liver and pancreas.
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The document compares parts of the digestive and nervous systems to different areas of a school. The mouth is like the entrance to the school. The esophagus is like the hallway that leads to the stomach, which is compared to the cafeteria. The liver and pancreas are like classrooms that prepare food for digestion. The small and large intestines and rectum move food through the body like students moving through a playground, field, and exiting at the final bell. In the nervous system, the cerebrum is like the principal, the thalamus is like a game of dodgeball, the cerebellum is a gym, and the brain stem is an office that sends messages.
Male reproductive system
The document summarizes the main parts and functions of the male reproductive system. It describes the penis, scrotum, testicles, epididymis, vas deferens, seminal vesicles, prostate gland, and bulbourethral glands. It explains that the male reproductive system produces and transports sperm and male sex hormones to facilitate reproduction.
Reproductive systems
The document summarizes the key parts of the male and female reproductive systems. The male system includes the scrotum which holds the testes and keeps sperm cool, sperm tubes which transport sperm, and glands which add fluid to sperm. The penis becomes erect to expel semen containing hundreds of millions of sperm during ejaculation. In females, ovaries produce eggs and hormones, eggs pass through the egg tube and into the uterus monthly, and the cervix leads to the vagina from the uterus.
A Fetal Pig Dissection
This document is a virtual fetal pig dissection guide presented as a PowerPoint. It summarizes the major anatomical systems of a fetal pig, including the external structures, oral cavity, thoracic cavity, respiratory system, heart, digestive system, excretory system, circulatory system, and reproductive systems of both male and female pigs. The presentation is intended to review what students learned from an actual dissection and help them prepare for an exam by identifying and labeling important structures.
Excretorysystem
The document discusses the human excretory (also known as the urinary) system. It describes how the bladder sends a message to the brain when full, signaling the need to go to the bathroom. It also states that the excretory system acts as the body's garbage container and collects waste from parts of the body. The system has several parts that work together and allows for functions like signaling the need to use the bathroom and waste removal.
Male reproductive system
The male reproductive system produces and transports sperm and releases it into the female vagina. The testes produce sperm, which travel through the epididymis, ductus deferens, and urethra. These ducts receive fluids from accessory glands like the seminal vesicles and prostate to nourish and transport sperm. During ejaculation, semen containing sperm is expelled from the urethra by the penis into the vagina to fertilize an egg.
Down The Hatch
The document summarizes the journey of food through the digestive system in 7 steps:
1) Food is chewed in the mouth by teeth and mixed with saliva before being swallowed down the esophagus.
2) The esophagus squeezes food into the stomach where it is further broken down by acids and muscular contractions.
3) Nutrients from the food are then absorbed through villi in the small intestine and enter the bloodstream, while waste continues through the large intestine.
4) In the large intestine, water is absorbed from the waste as it is compacted and pushed through the system before being expelled from the anus.
The organisation of living things
Living things are organized from cells to systems. Cells make up tissues, tissues make up organs, and organs work together in systems to carry out the basic life processes of interaction, reproduction and nutrition. There are differences between plant and animal cells, such as plant cells having a cell wall and vacuoles, but generally cells are the basic unit of structure and function for all living things.
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Tema 2 cuarto a
The document summarizes the key parts and functions of the digestive, excretory, circulatory, nervous, locomotor, and reproductive systems. It provides descriptions of processes like digestion, urine production, blood flow, neural signaling, embryonic development, and labeling diagrams of body systems. The question and answer format covers topics such as the differences between veins and arteries, oxygen transport through capillaries, sequencing events, and responses to stimuli.
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The document discusses the major body systems and how they work. It explains that during exercise, blood flows faster and we breathe more air. The nervous system controls the body using the brain, spinal cord and nerves. The five senses give information to the brain. The locomotor system is made up of bones, joints and muscles and helps us move. The circulatory system includes the heart, blood and blood vessels to transport nutrients. The respiratory system uses the lungs, windpipe and nostrils to breathe in oxygen and out carbon dioxide. The reproductive system allows humans to have babies using eggs, ovaries, testicles and sperm. In summary, the document outlines how the senses, nervous, circulatory, respiratory, locomotor and reproductive systems all
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The document discusses nutrition and how the body uses different nutrients from food. It explains that carbohydrates, fats, proteins, minerals, and vitamins are the five main types of nutrients that provide energy, build tissue, and support growth and health. The digestive system breaks down food and the excretory system eliminates waste. Maintaining a balanced diet, exercise, rest, hygiene, and using time wisely can help keep the body healthy.
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The document provides information about the major body systems through a series of questions and answers. It discusses the parts of the digestive system including the mouth, esophagus, stomach, small intestine, large intestine and anus. It also discusses the parts of the excretory system including the kidneys, ureters, bladder and urethra. Further sections address the circulatory, respiratory, nervous, locomotor and reproductive systems.
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Excretory
This document summarizes a student lab on dissecting a fetal pig to observe the excretory system. The lab group identified the kidneys, ureters, bladder, and urethra of the pig. They observed that urine is filtered from blood in the kidneys and travels through the ureters to the bladder for storage, then exits through the urethra. The large intestine was also identified as part of the excretory system, removing solid waste from the body. The student concluded that dissecting the fetal pig allowed them to accurately observe the key organs of the human excretory system.
Excretory
The document summarizes a student lab where they dissected a fetal pig to observe its excretory system. [1] The students located the kidneys, ureters, bladder, and urethra, which function to filter waste from the blood and remove it from the body. [2] However, the fetal pig's wastes are transferred via its umbilical cord to its mother rather than being excreted itself. [3] The student was able to confirm their hypothesis that the fetal pig's excretory system is similar to humans.
Digestive system
The document summarizes the key parts and functions of the digestive system. It begins with the mouth, then describes the esophagus, stomach, small intestine, large intestine, rectum and anus. The small intestine absorbs nutrients from food while the large intestine absorbs water and forms feces. Accessory organs that help with digestion include the liver, which produces bile, the pancreas which produces enzymes and insulin, and the gallbladder which stores bile.
Digestive and excretory systems
The digestive system breaks down food and extracts nutrients. Food passes through the mouth, esophagus, stomach, small intestine where nutrients are absorbed, and large intestine where water is removed before waste exits the body. The excretory system includes kidneys which remove waste from the blood to be stored in the bladder and later expelled as urine.
Science class
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Frog Dissection Lab Manual
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Tema 2 cuarto a
- 1. natural
- 2. Digestive system • Mouth • Food is broken up by the teeth and mixed with saliva by the tongue.
- 3. • Esophagus • Food goes down this tube to the stomach.
- 4. • Stomach • Gastric juices make the food into a thick liquid.
- 5. • Small intestine • There are lots of blood vessels. Nutrients pass into the blood.
- 6. • Large intestine • The waste passes through. Water goes out into the body and the waste becomes harder.
- 7. • Anus • The waste, called faeces, leaves the body.
- 8. Can you name the parts of the digestive system? Mouth Food is broken up by the teeth and mixed with saliva by the tongue. Small intestine There are lots of blood vessels. Nutrients pass into the blood. Anus The waste, called faeces, leaves the body. Esophagus Food goes down this tube to the stomach. Stomach Gastric juices make the food into a thick liquid. Large intestine The waste passes through. Water goes out into the body and the waste becomes harder.
- 10. • Kidneys • When the blood goes through here, excess water and waste products are dropped off and made into urine.
- 11. • Ureters • The urine goes down these tubes to the bladder.
- 12. • Bladder • The urine is stored here. When it is full it sends a message to our brain.
- 13. • Urethra • The urine leaves the body through this tube.
- 14. Can you label the parts of the digestive system? Kidneys When the blood goes through here, excess water and waste products are dropped off and made into urine. Ureters The urine goes down these tubes to the bladder. Urethra The urine leaves the body through this tube. Bladder The urine is stored here. When it is full it sends a message to our brain.
- 15. Circulatory system • Veins • They return the blood (with waste) back to the heart.
- 16. • Arteries • They carry blood (with oxygen) from the heart to the rest of our bodies.
- 17. heart
- 18. What’s the difference between veins and arteries? Veins They return the blood (with waste) back to the heart. Arteries They carry blood (with oxygen) from the heart to the rest of our bodies. What do you think the one-way valves are for? They prevent the blood from going in the opposite direction!
- 19. Do you know where does oxygen pass to and from the blood? At the alveoli, through the capillaries!
- 20. Can you order this sequence? 3 1 2
- 21. What happened to the cat? Its nervous and locomotor systems were in action! 1. He saw a dog. 2. Its eyes sent a message to its brain. 3. Its brain sent an order to its locomotor system. 4. It ran away!
- 22. From egg to baby 1 An egg is fertilised by a sperm.
- 23. From egg to baby 2 The egg divides again and again and becomes attached to the wall of the uterus.
- 24. From egg to baby 3 An embryo develops. At six weeks old it is about the size of a small seed. Nutrients and oxygen travel from the mother to the embryo along the umbilical cord.
- 25. From egg to baby 4 The embryo becomes a fetus at nine weeks. It’s about the size of an olive. It has arms and legs and it starts to have a face.
- 26. From egg to baby 5 At three months it has all its organs. It’s about the size of an avocado.
- 27. From egg to baby 6 At nine months it is ready to be born… is it a boy or a girl?
- 28. From egg to baby 7 The baby moves headfirst down the vagina and comes out into the world. It is born. The umbilical cord is cut and becomes the belly button and the baby breathes on its own and gets nutrients from its mother’s milk.
- 29. Can you label the female reproductive system? ovaries fallopian tubes uterus vagina
- 30. Can you label the male reproductive system? penis testicles urethra