Human brain by Sohan
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The human body has three vital functions: nutrition, interaction, and reproduction. The interaction function involves stimuli, sensation, processing information in the brain, and responses. There are five senses - smell, taste, touch, sight, and hearing - that detect external and internal stimuli through sensory organs and nerves connected to the central nervous system and brain. The brain then coordinates voluntary or involuntary responses through the nervous and musculoskeletal systems.
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The vertebrate brain is the main part of the central nervous system. The brain and the spinal cord make up the central nervous system,
In most of the vertebrates the brain is at the front, in the head. It is protected by the skull and close to the main sense organs.
Brains are extremely complex and the part of human and animal body. The brain controls the other organs of the body, either by activating muscles or by causing secretion of chemicals such as hormones and neurotransmitters.
Muscular action allows rapid and coordinated responses to changes in the environment.
The brain of an adult human weights about 1300–1400 grams .
In vertebrates, the spinal cord by itself can cause reflex responses as well as simple movement such as swimming or walking. However, sophisticated control of behaviour requires a centralized brain.
The structure of all vertebrate brains is basically the same.
At the same time, during the course of evolution, the vertebrate brain has undergone changes, and become more effective.
In so-called 'lower' animals, most or all of the brain structure is inherited, and therefore their behaviour is mostly instinctive.
In mammals, and especially in man, the brain is developed further during life by learning. This has the benefit of helping them fit better into their environment. The capacity to learn is seen best in the cerebral cortex.
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The brain and nervous system is essentially a system which makes connections. It has input from sense organs and output to muscles. It is connected in several ways with the endocrine system, which makes hormones, and the digestive system and sex system. Hormones work slowly, so those changes are gradual.
The brain is a kind of department store. It has, all inter-connected, departments which do different things. They all help each other gather senses.
Much of what the body does is not conscious. Basically, much of the body runs on automatic (breathing, heart beat, hungry, hair growth) adjusted by the autonomic nervous system. The brain, too, does much of its work without a person noticing it. The unconscious mind refers to the brain activities which are hardly ever noticed.
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The document discusses the musculoskeletal and nervous systems. It describes how the skeleton and muscles work together through joints to enable movement. The skeletal system includes bones and cartilage, while the muscular system contains muscles, tendons, and ligaments. The nervous system coordinates internal organs and voluntary movement through the central and peripheral nervous systems. The central nervous system contains the brain and spinal cord, while the peripheral nervous system transmits signals through nerves.
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The document discusses the three vital functions of living things - nutrition, interaction, and reproduction. It focuses on the human body and nutrition, describing the four systems involved - the digestive system, respiratory system, circulatory system, and excretory system. It also lists some health habits and then discusses the body's senses and how stimuli are received, processed, and responded to, with the main senses being smell, taste, touch, sight, and hearing.
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The document discusses the musculoskeletal system, which controls the entire body and is made up of muscles that can stretch and contract, bones that protect internal organs, and ligaments and tendons that connect bones to each other and muscles to bones respectively. Maintaining a balanced diet, exercising, having good posture, spending time with friends, and keeping clean are all important ways to take care of one's musculoskeletal system.
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The brain controls the entire body and has five main parts: the cerebrum, cerebellum, brain stem, pituitary gland, and hypothalamus. Neurons are the basic nervous cells that form nerves and allow the brain to communicate with the rest of the body. To keep the nervous system healthy, a person should eat nutritious foods containing potassium and calcium, exercise, wear a helmet during sports, avoid drugs and alcohol, and engage their brain through activities like puzzles and reading.
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The document discusses the functions of the human body and focuses on interaction. It explains that our senses allow us to perceive the world and that the brain processes this sensory information. The brain controls both involuntary functions like breathing as well as voluntary actions and thinking. It also controls our emotions and stores memories. The document then discusses the nervous system in more detail, explaining that it sends messages from the brain to different parts of the body to allow responses. It notes that the nervous system interacts with every other system in the body.
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The document summarizes the parasympathetic nervous system. It is the involuntary nervous system that slows the heart rate, increases intestinal and glandular activity, and relaxes sphincter muscles. Together with the sympathetic nervous system, it constitutes the autonomic nervous system. The parasympathetic system works to return the body to homeostasis after experiencing stress or pain by slowing the heart rate and relaxing muscles. It is consistently active at a low level.
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The central nervous system is composed of the brain and spinal cord. The spinal cord contains sensory neurons, motor neurons, and interneurons that enable spinal reflexes, allowing the body to quickly remove itself from danger. The peripheral nervous system includes the autonomic nervous system, which regulates internal organs, and the somatic nervous system, which connects the brain to skeletal muscles. Neurons transmit electrochemical signals via neurotransmitters released at synapses between neurons.
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4. The third unit outlines the skeletal system including important bones, joints, and muscles. It
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This document provides an overview of the biological bases of behavior, including the structure and function of the nervous system and endocrine system. It describes how the nervous system is composed of the central and peripheral nervous systems. The peripheral nervous system includes the somatic and autonomic nervous systems. It also outlines the basic parts and functions of neurons, neurotransmitters, and the pathway of a neural impulse. Additionally, it summarizes the major structures of the brain and their functions, and identifies the key endocrine glands and hormones.
N E R V O U S S Y S T E M
The nervous system has three main components - the brain, nerves, and spinal cord. The brain is the control center located in the cranial cavity and is made up of the cerebrum, brainstem, and cerebellum. The cerebrum is divided into four lobes and is responsible for functions like memory, thinking, language, and movement. The brainstem consists of the midbrain, pons, and medulla oblongata and controls vital functions. The cerebellum, located in the back of the brain, coordinates movement and balance. The nervous system allows communication and coordination throughout the body to control all functions.
NERVOUS SYSTEM
The nervous system has three main components - the brain, nerves, and spinal cord. The brain is the control center located in the cranial cavity and is made up of the cerebrum, brainstem, and cerebellum. The cerebrum is divided into four lobes and is responsible for functions like memory, thinking, language, and movement. The brainstem consists of the midbrain, pons, and medulla oblongata and controls vital functions. The cerebellum, located in the back of the brain, coordinates movement and balance. The nervous system allows communication and coordination throughout the body to control all functions.
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Human brain by Sohan
- 1. HUMAN BRAIN PRESENTED BY: MD.SOHAN MIA ID: TE 1707079
- 2. The Society for Neuroscience Our Brain has “The most complex living structure on the universe ”
- 3. The Brain Weights 1300-1400g Made up of about 100 billion neurons Makes us who we are
- 4. Neurons
- 5. Parts of Brain Human Brain is divided into 3 main parts. The 3 main parts of Human Brain are : 1. Forebrain or Prosencephalon 2. Midbrain or Mesencephalon 3. Hindbrain or Rhombencephalon
- 6. Main parts of the Brain
- 7. What ?
- 8. Structure of Human Brain
- 9. Functions of the Brain 1. Thinking or cognition 2. Perception or Sensing 3. Emotion or Feeling 4. Behaviour 5. Physical or Somatic 6. Signaling
- 10. The Brain Produces Electrical signals With chemical reactions . Let the part of the body communicate. Nerves send these signals throughout the body.
- 11. Eat healthy food for brain
- 12. Thank you