The document discusses comparative anatomy and how body systems have evolved across different animal phyla. It provides examples of the digestive, respiratory, circulatory, excretory, nervous, and skeletal systems in cnidarians, annelids, arthropods, and mammals. Key evolutionary adaptations include the development of internal organs, closed circulatory systems, and increasingly complex nervous systems including the brain.
All birds are in the Animalia Kingdom, Phylum of Chordata (with a backbone), and Class Aves (birds). At the Order level, the birds begin to diverge. For instance, the pelicans are in the Pelecaniformes Order while the nuthatches are in the Passeriformes Order.
All birds are in the Animalia Kingdom, Phylum of Chordata (with a backbone), and Class Aves (birds). At the Order level, the birds begin to diverge. For instance, the pelicans are in the Pelecaniformes Order while the nuthatches are in the Passeriformes Order.
ppt on flight adaptation
a well prepared ppt on the topic of bird's flight adaptation.
a good collaboration of knowledge on this topic , hope all of you like this
plz like and share if you like it
Why do animals need to breathe?
Breathing is important to organisms because cells require energy (oxygen) to move, reproduce and function. Breath also expels carbon dioxide, which is a by-product of cellular processes within the bodies of animals.
Respiration is the process of releasing energy from food and this takes place inside the cells of the body.
The process of respiration involves taking in oxygen (of air) into cells, using it for releasing energy by burning food, and then eliminating the waste products (carbon dioxide and water) from the body.
Respiration is essential for life because it provides energy for carrying out all the life processes which are necessary to keep the organisms alive.
The energy produced during respiration is stored in the form of ATP (Adenosine Tri- Phosphate) molecules in the cells of the body and used by the organism as when required.
KEY POINTS
Life started in an anaerobic environment in the so called ‘primodial broth’ (a mixture of organic molecules.
Subsequently, oxygen strangely enough became an crucial factor for aerobic metabolism especially in the higher life forms.
The rise of an oxygenic environment was an important event in the diversification of life.
It evoked a dramatic shift from inefficient to sophisticated oxygen dependent oxidizing ecosystems.
Anaerobic fermentation, the metabolic process that prevailed for the first about 2 billion years of the evolution of life, was a very inefficient way of extracting energy from organic molecules. Ex: A molecule of glucose, e.g., produces only two molecules of ATP (≈ 15 kCal) compared with 36 ATP molecules (≈ 263 kCal) in oxygenic respiration.
Aerobic metabolism must have developed at a critical point when the partial pressure of oxygen rose from an initial level to one adequately high to drive it passively across the cell membrane.
Respiration is a complex and highly integrated biomechanical, physiological, and behavioral processes.
The transfer of O2 occurs through a flow of tissue barriers and compartments by diffusion down a partial pressure gradient, which drops to about zero at the mitochondrial level.
Acquisition of molecular oxygen (O2) from the external fluid media (water and air) and the discharge of carbon dioxide (CO2) into the same milieu is the primary role of respiration.
The respiratory system is a biological system consisting of specific organs and structures.
Through the process of evolution, few species of reptiles were transformed into modern birds.
This ppt describes about the similarities between reptiles and modern birds.
ORIGIN OF CHORDATES
Animal kingdom is basically divided into two sub kingdoms:
Non-chordata- including animals without notochord.
Chordata- This comprising animals having notochord or chorda dorsalis.
Chordates were evolved sometime 500 million years ago during Cambrian period (invertebrates were also began to evolve in this period) .
Chamberlain (1900) pointed out that all modern chordates possess glomerular kidneys that are designed to remove excess water from body.
It is believed that Chordates have originated from invertebrates.
It is difficult to determine from which invertebrate group the chordates were developed.
Chordate ancestors were soft bodied animals. Hence they were not preserved as Fossils.
However, early fossils of chordates have all been recovered from marine sediments and even modern protochordates are all marine forms.
Also glomerular kidneys are also found in some marine forms such as myxinoids and sharks. That makes the marine origin of chordates more believable.
Chordates evolved from some deuterostome ancestor (echinoderms, hemichordates, pogonophorans etc.) as they have similarities in embryonic development, type of coelom and larval stages.
Many theories infers origin of chordates, hemichordates and echinoderms from a common ancestor.
ppt on flight adaptation
a well prepared ppt on the topic of bird's flight adaptation.
a good collaboration of knowledge on this topic , hope all of you like this
plz like and share if you like it
Why do animals need to breathe?
Breathing is important to organisms because cells require energy (oxygen) to move, reproduce and function. Breath also expels carbon dioxide, which is a by-product of cellular processes within the bodies of animals.
Respiration is the process of releasing energy from food and this takes place inside the cells of the body.
The process of respiration involves taking in oxygen (of air) into cells, using it for releasing energy by burning food, and then eliminating the waste products (carbon dioxide and water) from the body.
Respiration is essential for life because it provides energy for carrying out all the life processes which are necessary to keep the organisms alive.
The energy produced during respiration is stored in the form of ATP (Adenosine Tri- Phosphate) molecules in the cells of the body and used by the organism as when required.
KEY POINTS
Life started in an anaerobic environment in the so called ‘primodial broth’ (a mixture of organic molecules.
Subsequently, oxygen strangely enough became an crucial factor for aerobic metabolism especially in the higher life forms.
The rise of an oxygenic environment was an important event in the diversification of life.
It evoked a dramatic shift from inefficient to sophisticated oxygen dependent oxidizing ecosystems.
Anaerobic fermentation, the metabolic process that prevailed for the first about 2 billion years of the evolution of life, was a very inefficient way of extracting energy from organic molecules. Ex: A molecule of glucose, e.g., produces only two molecules of ATP (≈ 15 kCal) compared with 36 ATP molecules (≈ 263 kCal) in oxygenic respiration.
Aerobic metabolism must have developed at a critical point when the partial pressure of oxygen rose from an initial level to one adequately high to drive it passively across the cell membrane.
Respiration is a complex and highly integrated biomechanical, physiological, and behavioral processes.
The transfer of O2 occurs through a flow of tissue barriers and compartments by diffusion down a partial pressure gradient, which drops to about zero at the mitochondrial level.
Acquisition of molecular oxygen (O2) from the external fluid media (water and air) and the discharge of carbon dioxide (CO2) into the same milieu is the primary role of respiration.
The respiratory system is a biological system consisting of specific organs and structures.
Through the process of evolution, few species of reptiles were transformed into modern birds.
This ppt describes about the similarities between reptiles and modern birds.
ORIGIN OF CHORDATES
Animal kingdom is basically divided into two sub kingdoms:
Non-chordata- including animals without notochord.
Chordata- This comprising animals having notochord or chorda dorsalis.
Chordates were evolved sometime 500 million years ago during Cambrian period (invertebrates were also began to evolve in this period) .
Chamberlain (1900) pointed out that all modern chordates possess glomerular kidneys that are designed to remove excess water from body.
It is believed that Chordates have originated from invertebrates.
It is difficult to determine from which invertebrate group the chordates were developed.
Chordate ancestors were soft bodied animals. Hence they were not preserved as Fossils.
However, early fossils of chordates have all been recovered from marine sediments and even modern protochordates are all marine forms.
Also glomerular kidneys are also found in some marine forms such as myxinoids and sharks. That makes the marine origin of chordates more believable.
Chordates evolved from some deuterostome ancestor (echinoderms, hemichordates, pogonophorans etc.) as they have similarities in embryonic development, type of coelom and larval stages.
Many theories infers origin of chordates, hemichordates and echinoderms from a common ancestor.
Chapter 17 breathing & exchange of gases (repaired) (2)Kailash Vilegave
UNIT – V : HUMAN PHYSIOLOGYCHAPTER 17 : BREATHING AND EXCHANGE OF GASES
Respiratory organs in animals (recall only); Respiratory system in humans; Mechanism of breathingand its regulation in humans-Exchange of gases, transport of gases and regulation of respiration Respiratory volumes; Disorders related to respiration-Asthma, Emphysema, Occupational respiratory disorders.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Delivering Micro-Credentials in Technical and Vocational Education and TrainingAG2 Design
Explore how micro-credentials are transforming Technical and Vocational Education and Training (TVET) with this comprehensive slide deck. Discover what micro-credentials are, their importance in TVET, the advantages they offer, and the insights from industry experts. Additionally, learn about the top software applications available for creating and managing micro-credentials. This presentation also includes valuable resources and a discussion on the future of these specialised certifications.
For more detailed information on delivering micro-credentials in TVET, visit this https://tvettrainer.com/delivering-micro-credentials-in-tvet/
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
2. COMPARATIVE ANATOMY
3 KEY CONCEPTS:
DIFFUSION: the movement of
substances from an area of
greater concentration to an
area of less concentration
STRUCTURE &
FUNCTION: the
shape (structure) of
something affects the
work (function) that it
can perform
SURFACE AREA: increased
surface area increases the
amount of activity that can
take place
3. STRUCTURE AND FUNCTION
What does the
structure of an
object have to do
with its function?
The work (function)
that an object can
perform is
controlled by its
shape (structure).
VELCRO
COCKLEBUR
4. DIFFUSION
What body systems use diffusion in order
to function properly?
Some of the body systems that use diffusion to
perform their functions are digestive (villi),
respiratory (alveoli), excretory (kidney) and
circulatory (capillaries).
5. SURFACE AREA
Explain the
relationship between
the villi and the terry
cloth.
The villi and the terry
cloth both have
projections to
increase their surface
area.
VILLI
TERRY CLOTH
6. SURFACE AREA, DIFFUSION,
STRUCTURE & FUNCTION
How do all
three of
these
concepts
help the villi
function?
The villi are structures (projections) that increase
the surface area of the small intestine so they
can perform their function of absorption by
diffusion.
7. Body System Functions
DIGESTIVE Convert food into smaller molecules
RESPIRATORY Exchange of oxygen and carbon
dioxide
CIRCULATORY Move blood through the body
EXCRETORY Removes wastes from the blood
NERVOUS Responds to internal and external
stimuli
SKELETAL Supports and protects the body
As you discuss each system and the variations in nature, these are the three concepts you will want to emphasis. Let the students tell you the significance of each of these.
Have the students point out that the specific structure of an object determines its function. Here you can compare the structure of Velcro with the structure of a cocklebur. George de Mestral was hiking when he noticed cockleburs sticking to his clothes and his dog’s fur. He went home and looked at a burr under a microscope. He noticed tiny hooks on the burs that grabbed onto the threads of his pants. From this he invented Velcro.
Have the students identify systems they think function using diffusion. Let them tell you how this would work in each system. The systems you would want to stress are: digestive, circulatory, respiratory, and excretory.
Have the students explain the relationship between villi and the terry cloth. In which systems would surface area be so important. The systems would be digestive, respiratory, excretory, circulatory, integumentary and nervous.
Let the students combine all the concepts of surface area, diffusion and structure and function to discuss how the villi function. The structure of the villi gives a lot of surface area so the function of diffusion will have lots of surface area on which to work.
The students can now refer to the chart on comparative anatomy. You will want to point out the differences in each system. We do not want the students to know the phyla or the specific parts of each digestive system. We want them to see the concepts of diffusion, surface area and structure and function with each type of digestive system. The Cnidarians only have one digestive opening and a large gastrovascular cavity. They rely on diffusion in that cavity to take nutrients to their cells. The annelids have the long tube with two digestive openings that allow more surface area for diffusion. The Arthropod’s long tube gives more surface area. The Arthropods also have two digestive openings. Finally, the mammal intestine has many folds. Internally there are the villi that add even more surface area for diffusion. Mammals also have two digestive openings. Point out that the structures are suited for the function.
The students can now refer to the chart on comparative anatomy. You will want to point out the differences in each system. We do not want the students to know the phyla or the specific parts of each digestive system. We want them to see the concepts of diffusion, surface area and structure and function with each type of digestive system. The Cnidarians only have one digestive opening and a large gastrovascular cavity. They rely on diffusion in that cavity to take nutrients to their cells. The annelids have the long tube with two digestive openings that allow more surface area for diffusion. The Arthropod’s long tube gives more surface area. The Arthropods also have two digestive openings. Finally, the mammal intestine has many folds. Internally there are the villi that add even more surface area for diffusion. Mammals also have two digestive openings. Point out that the structures are suited for the function.
The students can now refer to the chart on comparative anatomy. You will want to point out the differences in each system. We do not want the students to know the phyla or the specific parts of each digestive system. We want them to see the concepts of diffusion, surface area and structure and function with each type of digestive system. The Cnidarians only have one digestive opening and a large gastrovascular cavity. They rely on diffusion in that cavity to take nutrients to their cells. The annelids have the long tube with two digestive openings that allow more surface area for diffusion. The Arthropod’s long tube gives more surface area. The Arthropods also have two digestive openings. Finally, the mammal intestine has many folds. Internally there are the villi that add even more surface area for diffusion. Mammals also have two digestive openings. Point out that the structures are suited for the function.
The students can now refer to the chart on comparative anatomy. You will want to point out the differences in each system. We do not want the students to know the phyla or the specific parts of each digestive system. We want them to see the concepts of diffusion, surface area and structure and function with each type of digestive system. The Cnidarians only have one digestive opening and a large gastrovascular cavity. They rely on diffusion in that cavity to take nutrients to their cells. The annelids have the long tube with two digestive openings that allow more surface area for diffusion. The Arthropod’s long tube gives more surface area. The Arthropods also have two digestive openings. Finally, the mammal intestine has many folds. Internally there are the villi that add even more surface area for diffusion. Mammals also have two digestive openings. Point out that the structures are suited for the function.
Point out that Cnidarians get oxygen by diffusion from the water. Annelids get oxygen by diffusion through the skin. Book lungs have layers of respiratory tissue stacked like the pages of a book. This gives more surface area so diffusion can occur. Gills are featherlike organs that specialize in the exchange of gases from water. The structure gives increased surface area for the diffusion to occur. The alveoli in the mammal lungs are tiny air sacs that provide increased surface area for gas exchange. The surface area of the 300 million alveoli (each lung has 150 million alveoli) in the human lungs would cover 70 square meters. That’s about the size of an average classroom measuring 25 feet by 25 feet.
Point out that Cnidarians get oxygen by diffusion from the water. Annelids get oxygen by diffusion through the skin. Book lungs have layers of respiratory tissue stacked like the pages of a book. This gives more surface area so diffusion can occur. Gills are featherlike organs that specialize in the exchange of gases from water. The structure gives increased surface area for the diffusion to occur. The alveoli in the mammal lungs are tiny air sacs that provide increased surface area for gas exchange. The surface area of the 300 million alveoli (each lung has 150 million alveoli) in the human lungs would cover 70 square meters. That’s about the size of an average classroom measuring 25 feet by 25 feet.
Point out that Cnidarians get oxygen by diffusion from the water. Annelids get oxygen by diffusion through the skin. Book lungs have layers of respiratory tissue stacked like the pages of a book. This gives more surface area so diffusion can occur. Gills are featherlike organs that specialize in the exchange of gases from water. The structure gives increased surface area for the diffusion to occur. The alveoli in the mammal lungs are tiny air sacs that provide increased surface area for gas exchange. The surface area of the 300 million alveoli (each lung has 150 million alveoli) in the human lungs would cover 70 square meters. That’s about the size of an average classroom measuring 25 feet by 25 feet.
Point out that Cnidarians get oxygen by diffusion from the water. Annelids get oxygen by diffusion through the skin. Book lungs have layers of respiratory tissue stacked like the pages of a book. This gives more surface area so diffusion can occur. Gills are featherlike organs that specialize in the exchange of gases from water. The structure gives increased surface area for the diffusion to occur. The alveoli in the mammal lungs are tiny air sacs that provide increased surface area for gas exchange. The surface area of the 300 million alveoli (each lung has 150 million alveoli) in the human lungs would cover 70 square meters. That’s about the size of an average classroom measuring 25 feet by 25 feet.
Cnidarians have no circulatory system or blood. Nutrients diffuse from cell to cell. Annelids have a closed circulatory system and 5 pair of aortic arches that pumps the blood. Their blood vessel system is also primitive. Explain what a closed system is. Arthropods have an open circulatory system where the blood is pumped by a heart into the body cavity. The blood surrounds the organs so that diffusion can occur. The mammal system is closed and has a muscular heart that pumps blood through a complex system of vessels. All of these systems rely on diffusion of substances from the blood into the cells. The more blood vessels there are, the more surface area there is for diffusion to occur.
Cnidarians have no circulatory system or blood. Nutrients diffuse from cell to cell. Annelids have a closed circulatory system and 5 pair of aortic arches that pumps the blood. Their blood vessel system is also primitive. Explain what a closed system is. Arthropods have an open circulatory system where the blood is pumped by a heart into the body cavity. The blood surrounds the organs so that diffusion can occur. The mammal system is closed and has a muscular heart that pumps blood through a complex system of vessels. All of these systems rely on diffusion of substances from the blood into the cells. The more blood vessels there are, the more surface area there is for diffusion to occur.
Cnidarians have no circulatory system or blood. Nutrients diffuse from cell to cell. Annelids have a closed circulatory system and 5 pair of aortic arches that pumps the blood. Their blood vessel system is also primitive. Explain what a closed system is. Arthropods have an open circulatory system where the blood is pumped by a heart into the body cavity. The blood surrounds the organs so that diffusion can occur. The mammal system is closed and has a muscular heart that pumps blood through a complex system of vessels. All of these systems rely on diffusion of substances from the blood into the cells. The more blood vessels there are, the more surface area there is for diffusion to occur.
Cnidarians have no circulatory system or blood. Nutrients diffuse from cell to cell. Annelids have a closed circulatory system and 5 pair of aortic arches that pumps the blood. Their blood vessel system is also primitive. Explain what a closed system is. Arthropods have an open circulatory system where the blood is pumped by a heart into the body cavity. The blood surrounds the organs so that diffusion can occur. The mammal system is closed and has a muscular heart that pumps blood through a complex system of vessels. All of these systems rely on diffusion of substances from the blood into the cells. The more blood vessels there are, the more surface area there is for diffusion to occur.
Cnidarian excrete their waste from their cells by diffusion into the surrounding water. Annelids have developed a series of tubes that filter liquid waste from the coelom (body cavity) then release the waste into the environment. Terrestrial arthropods have a saclike organ that extracts waste from blood.
Mammals have a complex tube system that extracts waste from blood. All of these systems rely on diffusion of the waste. Each one has developed a specific structure to accomplish this. The mammal excretory system has developed in such a way as to increase the surface area so the diffusion process is more efficient.
Cnidarian excrete their waste from their cells by diffusion into the surrounding water. Annelids have developed a series of tubes that filter liquid waste from the coelom (body cavity) then release the waste into the environment. Terrestrial arthropods have a saclike organ that extracts waste from blood.
Mammals have a complex tube system that extracts waste from blood. All of these systems rely on diffusion of the waste. Each one has developed a specific structure to accomplish this. The mammal excretory system has developed in such a way as to increase the surface area so the diffusion process is more efficient.
Cnidarian excrete their waste from their cells by diffusion into the surrounding water. Annelids have developed a series of tubes that filter liquid waste from the coelom (body cavity) then release the waste into the environment. Terrestrial arthropods have a saclike organ that extracts waste from blood.
Mammals have a complex tube system that extracts waste from blood. All of these systems rely on diffusion of the waste. Each one has developed a specific structure to accomplish this. The mammal excretory system has developed in such a way as to increase the surface area so the diffusion process is more efficient.
Cnidarian excrete their waste from their cells by diffusion into the surrounding water. Annelids have developed a series of tubes that filter liquid waste from the coelom (body cavity) then release the waste into the environment. Terrestrial arthropods have a saclike organ that extracts waste from blood.
Mammals have a complex tube system that extracts waste from blood. All of these systems rely on diffusion of the waste. Each one has developed a specific structure to accomplish this. The mammal excretory system has developed in such a way as to increase the surface area so the diffusion process is more efficient.
The function of the nervous system is to detect stimuli from the environment. The Cnidarians have developed a nerve net that is a network of nerve cells. There is no brain. The annelids have developed a primitive brain with 2 nerve cords (a dorsal and ventral). Many have variations of sense organs. Arthropods have a brain and a ventral nerve cord. They have ganglia coming off of the nerve cord that send messages to their appendages. Most arthropods have well-developed sense organs. The mammal nervous system has a well- developed brain. The many folds in the brain give the brain more surface area. The nervous system is a complex system of neurons that detects stimuli from the environment and initiates a response.
The function of the nervous system is to detect stimuli from the environment. The Cnidarians have developed a nerve net that is a network of nerve cells. There is no brain. The annelids have developed a primitive brain with 2 nerve cords (a dorsal and ventral). Many have variations of sense organs. Arthropods have a brain and a ventral nerve cord. They have ganglia coming off of the nerve cord that send messages to their appendages. Most arthropods have well-developed sense organs. The mammal nervous system has a well- developed brain. The many folds in the brain give the brain more surface area. The nervous system is a complex system of neurons that detects stimuli from the environment and initiates a response.
The function of the nervous system is to detect stimuli from the environment. The Cnidarians have developed a nerve net that is a network of nerve cells. There is no brain. The annelids have developed a primitive brain with 2 nerve cords (a dorsal and ventral). Many have variations of sense organs. Arthropods have a brain and a ventral nerve cord. They have ganglia coming off of the nerve cord that send messages to their appendages. Most arthropods have well-developed sense organs. The mammal nervous system has a well- developed brain. The many folds in the brain give the brain more surface area. The nervous system is a complex system of neurons that detects stimuli from the environment and initiates a response.
The function of the nervous system is to detect stimuli from the environment. The Cnidarians have developed a nerve net that is a network of nerve cells. There is no brain. The annelids have developed a primitive brain with 2 nerve cords (a dorsal and ventral). Many have variations of sense organs. Arthropods have a brain and a ventral nerve cord. They have ganglia coming off of the nerve cord that send messages to their appendages. Most arthropods have well-developed sense organs. The mammal nervous system has a well- developed brain. The many folds in the brain give the brain more surface area. The nervous system is a complex system of neurons that detects stimuli from the environment and initiates a response.
Skeletons protect and support the body. An exoskeleton is an external skeleton that protects and supports the body. Many exoskeleton have a waxy covering that helps prevent the loss of water. An endoskeleton is an internal skeleton that supports the body, provides protection for internal organs, assists in movement, stores minerals, and provides the site for blood cell formation.
Skeletons protect and support the body. An exoskeleton is an external skeleton that protects and supports the body. Many exoskeleton have a waxy covering that helps prevent the loss of water. An endoskeleton is an internal skeleton that supports the body, provides protection for internal organs, assists in movement, stores minerals, and provides the site for blood cell formation.
Skeletons protect and support the body. An exoskeleton is an external skeleton that protects and supports the body. Many exoskeleton have a waxy covering that helps prevent the loss of water. An endoskeleton is an internal skeleton that supports the body, provides protection for internal organs, assists in movement, stores minerals, and provides the site for blood cell formation.
Skeletons protect and support the body. An exoskeleton is an external skeleton that protects and supports the body. Many exoskeleton have a waxy covering that helps prevent the loss of water. An endoskeleton is an internal skeleton that supports the body, provides protection for internal organs, assists in movement, stores minerals, and provides the site for blood cell formation.