| Nervous | integumentary | skeletal | muscular | immune |
|---|---|---|---|---|
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What is a neuron?
Neurons are information messengers
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What is the top layer of the skin called?
The epidermis.
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Name one bone in the skeletal system?
ribs, arms, legs, cranium, pelvis, humerus, femur, tibia, fibula, and more
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how does the muscular system help us with our everyday lives
It is responsible for the movement of the body which is an everyday thing
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What is the function of the nervous system?
growth and development
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What are the 3 layers of the skin?
The epidermis, Dermis,and Hypodermis.
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What are some functions of the skeletal system?
support, protection, movement, blood cell formation
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what happens when you move your body
muscles contract
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When does the nervous system begin to form ?
at 6 weeks it begins to form
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What is the structure of the dermal layer?
widely dispersed cells, highly vascular.
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What is a ligament?
a connective tissue that connects bone to bone
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when does the muscular system develop
it develops around the 4th week
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What is the main function of the immune system?
To defend the body against infection
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What happens if you break your spinal cord?
You would become paralyzed because neurons wont be able to go past the spinal cord.
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What is the purpose of the integumentary system?
to protect the muscles and organs while regulating the body tempatures.
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What are some things stored in the bone?
calcium, fat, phosporous
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when does the muscular system fully develop
Only at approximately 20 years of age are when the epiphyses and diaphysis fuse, indicating that skeletal growth is complete.
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What are some structures of the immune system?
immune cells, antibodies, chemicals
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When does the nervous system fully develop?
around the age of 25
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What happens to cells as they are pushed to the suface?
the farther cells move, the poorer their nutrient supply becomes and they die.
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what structures make up the skeletal system
Bones, joints, cartilage, and ligaments
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what is the muscular system composed of
it is composed of specialized cells called muscle fibers
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How does mucus participate in defending the body?
Mucus is the first line of defense in fighting infection.
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