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portion of the skeleton that attaches to the axial skeleton and has limbs attached to it
Name two differences between skeletal and smooth muscles.
smooth- smooth, unstriped, operate involuntarily (unconsciously by the brain) skeletal- rough, striped, operate voluntarily (with conscious thought)
What kind of muscle is the heart made of? Voluntary or Involuntary?
cardiac muscle, involuntary (thank goodness:)
What is keratinization?
Keratinization is a process that hardens living cells, used to make the outer layer of the epidermis as well as hair and nails. Keratinization kills cells
What are bones made of?
collagen and minerals, makes bones more flexible while minerals make bones hard and strong
What is the difference between compact and spongy bone?
compact packed together tightly, while spongy bone tissue has lots of space between its fibers
Support structure exists on the inside of an organism including bones, cartilage, ligaments, etc
Do muscles shorten or lengthen when contracted?
contraction- shortens muscles; relaxation- lengthens
What is the purpose of perspiration or "Sweat"?
Cools the body down and helps feed the beneficial bacteria and fungi that live on your skin
Are the cells on your outer layer of skin dead or alive?
Dead; therefore skin cells are constantly falling off
What do sebaceous glands produce?
oil that softens the skin and hair and makes it more difficult for certain bacteria to adhere to skin and hair
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