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Module 11

Apologia General Science Module 11

axial skeleton the portion of the skeleton that supports and protects the head, neck, and trunk
appendicular skeleton the portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it
exoskeleton a body covering, typically made of chitin, that provides support and protection
symbiosis a close relationship between tow or more species where at least one benefits
bone marrow a substance inside your bones that actually produces the cells in your body
smooth muscles these control the movements necessary for your body's internal organs and blood vessels to function
cardiac muscle found only in heart, this muscle controls how the blood is pumped throughout your body
bone matrix bones consist of cells surrounded by a substance made up of collagen and minerals
collagen flexible, thread-like substance that belongs to a class of chemicals called proteins
medullary cavity contains bone marrow and blood vessels
endoskeleton sum total of all bones in the body
vertebral column the most important part of the endoskeleton, often called the backbone
voluntary muscles an important feature of skeletal muscles; you can control your muscles by thinking about it.
epidermis outer layer of skin
dermis inner layer of skin
organism that breathes with its skin amphibian
Created by: holcomb