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34 Cards in this Set

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Hydrostatic skeleton
Made of water under high pressure. Elongates and contracts easily, not a good protective skeleton
Exoskeleton
Usually made of chitin, highly protective. No wide movements, molts and leaves itself vulnerable
Chitin
What exoskeletons are usually made of. Hard substance that covers and animal.
Calcium
One important mineral in you body. Necessary for muscle contraction, neuron communication, blood clotting, and for making bones stronger and denser.
Phosphorous
An important mineral. Needed for cell membranes, ATP, DNA, and RNA
Axial
Set of bones whose function is to protect vital organs (skull, ribs, spine, etc)
Appendicular
Set of bones whose function has to do with movement. Arms, legs, pelvis, etc.
Fontanel
The spaces between the skull, usually prevalent during infancy
Lateral
Sideways/horizontal
Anterior
Towards the front
Posterior
Towards the back
Superior
Bigger or higher
Osteocyte
The rings that are seen in bones. These are bone cells (osteoblats are young osteocytes/bone cells)
Articulation
To be able to move or bend. Having to do with joints in the body
Histology
The study of tissues
Osteon
Where new bone cells are made. Groups of rings
Trabecula
The little passages within spongy bone. They store red bone marrow
Tendon
Tissue that connects bone to muscle
Ligament
Tissue that connects bone to bone
Peristalsis
The form of muscle contraction that worms, intestines, etc. use. Head-to-tail waves of contraction to move themselves or something within the tissue.
Antagonistic
Muscles that produce opposite movements
Fascicle
Step below muscles. Group of muscle cells
Muscle Fiber
Below fascicles, muscles. These are the cells
Myofibrils
Below muscle fiber, fascicles, muscle. These are the tissues within the cells
Myofilaments
Below myofibrils, muscle fiber, fascicles, and muscle. These are actin and myosin, and aid with contraction
Actin
Provides a place for the myosin head to attach onto. A myofilament. Connected to the Z-line
Myosin
Myofilament. Not attached to the Z-line. Attaches to actin and pulls itself toward the center, therefore contracting muscle
ATP
Adenosine Triphosphate. Is an energy source for muscle. Interacts the myosin to attach the myosin heads to the actin
Mitochondrion
Body's ATP factory. Stores ATP for future use.
Z Line
Ending of the sarcomere. Provides a place for the actin to attach onto.
Sarcomere
The name for each group of the actin and myosin contained within two Z-lines
Myosin heads
The part of myosin that connects to the actin
Tropomyosin
Small bands that cover the places in actin where myosin can bind
Troponin
The locks that guard the tropomyosin. Only the calcium key can unlock these.