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Bone Anatomy pg 142
Question | Answer |
---|---|
CONDYLE | Rounded process that articulates with another bone |
Crest | Narrow ridgelike projection |
Epicondyle | Projection situated above a condyle |
Facet | Small nearly flat surface |
Fontanel | Soft spot in the skull where membranes cover the space between bones |
Foramen | An opening through the bone that is usually a passageway for blood vessels, nerves, or ligaments |
Fossa | Large pit of depression |
Fovea | tiny pit or depression |
Head | AN enlargement of the end of a bone |
Meatus | Tubelike passageway within a bone |
Process | Prominent projection on a bone |
Sinus | a cavity within a bone |
Spine | a thornlike projection |
Suture | interlocking line of union between bones |
Trochanter | A large process |
Tubercle | a small, knoblike process |
Tuberosity | a knoblike process usually larger than a tubercle |
peristalsis | rythmic waves of muscle contraction in walls of certain tubular organs |
prime mover | muscle responsible for particular type of movement |
synergist | assists prime mover |
antagonist | opposes the prime mover |
aponueroses | sheet of connective tissue which connects muscles |
tendon | cordlike mass of white fibrous tissue that connects a muscle to a bone |
troponin/tropomuosin | proteins that are part of actin filaments |
acetylcholine | nuerotransmitter that secretes at axon ends of transmits nerve messages across synapses |
hemoglobin | pigment of red blood cell that transports oxygen |
sarcomere | individual contractile units of a myrofibril |
z-lines | ends of the sarcomere |
I-band | actin |
A-band | where actin and myosin overlap |
H-zone | myosin |
M-line | protein that anchors the myosin in place within the sarcomere |
actin | thin protein/sliding filament |
myosin | thick protein/does not move |
cross bridges | branch that extends off the myosin and latches on to the actin to pull |
muscle origin | where a muscle begins, bone does not move |
muscle insertion | muscle ends, bone moves, on the opposite side of the joint |