ANAT-1005 Lecture 1: A&P final
23 Feb 2020
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Why: why is supplemental oxygen humidified before administration, where are the olfactory receptors responsible for the sense of smell located, pharynx divisions and function, pharynx connects to, the pharynx is like the hallway of a house. Rigger: calcium, actin, no atp (energy) to detach the myosin from the actin, threshold stimulus: the minimal level of stimulation required to cause a muscle fiber to contract. All-or-none principle: once stimulated a muscle fiber will contract completely: tendons, ligaments, origin (proximal) attachment to the bone that remains relatively stationary or fixed. Insertion (distal) point of attachment to the bone that moves when a muscle contracts when movement at the joint occurs. Prime mover muscle whose contraction is mainly responsible for producing a given. Synergist muscle whose contractions help the prime mover produce a given movement. The muscle changes length, and the insertion end moves closer to the point of origin: concentric- contractions shorten muscles, eccentric- contractions allow muscles to increase in length.
