A. Identify one of the movements outlined in the introduction. B. Analyze (suggested length of 1–2 pages) the functions and interactions of the structures of the skeletal, muscular, and nervous systems involved in the movement you chose in part A.
The scent of the hamburger enters the nostril. Upon entry, the odor of hamburger encounters the olfactory cilia, located in the supporting olfactory epithelium. The cilia pass along the impulse of the odor thru the olfactory cell, then further onto the axon bundle, before passing through the cribriform plate. Upon leaving that boney structure, the signal hops a ride on the olfactory bulb. The bulb in turn feeds impulses on to the olfactory nerve. This nerve enters the brain and will cause the subject to understand the odor to be hamburger, of which he wants to eat.
The brain then makes the decision to move forward with eating the hamburger. The brain must tell the hand to reach out and grab the burger to bring it to the mouth. It does so by sending an impulse down the spinal nerve until it branches off on to the arm nerves, which include the radial, ulnar, and median nerve. These three nerves in conjunction will allow control of the muscles of the arm and hand. The flexor carpi and extensor carpi ulnaris both control the flexing or extending of the wrist. They’ll be used in addition to extensor digitorum to grab hold of the hamburger. Once held, the deltoids, triceps, biceps, and trapezius muscles will all work in tandem to bring the burger up to the orbicularis oris, or the mouth muscles.
The bones of the wrist joint, along with the shoulder bring the hamburger up to the mouth to begin to take a bite. The jaw begins to masticate, letting the cilia within the tongue confirm with the nasal cilia that the food is indeed a hamburger and that the taste is