Bodily Systems

In: Science

Submitted By dlj2007
Words 921
Pages 4
Everyday actions that humans are involved in can only be completed with the collaboration of different body systems. The nervous system sends the impulse to muscles and triggers senses to occur. The skeletal system provides support of the body and the muscular system enables movements to take place. The task of eating a hamburger in response to its smell involves the nervous system, skeletal system, and muscular system.
The smell of the hamburger triggers impulses of the nervous system. The afferent division of the peripheral nervous system, which involves sensory triggers as well as the central nervous system, are both activated. The chemical smell of the hamburger enters the nasal cavity. The chemical dissolves in the olfactory mucosa which stimulates the olfactory receptor cells. The olfactory receptor cells then transmit the impulse and enter the olfactory tract which is the pathway to the olfactory nerve. Once this chemical has entered the central nervous system, it is input into the mammillary body of the brain which acts as a memory bank. The sense of smell of the hamburger then triggers the urge to eat the hamburger. This simple action actually involves numerous body structures from the nervous system, skeletal system, and muscular system. To be able to reach for the burger, structures of the skeletal system are necessary. The scapula must support the arm and hand movement. The humerus, radius, and ulna must also support the arm in movement and allowing motion to occur. The joint that allows the ulna and humerus to move is the humeroulnar joint which is a hinge joint. Another joint that allows the shoulder to move is the glenohumeral joint which is a ball and socket joint. The bones themselves are only for support, however, the nerves and muscles together must aid in the completion of the task. There are specific muscles used to complete…...

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