WGU C107 Module 18 The Peripheral Nervous System 100% correct answers

WGU C107 Module 18 The Peripheral Nervous System 100% correct answersWhat causes contralateral motor control? Decussation - Nerves crossing over, also called decussation, causes the contralateral or opposite sidedness of motor control. Which best defines cranial nerves? Peripheral nerves that emerge from the brain. - These nerves come directly from the brain and regulate functions in the head. Match the following cranial nerve with its role. Oculomotor nerve: Movement of the eyes and dilation of pupils - Oculo refers to the eye and motor refers to movement. Match the following cranial nerve with its role. Vestibulococlear nerve: Hearing and equilibrium. - Coclear refers to hearing and vestibular refers to equilibrium. Match the following cranial nerve with its role. Vagus nerve: Parasympathetic nerve for digestion and swallowing. Match the following cranial nerve with its role. Hypoglossal nerve: Moving the tongue. - Glossa refers to the tongue. Within the spinal cord, what is another name for the large bundles of nerves in columns? Funiculi What is another name for the subdivision of columns called tracts? Fasciculi Information within the spinal cord travels up to and down from the brain along what structure? Column Information from the spinal cord travels out to and back from peripheral nerves along what structures? Root - Roots travel away from the direction of the spinal column. Which best describes a ganglion? A bulge of nerve bodies in the dorsal root. Which best describes a ramus? A branch of peripheral nerves. Which best describes a plexus? A network of bundled nerves outside of the spinal cord. Which best describes a root? a collection of nerves leaving a horn. Is breathing controlled by the somatic or autonomic nervous system? Both - We can speed up our breathing or hold our breath, but we are also able to breathe when we don't consciously think about it. Is pupil dilation controlled by the somatic or autonomic nervous system? Autonomic - Pupil dilation is not under voluntary control, and it can occur with changes in light or emotional state. Is digestion controlled by the somatic or autonomic nervous system? Autonomic - Although we can control when and what we eat, the act of digestion is outside of our voluntary control. Is shrugging your shoulders controlled by the somatic or autonomic nervous system? Somatic - The act of shrugging shoulders, even if it is "second nature" is a voluntary function. Which pathway of the autonomic nervous system is triggered by fear or anxiety? Sympathetic - The sympathetic is the "fight or flight" state of the autonomic nervous system. Which pathway of the autonomic nervous system is active during normal body functions? Parasympathetic - The parasympathetic is the resting state of the autonomic nervous system.