Exam 13: The Peripheral Nervous System and Reflex Activity

Partial or total loss of smell is known as ________.

Potentially damaging stimuli that result in pain are selectively detected by ________.

Match the following: A) Macula B) Crista ampullaris C) Taste buds -Hair cells receptive to changes in static equilibrium are found in this structure.

Match the following: A) Lumbar plexus B) Brachial plexus C) Cervical plexus D) Sacral plexus -The phrenic nerve branches from this plexus.

A reflex that causes muscle relaxation and lengthening in response to muscle tension is called a ________.

Seventy percent of all sensory receptors are located in the ________.

Mr. Smith staggered home after a long night at the local pub. While attempting to navigate the stairs, he passed out cold and lay all night with his right armpit straddling the staircase banister. When he awoke the next morning, he had a severe headache, but what bothered him more was that he had no sensation in his right arm and hand. Explain what caused this symptom in his arm.

Match the following: A) Otoliths B) Vestibule C) Pharyngotympanic tube D) Tympanic membrane -Contains utricle and saccule.

Match the following: A) Vestibule B) Tympanic membrane C) Cochlear duct D) Spiral organ (of Corti) -The receptor organ for hearing.

Taste is solely a response to chemicals dissolved in ________.

Match the following: A) Precommand level B) Segmental level C) Projection level -Central pattern generators.

The meningeal branch of a spinal nerve actually reenters the vertebral canal to innervate the meninges and blood vessels.

Match the following: A) Lumbar plexus B) Brachial plexus C) Cervical plexus D) Sacral plexus -A fall or improper administration of an injection to the buttocks may injure a nerve of this plexus.

The fluid contained within the membranous labyrinth is called perilymph.

How is a receptor potential similar to an excitatory postsynaptic potential (EPSP) generated at a synapse?