13. The Peripheral Nervous System

Receptors in the saccule and utricle provide sensations of (a) angular acceleration, (b) hearing, (c) vibration, (d) gravity and linear acceleration and deceleration.

Which type of sensory receptor is stimulated by touch, pressure, vibration, and stretch?

Which of the following have nonencapsulated (free) nerve endings?

Proprioceptors advise the brain of __________.

Simple receptors that are particularly abundant in epithelia and connective tissue tend to __________.

Which of the following receptors is stimulated by a substance known as capsaicin?

Which of the following receptors is considered a free dendritic ending?

Fast-adapting receptors are called __________.

The larger the receptive field, the (a) larger the stimulus needed to stimulate a sensory receptor, (b) fewer sensory receptors there are, (c) harder it is to locate the exact point of stimulation, (d) larger the area of the somatosensory cortex in the brain that deals with the area, (e) closer together the receptor cells.

_______receptors are normally inactive, but become active for a short time whenever there is a change in the modality that they monitor.

Match the receptor type in column B to the correct description in column A. Column A______(1) pain, itch, and temperature receptors______(2) contains intrafusal fibers and anulospiral and flower spray endings______(3) discriminative touch receptor in hairless skin (fingertips)______(4) contains receptor endings wrapped around thick collagen bundles______(5) rapidly adapting deep-pressure receptor______(6) slowly adapting deep-pressure receptor Column Ba. bulbous corpusclesb. tendon organc. muscle spindled. free nerve endingse. lamellar corpusclef. tactile corpuscle

The CNS interprets information entirely on the basis of the (a) number of action potentials that it receives, (b) kind of action potentials that it receives, (c) line over which sensory information arrives, (d) intensity of the sensory stimulus, (e) number of sensory receptors that are stimulated.

Identify six types of tactile receptors located in the skin, and describe their sensitivities.

What three types of mechanoreceptors respond to stretching, compression, twisting, or other distortions of their plasma membrane?