Group 1: Sections 15.1—15.3

The depolarization that happens to a receptor to cause an action potential is called __________.

a generator potential

Judith is receiving messages in her brain from baroreceptors in her stomach, from chemoreceptors detecting PO2 levels in her blood, and from tactile receptors in her skin. All this information must be transmitted in what format in order to be detected by the central nervous system (CNS)?

action potentials

Which type of sensory receptor detects pressure changes in an organ?

baroreceptors

Which process inhibits nuclei along a sensory pathway and reduces the awareness of a stimulus?

central adaptation

Chemoreceptors in the medulla oblongata are sensitive to changes in pH and PCO2 in __________.

cerebrospinal fluid

What is the first thing that must happen for sensory information to be received by the central nervous system?

depolarization of a receptor

What is the correct sequence of events that must happen for conscious perception of a sensation?

depolarization of a receptor; action potential generation; propagation; CNS processing; perception

What category of sensory receptor provides information about the external environment?

extroceptors

What is the term for the branching end of a dendrite that is NOT protected by accessory structures?

free nerve ending

Which of the tactile receptors is stimulated by deep or heavy pressure?

lamellatted corpuscles

The receptors that provide information about the intensity and rate of change of a stimulus are called __________.

phasic receptors

What is the term expressing how a receptor can be stimulated by a certain stimulus but not any other stimuli?

receptor specificity

Which of the following receptors are stimulated when a stiff breeze blows across the skin of your arm and moves some of the arm hairs?

root hair plexuses

Which of the following is NOT considered to be a proprioceptor?

ruffini corpuscle

Specialized cells that monitor specific conditions in the body or in the external environment are called __________.

sensory receptors

Which type of receptor is NOT a mechanoreceptor?

thermoreceptors

Which type of sensory receptor detects temperature changes?

thermoreceptors

What type of receptor is always active?

tonic receptor

The special senses include all of the following EXCEPT one. Which one is NOT a special sense?

touch

Tactile receptors provide sensations of __________.

touch, pressure, and vibrations

What is the name for the process of converting a stimulus into an action potential?

transduction

Which of the following is NOT a general sense?

vision