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
