Unit 02: Quiz 4 Flashcards
The dorsal column system and anterolateral system are associated with the
somatosensory system
Primary motor cortex (M1) sends motor signals to the _____ side of the body
contralateral
____ respond to edges and isolated points
Merkel’s discs
What are the two kinds of proprioceptors?
muscle spindles and golgi tendon organs
_____ detect stretching of the skin when we move fingers or limbs
Ruffini corpuscles
_____ are the pain receptors on free nerve endings that respond to painful stimuli
nociceptors
Which part of the ear contains the cochlea and semicircular canals?
inner ear
The sense of smell starts with olfactory receptor cells in the
olfactory epithelium
T/F: taste is the only sensory pathway that goes directly to the cortex
false
T/F: taste receptor cells have a lifespan of 1-2 years
false
All of the following are associated with the auditory pathway EXCEPT:
A) nucleus of the solitary tract
B) inferior colliculus
C) cochlear nucleus
D) superior olivary nucleus
A
Visual acuity is best at
the fovea
Light triggers _____ in photoreceptors, causing the release of less NT
a graded hyperpolarization
Which of the following retina cell types are the sensory neurons at the back of the retina?
photoreceptors
An _____ is excited by turning on light in the center of its receptive field
on-center bipolar cell
T/F: bipolar cells receive input from ganglion cells and output to photoreceptors
false
T/F: bipolar cells receive input from ganglion cells and output to photoreceptors
false
_____ in the skin respond to pain, itch, heat, and cold
free nerve endings
T/F: sensory transduction is the process of receptor cells converting sensory signals into electrical activity
true
Which of the following is caused by progressive damage to the basal ganglia?
A) sensorineural deafness
B) ataxia
C) parkinson’s disease
D) huntington’s disease
D
T/F: inner hair cells send information to the brain concerning the mechanical state of the basilar membrane
false
Axons from the olfactory receptor cells extend to
olfactory bulb
Which part of the ear modifies the character of sound frequencies?
external ear
Which of the following is the middle canal of the cochlea?
scala media
Some axons in the optic nerve cross the midline at the
optic chiasm
Some optic tract axons go to the superior colliculus, but most optic tract axons go to the superior colliculus, but most optic tract axons go to the
lateral geniculate nucleus (LGN) in the thalamus
