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Psych 305-Test 2

Terms in this set (40)

The brain recognizes action potentials from different sensory modalities as separate and distinct because...
action potentials from different sensory modalities are carried on different nerve tracts.
Which skin receptor type is especially sensitive to stretching of the skin?
Ruffini Corpuscle
_______ are sparsely located throughout the skin and respond to stretching of fingers and limbs.
Ruffini Corpuscles
The generator potential produced by a Pacinian corpuscle in response to mechanical stimulation is...
proportional to stimulus intensity.
The onion-like receptor found in skin that selectively responds to vibration and pressure is the...
Pacinian Corpuscle
Receptors that show little or no adaptation to maintained stimulation are called _______ receptors.
tonic
The progressive loss of sensitivity of a sensory receptor as a consequence of sustained stimulation is known as...
sensory adaptation
Which statements best reflects the evolutionary advantage of sensory adaptation?
It prevents the nervous system from being overwhelmed by stimuli that offer very little information about the world.
The band of the skin that is innervated by a single spinal nerve is called a...
dermatome
Which of the following is an example of synesthesia?
Envisioning bright fireworks whenever you hear Mozart
Which structure is NOT part of the external or middle ear?
Organ of Corti
The tiny bones of the middle ear are collectively known as the...
ossicles
The stapes connects to the...
oval window
The organ of Corti lies within the...
middle canal
The canals of the cochlea are filled with _______; thus, sound is carried in the form of _______
fluid; waves
The auditory stimulus is transduced into electrical signals by the...
hair cells
Most information about auditory stimuli is conveyed from inner hair cells to the brain by the transmitter...
glutamate
The _______ ear contains the tiny chain of bones that facilitate sound conduction
middle
Frequency of sound is measured in...
hertz
Sound latency differences between the two ears allows an animal to...
localize sounds
The _______ is (are) primarily responsible for refracting light to form an image on the retina
cornea
The bending of light rays by the optical components of the eye is called...
refraction
The process by which the shape of the lens is altered in order to project a sharp image onto the retina is called...
accommodation
Cones in the retina form synapses with which of the following cell types?
bipolar cells
The bipolar cells of the retina have contacts with the _______ cells
all of the above
Cones are most densely concentrated in which part of the human retina?
fovea
Quanta of light that enter the eye are captured in rod cells by...
rhodopsin
The lack of photoreceptors at the optic disc creates _______ in our visual field
a blind spot
_______ of the pupils is associated with the use of drugs that block acetylcholine transmission, such as belladonna
dilation
The optic disc is the...
area of the retina through which the axons of the ganglion cells exit
Glands that secrete their products outside the body are referred to as _______ glands
exocrine
Hormone-producing glands are called _______ glands
endocrine
Which pair lists two of the three major classes of hormones?
peptide and steroid
Cells located in the _______ synthesize oxytocin and vasopressin and transport these hormones to the _______
hypothalamus; posterior pituitary
Vasopressin is secreted by the...
posterior pituitary
The essential feature of tropic hormones is that they...
affect the secretion of other endocrine glands
The hormone ________ controls the milk letdown reflex and plays a role in formation of social bonds
oxytocin
A hormone that is normally found only in males is...
none of the above
Men rooting for a sports team will produce more _______ if their team wins
testosterone
Sperm and ova are known as _______, and when they fuse they form a(n) _______
gametes; zygote
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