Question 1

The part of the visual system responsible for controlling pupil size is the _____.&#10;A) frontal eye fields&#10;B) pretectum&#10;C) visual cortex&#10;D) superior colliculus

Accepted Answer

The pretectum is a region of the midbrain that receives information from the retina and sends signals to the Edinger-Westphal nucleus, which controls the size of the pupil. The other brain regions listed are involved in different aspects of visual processing but not specifically in controlling pupil size.

Question 2

New research indicates that the experience of tasting a flavor is likely to be the result of neurons that respond:&#10;A) to both olfaction and taste.&#10;B) primarily to olfaction.&#10;C) primarily to taste.&#10;D) to both taste and the appearance of food.

Accepted Answer

The experience of tasting a flavor is likely to be the result of neurons that respond to both olfaction and taste. This is because flavor is a combination of taste and smell, with olfaction contributing significantly more to the perception of flavor than taste.

Question 3

Neural _____ modify messages between the sensory receptors and the brain.&#10;A) receptive fields&#10;B) relays&#10;C) potentials&#10;D) discharges

Accepted Answer

Relays are structures within the nervous system that transmit information between different parts of the brain and the body. They act as "switching stations" that modify and integrate incoming messages, allowing for more efficient and accurate processing. Receptive fields refer to the area of the sensory surface that, when stimulated, alter the firing rate of a particular neuron, while potentials and discharges are specific types of neural activity.

Question 4

The map on which the relative sensitivity of body parts are represented by size is called:&#10;A) a vestibular system.&#10;B) a M&#252;ller-Lyer illusion.&#10;C) a homunculus.&#10;D) the central organization of sensory systems.

Accepted Answer

The representation of sensitivity of body parts by size is called a homunculus. The homunculus is a map that shows the proportions of the human body as they would be if it were proportional to the sensory cortex. The sensory cortex is the part of the brain that receives and processes sensory information from different parts of the body. The homunculus is arranged with more sensitive areas like the tongue and hands represented by larger areas on the map.

Question 5

In the Brodmann system, primary visual cortex is given the number _____.&#10;A) 17&#10;B) 19&#10;C) 44&#10;D) 7

Accepted Answer

According to the Brodmann system, primary visual cortex is assigned the number 17.

Question 6

Brodmann's area 41 is associated with which sense?&#10;A) taste&#10;B) vision&#10;C) olfaction&#10;D) audition

Accepted Answer

Brodmann's area 41 is also known as the primary auditory cortex, which is responsible for processing auditory information, such as sound localization and speech perception. Therefore, the correct choice is D, audition.

Question 7

Receptors that respond to external stimuli are called _____; receptors that respond to our own activity are called _____.&#10;A) interoceptive; exteroceptive&#10;B) exteroceptive; interoceptive&#10;C) exteroceptive; proprioceptive&#10;D) proprioceptive; interoceptive

Accepted Answer

Exteroceptive receptors respond to external stimuli, while interoceptive receptors respond to our own activity. Therefore, the first part of option B is correct. The other options are either incorrect (A and D) or refer to a different type of receptor (C refers to proprioceptive receptors).

Question 8

The retina is to seeing as the _____ is to hearing.&#10;A) round window&#10;B) ear drum&#10;C) organ of Corti&#10;D) cochlea

Accepted Answer

The organ of Corti is responsible for hearing, just as the retina is responsible for seeing.

Question 9

Voluntary eye movements are largely regulated by neural circuits centered in the _____.&#10;A) pretectum&#10;B) frontal eye fields&#10;C) visual cortex&#10;D) superior colliculus

Accepted Answer

Voluntary eye movements are primarily controlled by the frontal eye fields, a region in the frontal cortex of the brain. This area is crucial for initiating and controlling voluntary movements of the eyes.

Question 10

To communicate with the brain, the sensory systems use:&#10;A) different codes depending on the type of receptors.&#10;B) different codes depending on the target in the brain.&#10;C) different codes depending on the reflexes and movements made in relation to the stimulation.&#10;D) a common code to communicate, sending information to the brain with action potentials.

Accepted Answer

The sensory systems all use a common code to communicate with the brain, which involves sending information through action potentials. While different receptors may respond to different types of stimuli, and information may be processed in different areas of the brain, the basic language of communication between the senses and the brain is the same.

Question 11

The axons of ganglion cells form the _____ nerve.&#10;A) auditory&#10;B) olfactory&#10;C) optic&#10;D) sciatic

Accepted Answer

The answer of The axons of ganglion cells form the...

Question 12

The main thalamic nucleus that sends signals about taste to the cortex is the _____.&#10;A) lateral geniculate&#10;B) medial geniculate&#10;C) ventral posteromedial&#10;D) ventral basal lateral&#10;Answer Key

Accepted Answer

The answer of The main thalamic nucleus that sends signals...

Question 13

Otolith organs are associated with the sense of _____.&#10;A) balance&#10;B) pain&#10;C) touch&#10;D) kinesthesis

Accepted Answer

The answer of Otolith organs are associated with the sense...

Question 14

Pacinian corpuscles are receptors in the _____ sensory system.&#10;A) balance&#10;B) touch&#10;C) pain&#10;D) kinesthesis

Accepted Answer

The answer of Pacinian corpuscles are receptors in the _____...

Question 15

Pitch is MOST closely related to _____.&#10;A) loudness&#10;B) frequency&#10;C) location&#10;D) timbre

Accepted Answer

The answer of Pitch is MOST closely related to _____.&#10;A)...

Deck 8: Extension: C - Organization of the Sensory Systems