Question 1

Which division of the nervous system is primarily responsible for integrating sensory information and coordinating motor output?

Accepted Answer

Central nervous system

Question 2

A patient presents with loss of basic life functions such as breathing and heart rate regulation. Which brain region is most likely affected?

Accepted Answer

Medulla oblongata

Question 3

Which structure acts as a relay station for sensory information traveling to the cerebral cortex?

Accepted Answer

Thalamus

Question 4

The limbic system is most closely associated with which of the following functions?

Accepted Answer

Emotion and memory

Question 5

Which lobe of the cerebral cortex is primarily responsible for processing somatosensory information?

Accepted Answer

Parietal lobe

Question 6

A lesion in the occipital lobe would most likely result in deficits in which sensory modality?

Accepted Answer

Vision

Question 7

Which of the following best describes the function of the hypothalamus?

Accepted Answer

Regulate homeostasis and behavioral drives

Question 8

Which type of sensory receptor is responsible for detecting changes in blood pressure?

Accepted Answer

Baroreceptor

Question 9

Why are the fingertips more sensitive to touch than the back?

Accepted Answer

Fingertips have a higher density of sensory neurons with smaller receptive fields

Question 10

Which pathway correctly describes the transmission of somatosensory information from the skin to conscious awareness?

Accepted Answer

Primary afferent neuron → secondary afferent neuron in the medulla → tertiary afferent neuron in the thalamus → somatosensory cortex

Question 11

Which equation best represents the relationship between stimulus intensity and frequency of action potentials in a sensory neuron?

Accepted Answer

$$f = k 	imes I$$

Question 12

A patient is unable to experience pain in their left hand. Which type of receptor is most likely damaged?

Accepted Answer

Nociceptor

Question 13

Which of the following best explains sensory adaptation in rapidly adapting (phasic) receptors?

Accepted Answer

They fire only at the onset and offset of a stimulus

Question 14

Which brain region is most involved in the conscious perception of taste?

Accepted Answer

Primary gustatory cortex

Question 15

If a person has damage to the corpus callosum, which of the following is most likely to be affected?

Accepted Answer

Communication between the two cerebral hemispheres

Question 16

Which equation would you use to calculate the total number of action potentials generated by a sensory neuron over a time period $$t$$, given a constant firing rate $$f$$?

Accepted Answer

$$N = f 	imes t$$

Question 17

Which of the following is NOT considered a special sense?

Accepted Answer

Touch

Question 18

A person is unable to distinguish between sweet and bitter tastes. Which of the following is the most likely explanation?

Accepted Answer

Loss of specific taste receptor cells for sweet and bitter molecules

Question 19

Which of the following best describes the sensory homunculus?

Accepted Answer

A representation of the body in the somatosensory cortex, with area size proportional to sensitivity

Question 20

Which equation would you use to estimate the sensitivity ($$S) of a $$body region, given the number of receptive fields ($$n) $$and the area ($$A) of $$the region?

Accepted Answer

$$S = \frac{n}{A}$$

Neurophysiology: The Brain & Sensory Systems – Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard