Question 1

Which of the following best describes sensory transduction?

Accepted Answer

The conversion of a physical or chemical stimulus into an electrical signal by a sensory receptor.

Question 2

A patient is unable to feel pain in their left hand after a spinal cord injury. Which neuron in the sensory pathway is most likely damaged?

Accepted Answer

Second-order neuron

Question 3

Which of the following correctly matches a sensory receptor with its location and stimulus type?

Accepted Answer

Proprioceptor – located in joints; detects body position

Question 4

Which sequence correctly traces the path of a sensation from detection to perception?

Accepted Answer

Stimulus → Sensory receptor → First-order neuron → Second-order neuron → Third-order neuron → Cerebral cortex

Question 5

Which of the following best describes the role of the cerebellum in movement?

Accepted Answer

Monitors and coordinates ongoing movement for accuracy

Question 6

A patient exhibits exaggerated knee-jerk reflexes. Which type of reflex is being tested, and what is its basic pathway?

Accepted Answer

Stretch reflex; monosynaptic pathway

Question 7

Which neurotransmitter is released by preganglionic neurons of the sympathetic nervous system?

Accepted Answer

Acetylcholine

Question 8

Which of the following is a correct effect of the parasympathetic nervous system?

Accepted Answer

Stimulates digestion

Question 9

Which statement about olfactory receptors is correct?

Accepted Answer

They are specialized neurons found in the superior region of the nasal cavity.

Question 10

Which of the following best explains how odorants activate olfactory receptors?

Accepted Answer

Odorants dissolve in mucus and bind to receptors on olfactory cilia, triggering an action potential.

Question 11

Which of the following is NOT one of the five primary taste sensations?

Accepted Answer

Spicy

Question 12

Which structure is responsible for focusing light onto the retina?

Accepted Answer

Lens

Question 13

Which of the following best describes the difference between rods and cones in the retina?

Accepted Answer

Rods are responsible for peripheral and night vision; cones are responsible for color and sharp vision.

Question 14

A patient has difficulty hearing high-pitched sounds but can hear low-pitched sounds. Which part of the cochlea is most likely damaged?

Accepted Answer

The base of the cochlea

Question 15

Which of the following correctly traces the path of sound conduction from the auricle to the inner ear fluids?

Accepted Answer

Auricle → Tympanic membrane → Ossicles → Oval window → Cochlear fluids

Question 16

Which equation best represents the relationship between stimulus intensity and receptor potential amplitude?

Accepted Answer

$$V_{RP} = k \cdot I_{stim}$$

Question 17

Which structure in the inner ear is primarily responsible for detecting rotational (dynamic) equilibrium?

Accepted Answer

Cristae ampullaris of the semicircular canals

Question 18

Which of the following best describes a crossed-extension reflex?

Accepted Answer

A reflex that causes extension of muscles on the side opposite to the stimulus to maintain balance.

Question 19

Which of the following best distinguishes between static and dynamic equilibrium?

Accepted Answer

Static equilibrium detects linear acceleration; dynamic equilibrium detects rotational movement.

Question 20

Which pathway correctly traces the action potentials from the vestibular apparatus to the brain for balance sensation?

Accepted Answer

Vestibular hair cells → Vestibular nerve → Vestibular nuclei in brainstem → Thalamus → Vestibular cortex

Study Guide for ANP Lecture Exam 5: Sensory, Motor, and Special Senses Pathways

Study Guide - Practice Questions