Q: Which equation best represents the pathway of a monosynaptic reflex arc?

$$\text{Receptor} \rightarrow \text{Sensory neuron} \rightarrow \text{Motor neuron} \rightarrow \text{Effector}$$

Question 1

Which of the following best describes the sequence of components in a typical reflex arc?

Accepted Answer

Receptor → Sensory neuron → Integration center → Motor neuron → Effector

Question 2

A patient is unable to blink when their cornea is touched, but other facial movements are intact. Which component of the corneal reflex arc is most likely damaged?

Accepted Answer

The sensory neuron (cranial nerve V)

Question 3

Which of the following reflexes is classified as a somatic, spinal, monosynaptic reflex?

Accepted Answer

Patellar (knee-jerk) reflex

Question 4

Why are cord-mediated (spinal) reflexes generally faster than cranial reflexes?

Accepted Answer

They bypass higher brain centers, reducing synaptic delay

Question 5

Which of the following is an example of a consensual reflex?

Accepted Answer

Photopupillary reflex

Question 6

A patient presents with dorsiflexion of the big toe and fanning of the other toes when the sole of the foot is stroked. What is this response called, and what does it indicate?

Accepted Answer

Babinski sign; possible upper motor neuron lesion

Question 7

Which of the following best differentiates a somatic reflex from an autonomic reflex?

Accepted Answer

Somatic reflexes involve skeletal muscle; autonomic reflexes involve smooth or cardiac muscle

Question 8

Which equation best represents the pathway of a monosynaptic reflex arc?

Accepted Answer

$$	ext{Receptor} ightarrow 	ext{Sensory neuron} ightarrow 	ext{Motor neuron} ightarrow 	ext{Effector}$$

Question 9

During a physical exam, a physician tests the Achilles reflex. Which spinal nerves are primarily involved in this reflex?

Accepted Answer

S1-S2

Question 10

Which of the following best explains why reflex testing is an important part of a neurological examination?

Accepted Answer

It provides information about the integrity of specific nerve pathways

Question 11

A patient’s left pupil constricts when light is shone into the right eye. This is an example of which type of reflex?

Accepted Answer

Consensual reflex

Question 12

Which of the following is true regarding the integration center in a reflex arc?

Accepted Answer

It may consist of one or more interneurons in the spinal cord or brain

Question 13

Which of the following best describes the response in the plantar reflex in a healthy adult?

Accepted Answer

Plantar flexion of all the toes

Question 14

Which of the following is NOT a characteristic of a visceral (autonomic) reflex?

Accepted Answer

Is under voluntary control

Question 15

Which of the following best describes the function of the Golgi tendon organ in the patellar reflex?

Accepted Answer

Detects stretch in the patellar ligament

Question 16

Which of the following is a correct statement about the gag reflex?

Accepted Answer

It is a somatic and cranial reflex involving cranial nerve IX

Question 17

Which of the following best describes the difference between a monosynaptic and a polysynaptic reflex arc?

Accepted Answer

Monosynaptic arcs have only one synapse between sensory and motor neurons

Question 18

Which of the following is the correct equation for the stimulus-response model in neural pathways?

Accepted Answer

$$	ext{Stimulus} ightarrow 	ext{Receptor} ightarrow 	ext{Sensory neuron} ightarrow 	ext{Integration center} ightarrow 	ext{Motor neuron} ightarrow 	ext{Effector}$$

Human Reflex Physiology: Structure and Function of Reflex Arcs

Study Guide - Practice Questions

Study Guide - Flashcards