Question 1

Which of the following best describes the difference between sensation and perception?

Accepted Answer

Sensation is the process by which information about environmental stimuli is received by a sensory receptor and converted to action potentials, while perception is the brain's interpretation of those action potentials.

Question 2

A patient is unable to detect changes in muscle length and joint position. Which type of sensory receptor is most likely impaired?

Accepted Answer

Proprioceptor

Question 3

Which of the following reflexes is tested by tapping the patellar tendon and observing the knee-jerk response?

Accepted Answer

Tendon (stretch) reflex

Question 4

During a physical exam, a doctor shines a light into a patient's eye and observes the pupil constricting. Which muscle is responsible for this response?

Accepted Answer

Sphincter pupillae

Question 5

Which equation correctly represents the relationship between lens power ($$P) $$and focal length ($$f) in $$diopters?

Accepted Answer

$$P = \frac{1}{f}$$

Question 6

A patient presents with conductive deafness. Which structure is most likely damaged?

Accepted Answer

Auditory ossicles

Question 7

Which of the following best describes the function of the semicircular canals?

Accepted Answer

They contribute to balance and equilibrium by detecting rotational movements of the head.

Question 8

A person is unable to distinguish between red and green colors. Which theory best explains this type of color blindness?

Accepted Answer

Young-Helmholtz trichromatic theory

Question 9

Which test is commonly used to assess visual acuity?

Accepted Answer

Snellen Test

Question 10

A patient is asked to follow a moving object with their eyes. After the movement stops, their eyes continue to move slowly in the opposite direction. What is this phenomenon called?

Accepted Answer

Post-rotary nystagmus

Question 11

Which of the following is NOT a component of a reflex arc?

Accepted Answer

Photoreceptor cell

Question 12

Which sensory receptor is responsible for detecting harmful stimuli that may cause pain?

Accepted Answer

Nociceptor

Question 13

A patient has difficulty focusing on near objects due to age-related changes in the lens. What is this condition called?

Accepted Answer

Presbyopia

Question 14

Which of the following best describes the function of proprioceptors?

Accepted Answer

They provide information about body position and movement.

Question 15

Which of the following statements about the blind spot in the eye is correct?

Accepted Answer

It is the area where the optic nerve exits the retina and contains no photoreceptors.

Question 16

Which of the following best explains why individuals with myopia have blurry vision when viewing distant objects?

Accepted Answer

The lens focuses light in front of the retina.

Question 17

Which of the following is a correct description of sensory adaptation?

Accepted Answer

It is the loss of conscious awareness of a stimulus after prolonged exposure.

Question 18

Which of the following is true regarding the Ishihara Test?

Accepted Answer

It uses plates of differently colored dots to test for color blindness.

Question 19

A patient is unable to distinguish numbers formed by colored dots on a plate, but can see the dots themselves. What condition does this most likely indicate?

Accepted Answer

Color blindness

Question 20

Which of the following best describes the function of antagonistic muscle pairs in reflexes?

Accepted Answer

They produce opposing actions to allow for controlled movement.

Sensory Receptors, Reflexes, and Special Senses: Study Notes for Anatomy & Physiology

Guida di studio - Domande di pratica

Study guide - Flashcard