Lab quiz

Question 1

A person with farsightedness has:

Answer 1

A) Light rays focused behind the retina

Question 2

A person with nearsightedness has:

Answer 2

A) Light rays focused in front of the retina

Question 3

A person who cannot see clearly objects placed 2 meters away from them:

Answer 3

B) needs convave corrective lens with a power of - 0.5 D

C) has myopia

Question 4

The “least distance of distinct vision” for a young adult with normal vision is:

Answer 4

25 cm

Question 5

Color vision deficiency is due to:

Answer 5

A) A lack of a cone pigment
C) A X-linked recessive gene mutation

Bonus: Affects men more often than women

Question 6

The “physiological blind spot” is due to:

Answer 6

A) Ophthalmic arteries and veins
B) The optic disk and papilla
C) Lack of photoreceptors in an area of the retina
D) The axons of the ganglion cells that form the optic nerve

Question 7

An ophthalmoscope is a device used for:

Answer 7

B) Performing fundoscopic examinations

D) Looking into the eye

Question 8

Hearing: Your patient reports hearing loss in their right ear. You perform Webers test by placing a tuning fork on the top of their head and asking on which side they perceive the tone to be the loudest. Your patient reports the tone is loudest in their right ear. What type of hearing loss would you suspect they have?

Answer 8

D) Conductive hearing loss

Question 9

Hearing: What are the two most common causes of sensorineural hearing loss?

Answer 9

Age-related hearing loss

Noise trauma

Question 10

Hearing: What audiogram feature is typical for age-related hearing loss?

Answer 10

E) It slopes towards higher frequencies; i.e. higher frequencies are perceived only at higher levels.

Question 11

Vestibular: Which of these condition(s)/compound(s) does (do) usually not cause nystagmus?
  A) Neuritis 
  B) Pneumonia 
  C) Alcohol 
  D) Pesticide poisoning 
  E) Drugs

Answer 11

B) Pneumonia

Question 12

Vestibular: How many cranial nerve nuclei are involved in the vestibulo-occular reflex?

Answer 12

D) three, the 8th, the 6th and the 3rd cranial nerve

The vestibulocochlear nerve, The abducens nerve, The oculomotor nerve

Question 13

Vestibular: Direction of rotation is detected by:

Answer 13

D) All three semicircular canals

Question 14

A Neurological status examination includes the following:

Answer 14

Biceps reflex and motor coordination
Vision and the pupillary light reflex (consensual)
Olfaction

Question 15

Cranial nerves: Sensory input for taste is carried by:

Answer 15

C) The facial (VII) and glossopharyngeal (IX) nerves for the anterior two-thirds and posterior one-third of the tongue, respectively

Question 16

Somatosensory functions tests include these sensory tests in a patient:

Answer 16

Proprioception (limb position)

Temperature, vibration and pain sensation

Question 17

Motor functions: what is assessed when watching a patient walk?

Answer 17

1. Initiation of movement
2. Speed and symmetry
3. Arm swing and balance

Question 18

Reflexes: Positive Babinski reflex in an adult could indicate:

Answer 18

Brain tumor or injury.
Meningitis (infection of the membranes covering the brain and spinal cord)
Multiple sclerosis.
Spinal cord injury, defect, or tumor