18. Sense Organs - Quizzes

Question 1

State the unit through which volume is measured

Answer 1

Decibels (dB)

Question 2

Name the THREE bones of the middle ear

Answer 2

Malleus (Hammer)
Incus (Anvil)
Stapes (Stirrup)

Question 3

What structure does the stapes connect too?

Answer 3

Oval window

Question 4

What TWO bones in the inner ear send nerve impulses for
balance?

Answer 4

Vestibule
Semi-circular canals

Question 5

Describe what happens pathologically in Meniere’s disease.
List the THREE main symptoms.

Answer 5

Distention of the membraneous labyrinth.

Vertigo
Hearing loss
Tinnitus

Question 6

Explain what is meant by vertigo

Answer 6

The abnormal illusion of movement.

Question 7

Describe the function of the eustachian tube

Answer 7

To equalise pressure in the middle ear

Question 8

Explain what is meant by secretory otitis media

Answer 8

AKA Glue ear
Accumulation of fluid in the middle ear

Question 9

Name the TWO main categories of hearing loss causes

Answer 9

Conductive
Sensory

Question 10

Name THREE accessory structures that protect the eye

Answer 10

Eyebrows
Eyelashes
Eyelids
Lacrimal apparatus

Question 11

Describe the role of the lacrimal apparatus

Answer 11

To produce tears which protect the eye

Question 12

What is meant by the following: a) macula lutea b) cone cell?

Answer 12

a) the central area of the retina giving highest visual acutity
b) one of the two visual receptor cells, receives colour

Question 13

What is meant by refraction? Indicate TWO structures in the eye that contribute to this process.

Answer 13

Refraction is bending of light
The cornea and the lens

Question 14

In accommodation of vision, contraction of the ciliary body causes what to happen to the lens of the eye?

Answer 14

The lens will become more convex as the suspensory ligaments relax, allowing greater refraction of light (for near vision)

Question 15

What is meant by the optic disc?

Answer 15

The site where the optic nerve exits the eyeball

Question 16

Explain the possible pathological effects of diabetes mellitus on the retina.

Answer 16

Could lead to Diabetic retinopathy

Haemorrhages
Microanyurisms
Neovascularisation

Question 17

Name the TWO cranial nerves involved in taste

Answer 17

Glossopharyngeal (IX)
Facial (VII)

Question 18

Explain what is meant by papillae

Answer 18

Elevations on tongue to assist with gripping food and creating larger surface area for taste.

Question 20

List THREE symptoms of uveitis

Answer 20

Red, bloodshot eyes
Watering
Pain
Photosensitivity

Question 21

Explain what is meant by a grommet

Answer 21

A tiny duct piercing the tympanic membrane that allows the middle ear to drain