Skin and Sensory Receptors MCQs

Question 1

Thick skin…

• is found in areas subject to extreme shearing forces.
• contains hair follicles.
• contains sebaceous glands.
• lacks sweat glands.

Answer 1

is found in areas subject to extreme shearing forces

Question 2

In this section, the layer marked by the yellow spot

• is composed of stratified squamous keratinised epithelium.
• is the layer in which Merkel cells are located.
• is the layer in which the majority of melanocytes are located.
• is made up of dense, irregular connective tissue.

Answer 2

is made up of dense, irregular connective tissue.

Question 3

This is a thin section of the epidermis of thin skin. The layer marked by the red spot

• is composed of dead, keratinised cells.
• contains the blood vessels that supply the epidermis.
• is the layer in which most cell division occurs.
• is characterised by the presence of keratohyalin granules and the formation of keratin bundles.

Answer 3

Is the layer in which most cell division occurs.

Question 4

In this section of skin, the blue arrows indicate

Sweat glands

Sebaceous glands

Sensory receptors

Hair follicles

Answer 4

sensory receptors

Question 5

The glandular structure marked by the black spot

is a sweat gland.

produces a watery secretion.

has a duct which opens into a hair follicle.

plays a role in thermoregulation.

Answer 5

has a duct which opens into a hair follicle.

Question 6

Which one of the following statements referring to hair follicles is UNTRUE?

Hair follicles develop from the epidermis.

Contraction of the arrector pili muscles causes the hairs to stand on end.

Hair follicles may be encircled by free nerve endings which act as slowly adapting mechanoreceptors.

Arrector pili muscles contract in response to sympathetic stimulation.

Answer 6

Hair follicles may be encircled by free nerve endings which act as slowly adapting mechanoreceptors.

Question 7

Melanocytes

are found within the papillary layer of the dermis

synthesise melanin which is transferred to adjacent keratinocytes.

are found within the stratum spinosum of the epidermis.

form sensory receptors in association with free nerve endings

Answer 7

synthesise melanin which is transferred to adjacent keratinocytes.

Question 8

The encapsulated sensory nerve ending illustrated is

a Pacinian corpuscle.

a Meissner’s corpuscle.

a muscle spindle.

a Ruffini corpuscle.

Answer 8

Pacinian corpuscle

Question 9

The receptor illustrated is sensitive to

noxious heat.

pressure.

severe cold.

pin prick.

Answer 9

pressure

Question 10

The receptor illustrated

Answer 10

is a rapidly adapting mechanoreceptor