Medical Quiz

Dermis Quiz


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What constitutes sebum?

A. the secretary product and cell debris

B. keratin

C. hair shafts and follicles


What has a more sense fibrous character

A. Reticular layer

B. Papillary layer

C. Follicular layer

D. Keratin layer


Sweat glands

A. coiled tubular glands in the deep dermis

B. grape-shaped collections of cells with a common duct that surround hair follicles


What does the dermis consist of?

A. a fibrous connective tissue supporting arteries and veins, lymphatic capillaries, nerves and sensory receptors

B. a fibrous lymphatic tissue supporting only veins

C. separated by the dermis with a basement membrane

D. bordered by superficial fascia, a loose connective tissue layer with variable amounts of adipose tissue


What are hair shafts composed of?

A. layers of keratin surrounded by layers of follicular cells

B. layers in follicles in plant cells

C. follicles of the eyelashes


The upper or most superficial layer of the dermis

A. papillary layer, characterized by a vascular, loose connective tissue

B. follicular layer, characterized by a vascular, loose connective tissue


Sebum

A. coats the skin and hairs, providing a degree of waterproofing

B. coats the eyes and eyeballs, providing a degree of waterproofing

C. coats the fingernails and toenails only, providing a degree of waterproofing


How do the sweat glands traverse the epidermis

A. by spiraling around the keratinocytes and open onto the epidermal surface

B. spirals around hair follicles and open onto the epidermal surface


What results in burst cells

A. continued lipid engorgement

B. continued muscle engorgement

C. continued eating engorgement

D. continued cell entirety engorgement


Sweat glands- the cells produce:

A. sweat, a filtrate of plasma

B. tears, a filtrate of plasma

C. eyelashes, a filtrate of plasma

D. saliva, a filtrate of plasma


Pegs

A. Has a strong attachment to the basement membrane and contains vessels, nerve endings, and axons among the collagen and elastic fibers

B. Has loose attachment to the inner membrane and contains layers, nerve endings, and axons among the collagen and elastic fibers


What is a sign of increased vigilance

A. hair standing on end in mammals

B. hair laying down in mammals

C. hair falling on end in mammals

D. hair breaking off on end in mammals


True or False: Hair shafts rise from epidermal follicles and are not found in thick skin

A. TRUE

B. FALSE


Sebaceous glands

A. grape-shaped collections of cells with a common duct that surround hair follicles

B. coiled tubular glands in the deep dermis


Sweat is a means by what

A. by which the hypothalamus can induce a degree of cooling by evaporation

B. by which the keratinious can induce a degree of heating by evaporation


Arrector pili muscle

A. an obliquely placed bundle of smooth muscle attached to the outer membrane of the follicle to a papillary peg under the dermis

B. a commonly placed bundle of muscle attached to the inner membrane of the follicle to a papillary peg above the dermis




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