Question

In: Anatomy and Physiology

1...Which of the following types of hair is generally not found on bald men? lanugo hairs...

1...Which of the following types of hair is generally not found on bald men?

lanugo hairs

All are found on bald men.

terminal hairs

vellus hairs

a...What structural characteristic of the epidermis prevents water loss and the entry of pathogens?

stratified squamous epithelium

tactile disc

dermal papillae

melanocyte

b...If you have a manicure and get your cuticles pushed back, the manicurist is technically doing what?

Pushing a portion of the stratum corneum back from the eponychium

Pushing a portion of the stratum spinosum back from the lunula.

Pushing a portion of the stratum germanitivum back from the hyponichium

Pushing a portion of the stratum lucidum back from the nail body.

c....Which layer of the dermis contains the capillaries, lymphatic vessels, and sensory nerve fibers that supply the epidermis?

subcutaneous layer

stratum basale

reticular layer

papillary layer

d....Reduction in the number of elastic fibers in the skin of the elderly results in __________.

osteoporosis

hair loss

wrinkles

skin dryness

e....All of the following are functions of the subcutaneous layer EXCEPT __________.

stabilizing the position of the skin relative to underlying tissues

thermoregulation

acting as a blood reservoir

detection of fine touch

The layer that contains areolar connective tissue is the __________ layer.

epidermal

subcutaneous

reticular

keratin

Which of the following is NOT an aging effect on skin?

Hair follicles become more active, producing longer, darker hairs.

Glandular activity decreases.

Blood supply to the dermis is reduced.

The epidermis thins and the integument becomes less resilient.

Why are the elderly more prone to skin infections?

They have a thinner epidermis.

They have fewer dendritic (Langerhans) cells.

Tissue repairs take longer.

All of the listed responses are corre

Individuals who live in locations with limited exposure to sunlight can have abnormal bone development due to an inability to absorb calcium and phosphate ions from the small intestine. Why does a limited exposure to sunlight cause abnormal bone development?

Cholecalciferol, or vitamin D₃, is necessary for the normal absorption of calcium and phosphate ions. Vitamin D₃ is made by cells in the epidermis due to exposure to sunlight. Without enough exposure to sunlight, the body won't produce enough vitamin D₃.

People exercise less in areas where there is limited sunlight. This lack of exercise can cause abnormal development of bones.

People sleep more in areas of limited sunlight.

People are more depressed in areas with limited sunlight, and depression can cause abnormal development of bones.

The skin can move easily over the underlying muscles because of the loose connective tissue within the __________.

dermis

cutaneous membrane

epidermis

hypodermis

Two women are comparable in age, body conformation, and are pregnant at the same time, but one experiences stretch marks, while the other does not. What would be a possible hypothesis for why there was an observed difference?

The woman with stretch marks has a greater collagen-to-elastic fiber ratio.

The woman may have different gender babies.

The woman with less stretch marks has larger skin cells.

The woman without stretch marks has more cholesterol in her diet, which affects her cell membranes.

Collagen to repair a deep skin wound is produced by __________.

keratinocytes

macrophages

epidermal fibroblasts

fibroblasts

Skin exposed to ultraviolet light increases production of __________.

keratin

carotene

collagen

melanin

If an injury covers a large area, dermal repairs first begin with the division and migration of what cell type?

epidermal cells

fibroblast cells

melanocytes

epithelial cells

The process of skin repair after injury begins with __________.

formation of scar tissue

inflammation

formation of granulation tissue

formation of a blood clot

The epidermal layer that consists almost entirely of keratin is the __________.

reticular layer

stratum granulosum

stratum basale

stratum corneum

Which of these is NOT an accessory structure of the skin?

sebaceous glands

hair

hair follicles

dermis

Expert Solution

1...Which of the following types of hair is generally not found on bald men?

Answer: C) terminal Hair

Explanation : Male pattern baldness) is the Miniaturization of terminal hair to vellus hair.

What structural characteristic of the epidermis prevents water loss and the entry of pathogens?

Answer: stratified squamous epithelium

b...If you have a manicure and get your cuticles pushed back, the manicurist is technically doing what?

Answer :Pushing a portion of the stratum corneum back from the eponychium

c....Which layer of the dermis contains the capillaries, lymphatic vessels, and sensory nerve fibers that supply the epidermis?

Answer: D) papillary layer

d....Reduction in the number of elastic fibers in the skin of the elderly results in __________

Answer: wrinkels

e....All of the following are functions of the subcutaneous layer EXCEPT __________

Answer: detection for fine touch

The layer that contains areolar connective tissue is the __________ layer.

Answer C) reticular

Which of the following is NOT an aging effect on skin?

Answer : A) Hair follicles become more active, producing longer, darker hairs.

Why are the elderly more prone to skin infections?

Answer : D) all. Of the listed response are correct

Two women are comparable in age, body conformation, and are pregnant at the same time, but one experiences stretch marks, while the other does not. What would be a possible hypothesis for why there was an observed difference?

Answer : A) The woman with stretch marks has a greater collagen-to-elastic fiber ratio.

Collagen to repair a deep skin wound is produced by __________.

Answer: Epidermal fibroblast

Skin exposed to ultraviolet light increases production of __________.

Answer: D) melanin

If an injury covers a large area, dermal repairs first begin with the division and migration of what cell type?

Answer : fibroblasts

The process of skin repair after injury begins with

Answer : inflammation

The epidermal layer that consists almost entirely of keratin is the

Answer : stratum. Corneum

Which of these is NOT an accessory structure of the skin?

Answer: Dermis

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