Human bio ch 5

Events of skin repair process

1. Inflammatory response 2. Formation of scab 3. Phagocytosis of pathogens and debris 4. Formation of scar tissue

Functions of the skin include:

regulating body temperature

holocrine secretion

release of a substance caused by the rupture of a gland cell, which becomes part of the secretion

The layer of the skin that contains bundles of collagen and elastic fibers responsible for the strength of the skin is the ________ layer.

reticular layer

Which layers of the epidermis would be different in thick skin compared to a sample of thin skin?

Stratum lucidum, stratum corneum

Why are injections administered in the hypodermis when administering drugs using a hypodermic needle?

There are no vital organs in the region

In other mammals, the ________ glands function as scent glands, providing an important form of communication.

apocrine

cyanosis

bluish discoloration of the skin

Through which mechanism does perspiration function in cooling the body?

evaporation

The observed differences in skin color reflect the levels of ________ production.

melanin

Melanin serves to protect cells in the deeper layers of the epidermis from

ultraviolet radiation

The most mitotically active part of the skin is

Epidermis

sebaceous

Acne formation

Merocrine

Control body temp

Layer containing adipose tissue

Dermis

The loose connective tissue that separates the integumentary from deeper tissues and organs is called

Hypodermis

Which of the following is a red yellow or brown black pigment produced in the epidermis?

Melanin

second and third degree burns destroyed the epidermis and dermis of your arm, predict the long term consequences of the burn

No growth of hair in the damaged skin area

What is the name of the other, deeper layer of the dermis?

Recticular layer

Which of the following is an oil gland that secretes into hair follicles?

Sebaceous gland

Elderly people tend to have tougher skin and more brittle hair than younger people, what structure is associated with this problem?

Sebaceous glands

apocrine glands

Secrete into hair follicles in the armpits

The highly vascular layer of the skin which provides thermoregulation via changing blood flow is the

dermis

Ceruminous

ear wax

What type of tissue is the epidermis?

stratified squamous epithelium

In which of the epidermal layers are the cells undergoing mitosis?

stratum basale

Which layer of the epidermis is responsible for water resistance?

stratum corneum

The epidermal layer whose cells have stopped dividing and started to produce large amounts of keratin is the

stratum granulosum