Chapter 5 Quiz

Jaundiced skin has a _______ hue, often due to liver problems. Cyanotic skin appears _________ due to lack of oxygen and excessive carbon dioxide in the blood vessels of the skin.

yellow, blue

Which structure in the figure produces melanin?

D

The root of a hair follicle penetrates into the _______.

Dermis

__________ glands are abundant and found in skin covering most of the body. They are also involved in regulation of body temperature as sweat evaporates from skin.

Eccrine

Which of the following best describes the events occurring at point B in the diagram of deep wound healing shown below?

Epithelium is migrating across wound.

Which is the most common form of skin cancer?

Basal Cell Carcinoma

Darker skin is the result of a(n):

Increased melanin production by melanocytes

In this phase of would healing a blood clot temporarily unites the edges of the wound and blood vessels dilate so neutrophils can enter to clean up the area.

Inflammatory

The majority of the epidermis is made up of _________.

Keratinocytes

White hair is the result of a lack of ________.

Melanin

The buildup of bilirubin in an infant's blood can occur if the liver does not remove the chemical causing the skin to appear yellow. This condition is

jaundice

Which type of epithelium makes up the epidermis?

keratinized stratified squamous

Which feature(s) of the skin protect(s) us against microbes such as bacteria?

All of these are correct

In this phase of would healing the clot forms a scab; epithelial cells migrate into scab; fibroblasts also migrate to start scar tissue; and pink granulation tissue contains delicate new blood vessels.

Migratory

A skin graft would be used for an injury when the ______ was destroyed.

Stratum Basale

Three to five rows of clear, flat dead keratinocytes, present only in thick skin of the fingertips, palms, and soles is called:

Stratum Lucidum

In addition to a thicker stratum corneum and the presence of a stratum lucidum, the thick skin of the palms and fingertips of the hands and of the soles of the feet have a denser array of sense receptors than thinner skin found elsewhere on the body, and also is hairless.

True

In deep wound healing, an injury has penetrated through to the dermis or even the hypodermis (subcutaneous layer). In this type of wound, the healing process will leave a scar and could involve a loss of some functionality of the area of the wound.

True

Wounds that only damage the epidermis won't bleed because the epidermis is avascular.

True

The skin is also known as a (the) _________.

cutaneous membrane