Chapter 5 Review Questions
As you are walking down the beach, you see a dead, dry, shriveled-up fish. Which layer of your epidermis keeps you from drying out?
a. stratum corneum
Langerhans cells are commonly found in the ____.
a. stratum spinosum
In humans, exposure of the skin to sunlight is required for ____.
a. vitamin D synthesis
Sebaceous glands ____.
b. are associated with hair follicles
Eccrine sweater glands ____.
b. are present in the skin throughout the body and produce watery sweat
Similar to the hair, nails grow continuously throughout our lives. Which of the following is furthest from the nail growth center?
b. hyponychium
After a skin injury, the body initiates a wound-healing response. The first step of this response is the formation of a blood clot to stop bleeding. Which of the following would be the next response?
b. increased production of connective tissue
Collagen lends ________ to the skin.
b. structure
If you cut yourself and bacteria enter the wound, which of the following cells would help get rid of the bacteria?
c. Langerhans cells
Bedsores _______.
c. are preventable by eliminating pressure points
Which of the following is not a function of the hypodermis?
c. source of blood vessels in the epidermis
The hair matrix contains ____.
d. a layer of basal cells
An individual has spent too much time sun bathing. Not only is his skin painful to touch, but small blisters have appeared in the affected area. This indicates that he has damaged which layers of his skin?
d. epidermis and dermis
The papillary layer of the dermis is most closely associated with which layer of the epidermis?
d. stratum basale
In response to stimuli from the sympathetic nervous system, the arrestor pilli ____.
c. are responsible for goosebumps
In general, skin cancers _____.
c. can be reduced by limiting exposure to the sun
The papillary and reticular layers of the dermis are composed mainly of ____.
c. connective tissue
One of the functions of the integumentary system is protection. Which of the following does not directly contribute to that function?
c. folate production
Squamous cell carcinomas are the second most common of skin cancers and are capable of metastasizing if not treated. This cancer affects which cells?
c. keratinocytes of the stratum spinosum
An individual using a sharp knife notices a small amount of blood where he just cut himself. Which of the following layers of skin did he have to cut into in order to bleed?
c. papillary dermis