Integumentary System

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The papillary and reticular layers of the dermis are composed mainly of ____________. A. connective tissue B. keratinocytes C. melanocytes

A. connective tissue

Similar to hair, nails grow continuously throughout our lives. Which of the following is furthest from nail growth center? A. nail root B. eponychium C. nail bed D. hyponychium

D. hyponychium

Which of the following is not a function of the hypodermis? A. source of blood vessels in the epidermis B. helps maintain body temperature C. site to long-term energy storage D. protects underlying organs

A. source of blood vessels in the epidermis

As you are walking down the beach, you see a dead, dry, shriveled-up fish. Which layer of epidermis keeps you from drying out? A. stratum corneum B. stratum granulosum C. stratum spinosum D. stratum basale

A. stratum corneum

Sebaceous glands ______________. A. release a watery solution of salt and metabolic waste B. are associated with hair follicles C. are a type of sweat gland D. may function in response to touch

B. are associated with hair follicles

In response to stimuli from the sympathetic nervous system, the arrector pili _________. A. secrete sebum B. are responsible for goose bumps C. are glands on skin surface D. can lead to excessive sweating

B. are responsible for goose bumps

The papillary layer of the dermis is most closely associated with which layer of the epidermis? A. stratum corneum B. stratum basale C. stratum granulosum D. stratum spinosum

B. stratum basale

Collagen lends ________ to the skin A. color B. structure C. elasticity D. UV protection

B. structure

Eccrine sweat glands __________________. A. are present on hair B. produce sebum C. are present in the skin throughout body and produce watery sweat D. act as a moisturizer

C. are present in the skin throughout body and produce watery sweat

In general, skin cancers ___________. A. are easily treatable and not major health concern B. occur due to poor hygiene C. can be reduced by limiting exposure to sun D. affect only the epidermis

C. can be reduced by limiting exposure to sun

One of the functions of integumentary system is protection. Which of the following doesn't directly contribute to that function? A. Merkel cells B. desmosomes C. folic acid synthesis D. stratum lucidum

C. folic acid synthesis

Langerhans cells are commonly found in the ______________. A. stratum corneum B. stratum basale C. stratum spinosum D. stratum granulosum

C. stratum spinosum

In humans, exposure of skin to sunlight is required for _______________. A. thermoregulation B. folate production C. vitamin D synthesis D. arteriole constriction

C. vitamin D synthesis

If you cut yourself and bacteria enter the wound, which of the following cells would help get rid of the bacteria? A. Merkel cells B. melanocytes C. keratinocytes D. Langerhans cells

D. Langerhans cells

An individual using a sharp knife notices a small amount of blood where he cut himself. Which of the following layers of skin did he have to cut into in order to bleed? A. stratum basale B. stratum corneum C. stratum granulosum D. papillary dermis

D. papillary dermis


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