FREE BIOLOGY AND STUDY GAMES ABOUT CHAPTER 6 A

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FREE BIOLOGY AND STUDY GAMES ABOUT CHAPTER 6 A

& P EXAM QUESTIONS Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -123 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: hair root

Answer:

the portion of hair embedded in skin

Question 2: Aging skin affects

Answer:

• appearance

• temperature regulation

• vitamin D production

Question 3: Skin becomes drier

Answer:

because sebaceous glands produce less oil

Question 4: When sweat evaporates

Answer:

it carries heat away from the skin surface

Question 5: If dermal blood vessels are dilated

Answer:

more blood enters skin and skin appears pinkish or reddish

Question 6: During physical activity

Answer:

active muscles release heat, which the blood carries away

Question 7: rate of cell division increases

Answer:

where the skin is frequently rubbed or pressed

Question 8: When blood is well oxygenated

Answer:

the blood pigment hemoglobin is bright red and the skin of light-complexioned people appears pink

Question 9: Sebaceous glands (continued)

Answer:

• not found on palms and soles

• open directly onto the surface of the skin in some regions, such as the lips, corners of the mouth, and

parts of the external reproductive organs

Question 10: Meissner's corpuscles

Answer:

stimulated by light touch

Question 11: Environmental factors

Answer:

• sunlight, ultraviolet light from sunlamps, and X-rays affect skin color

• stimulate melanocytes to produce more pigment and transfer it to nearby epidermal cells within a few

days

Question 12: Apocrine glands

Answer:

• become active at puberty

• can wet certain areas of skin when a person is nervous or stressed.

• most numerous in the axillary regions, groin, and around the nipples

Question 13: A homograft

Answer:

a graft from a cadaver

Question 14: A first degree burn

Answer:

one that only affects the epidermis

Question 15: higher risk for developing hypothermia

Answer:

Elderly, very thin individuals, homeless and the very young

Question 16: Differences in skin color

Answer:

• result from the differences in the amount of melanin melanocytes produce

• The more melanin produced, the darker the skin

• The distribution and size of pigment granules within melanocytes

Question 17: Melanin

Answer:

• provides skin color

• absorbs UV radiation

Question 18: adipose tissue of the subcutaneous layer

Answer:

insulates the body

Question 19: Sebum

Answer:

• a mixture of fatty material and cellular debris

• secreted into hair follicles and helps keep hair and skin soft, pliable and waterproof

Question 20: stratum basale

Answer:

• deepest layer of the epidermis

• nourished by blood vessels in the dermis

• Cells can divide and grow because they are nourished so well

Question 21: If dermal blood vessels are constricted

Answer:

more blood enters the dermis, and causes reddening the skin of a light-complexioned person

Question 22: The dilated blood vessels

Answer:

provide the tissues with more nutrients and oxygen, which aids healing

Question 23: Hyperthermia

Answer:

a rise in body temperature

Question 24: When body temperature falls below the set point

Answer:

muscles of dermal blood vessels constrict which decreases the flow of blood through the skin.