Ant 1 Unit 1 MCQB # Chapter 4

185) The causes of a burn on the skin include which combination of the following? (1) exposure to heat (2) exposure to radiation (3) electrical shock (4) chemical agents (5) extensive exposure to the sun at midday (a) 2, 4, 5 (b) 2, 3, 4, 5 (c) 1, 2, 3, 4, 5 (d) 3, 5 (e) 1, 3

...(c) 1, 2, 3, 4, 5

174) Functions of sebum include which combination of the following? (1) lubricating the skin (2) cooling the skin (3) inhibiting the growth of bacteria on the skin (4) sensing pressure on the surface of the skin (5) promoting the production of new skin cells (a) 1, 2 (b) 4, 5 (c) 1, 3 (d) 1, 2, 3 (e) 2, 4, 5

...(c) 1, 3

150) The epidermis in a section of thick skin includes the following five layers. In what order do these occur, from the basement membrane to the surface? (1) stratum basale (2) stratum lucidum (3) stratum corneum (4) stratum germinativum (5) stratum spinosum (a) 5, 4, 3, 2, 1 (b) 1, 3, 5, 4, 2 (c) 3, 2, 5, 4, 1 (d) 1, 2, 3, 4, 5 (e) 4, 5, 1, 2, 3

...(e) 4, 5, 1, 2, 3

170) Which of the following is (are) not present in the skin on the palms? a) apocrine sweat glands b) stratum lucidum c) sudoriferous glands d) Merkel cells e) keratin

...a) apocrine sweat glands

178) The cells in a hair follicle that are responsible for forming the hair are a) matrix cells. b) medullary cells. c) cortical cells. d) Merkel cells. e) papillary cells.

...a) matrix cells.

161) The hypodermis is important in a) stabilizing the position of the skin in relation to underlying tissues. b) preventing unacceptable water losses through the skin. c) connecting the dermis to the epidermis. d) all of the above. e) A and B only.

...a) stabilizing the position of the skin in relation to underlying tissues.

187) Why is the skin capable of repair, even after serious damage? a) All layers of the skin have an excellent blood supply. b) Stem cells persist in both the epidermis and dermis. c) Construction of scar tissue is easier than making normal skin. d) Individual skin cells have a high metabolic rate. e) Both C and D are true.

...b) Stem cells persist in both the epidermis and dermis.

157) The blood supply to the skin is called (the) a) hypodermis. b) cutaneous plexus. c) venous anastomosis. d) brachial plexus. e) none of the above.

...b) cutaneous plexus.

172) When people experience conditions of high environmental temperatures and humidity, a) even if they do not overexert they will have sore muscles and feel tired. b) their bodies are cooled primarily by the merocrine sweat glands. c) they feel increasingly energetic as their skin surface becomes warmer. d) they can become hydrated from absorbing water vapor from the air. e) none of the above will occur.

...b) their bodies are cooled primarily by the merocrine sweat glands.

154) Cells in the stratum germinativum that are used as sensory receptors are called a) melanocytes. b) keratinocytes. c) Merkel cells. d) Langerhans' cells. e) stem cells.

...c) Merkel cells.

163) Which of the following is an epidermal structure? a) arrector pili muscle b) root hair plexus c) hair follicle d) blood vessels e) lamellated corpuscle

...c) hair follicle

183) Which of the following terms refers to fine hairs grown on the fetus? a) vernix b) vellus c) lanugo d) intermediate e) terminal

...c) lanugo

159) Specialized sensory receptors in the skin include all of the following except a) Ruffini corpuscles. b) lamellated corpuscles. c) melanocytes. d) Merkel cells. e) tactile corpuscles.

...c) melanocytes.

166) Which of the following is not an accessory structure of the integument? a) sebaceous glands b) sweat glands c) teeth d) nails e) hair

...c) teeth

155) Sensory structures in the epidermis responsible for monitoring light touch are called a) lamellated corpuscles. b) free nerve endings. c) Langerhans' cells. d) Merkel cells. e) all of the above.

...d) Merkel cells.

164) Nerve fibers in the skin are found in which of the following layers? a) epidermis b) reticular layer c) papillary layer d) all of the above e) none of the above

...d) all of the above

186) In older individuals, wrinkling of the skin occurs because of a) thinning of the dermis. b) loss of subcutaneous fat. c) exposure to ultraviolet radiation. d) all of the above. e) A and C only.

...d) all of the above.

176) What does a ceruminous gland secrete? a) odorous sweat b) watery sweat c) sebum d) ear wax e) milk

...d) ear wax

152) The keratinized stratified squamous epithelium of the skin is called (the) a) hypodermis. b) dermis. c) papillary layer. d) epidermis. e) all of the above.

...d) epidermis.

165) The papillary layer of the dermis a) consists of loose connective tissue. b) contains capillaries and sensory neurons. c) has dermal papillae that project between the epidermal ridges. d) has all of the above attributes. e) does A and B only.

...d) has all of the above attributes.

153) The most abundant cells in the epidermis are a) Langerhans' cells. b) Merkel cells. c) melanocytes. d) keratinocytes. e) All of the above are in equal numbers.

...d) keratinocytes

177) The innermost, soft core of a hair shaft is the a) hard keratin. b) cortex. c) cuticle. d) medulla. e) soft keratin.

...d) medulla.

179) Which of the following parts of a hair are usually seen because they are located outside of the body? a) follicle, bulb, cuticle, cortex b) cortex, medulla, shaft c) hard keratin, bulb, root d) shaft only e) bulb, root, shaft

...d) shaft only

160) As cells are pushed from deeper layers of the epidermis toward the surface they a) receive a better nutrient supply. b) continue to divide. c) become dermal cells. d) start to die. e) do all of the above.

...d) start to die.

182) Hairs covering most of the general surface of the body are a) heavily pigmented hairs. b) intermediate hairs. c) terminal hairs. d) vellus hairs. e) none of the above.

...d) vellus hairs.

181) Differences in uncut hair length result from a) the quality of conditioning treatments received. b) duration of the hair growth cycle. c) variations in hair growth rate. d) variations in the thickness of individual hairs. e) both B and C.

...e) both B and C.

151) Which of the following cell types is not found in the epidermis? a) Langerhans' cell b) Merkel cell c) keratinocyte d) melanocyte e) fibroblasts

...e) fibroblasts

158) The area of the skin that contains the highest density of blood vessels is the a) reticular layer. b) hypodermis. c) stratum corneum. d) epidermis. e) papillary layer.

...e) papillary layer.

173) The physical mechanism responsible for blushing is a) decreased amounts of carotene. b) dilation of superficial blood vessels. c) an increased amount of melanin. d) cyanosis. e) none of the above.

b) dilation of superficial blood vessels.

169) The most widely distributed type of sweat gland on the body is (the) a) myoepithelial gland. b) merocrine sweat gland. c) ceruminous gland. d) apocrine sweat gland. e) none of the above.

b) merocrine sweat gland.

156) A hypodermic needle would penetrate the skin in which order? a) epidermis, reticular layer, papillary layer b) reticular layer, papillary layer, epidermis c) epidermis, papillary layer, reticular layer d) papillary layer, reticular layer, epidermis e) none of the above

c) epidermis, papillary layer, reticular layer

175) Sebaceous glands are often associated with a) merocrine sweat glands. b) apocrine sweat glands. c) hairs. d) nails. e) all of the above.

c) hairs.

167) Two types of sweat glands in the skin are a) adrenal and holocrine. b) sebaceous and merocrine. c) merocrine and apocrine. d) apocrine and endocrine. e) holocrine and endocrine.

c) merocrine and apocrine.

147) The integument a) contains approximately 5 million hairs, 98% of them on the head. b) has two tissue types, the epidermis and the dermis. c) participates in excretion. d) has five layers of epidermis in all areas. e) all of the above are correct.

c) participates in excretion.

168) Eccrine (merocrine) sweat glands a) are usually attached to hair follicles. b) are the same as apocrine glands. c) respond to elevated body temperature. d) release a substance with a noticeable odor e) are most common in the axilla.

c) respond to elevated body temperature.

149) The epidermis is composed of which type of epithelium? a) simple columnar b) simple squamous c) stratified squamous d) stratified cuboidal e) transitional

c) stratified squamous

184) Which factor contributes most to the determination of hair color in young people? a) age of the individual b) air bubbles in the medulla of the hair shaft c) the structure of the pigments produced by melanocytes at the papilla d) all of the above e) A and B only

c) the structure of the pigments produced by melanocytes at the papilla

171) Thermoregulation is provided by a) changing blood flow to the dermis. b) sensible perspiration. c) muscle contraction. d) all of the above. e) none of the above.

d) all of the above.

148) The integument is separated from the deep fascia around the other organs by (the) a) dermis. b) cutaneous membrane. c) epidermis. d) hypodermis. e) none of the above.

d) hypodermis.

180) At the end of a hair's growth cycle, the follicle does which of the following? a) becomes inactive b) becomes smaller c) loses connection to the hair matrix d) sloughs off the old hair when the cycle begins again e) all of the above

e) all of the above

162) Of the following structures, which is not covered or lined by the integumentary system? a) external auditory meatus b) anterior surface of the eyelids c) vaginal canal d) fingertip e) none of the above

e) none of the above