A&P 1 CH 5: INTEGUMENTARY SYSTEM (QUESTIONS)
Apocrine sweat glands _____. -are smaller and more numerous than eccrine glands -begin functioning puberty -make watery secretions that are deficient in fats and proteins -are unable to carry out exocytosis
begin functioning puberty
Terminal hair is located in all of the following areas EXCEPT the __________. -face of adult males -scalp of males and females -body hair of females -axillary regions of adult males -pubic region of adult males
body hair of females (vellus)
Ceruminous glands
cerumen
The reticular layer of the dermis is composed of which tissue type?
dense irregular connective tissue
Follicles that give rise to eyebrows remain active longer than follicles of the scalp (true/false?)
false
For humans, food is the only source of vitamin D (true/false?)
false
Keratin protects the skin from the damaging effects of ultraviolet (UV) radiation (true/false?)
false
If dermal papillae were missing, then _____.
friction ridges would be absent
If an individual were unable to produce sebum, what problem would he or she most likely develop?
he or she would have brittle, more easily broken hair
Adipose tissue is concentrated in which of the following layers? -papillary layer of the dermis -hypodermis -stratum lucidum -stratum corneum -stratum basale
hypodermis
Which of the following is NOT strictly a component of the integumentary system? -epidermis -hypodermis -sudoriferous glands -dermis -hair
hypodermis
The epidermis is composed of which of the following tissues?
keratinized stratified squamous epithelial tissue
Mammary glands
milk
Sebaceous glands are located in all of the following areas EXCEPT the __________. -axillary regions -palms and soles -brachial regions -scalp -abdominal region
palms and soles
Keratinocytes in the stratum spinosum are known as __________.
prickle cells
The role of ceruminous glands is to _____.
produce earwax
Keratinocytes
production of fibrous protein for skin protection
Which of the following is NOT a function of the skin? -preventing unnecessary water loss -regulation of body temperature -excretion -protection -respiratory gas exchange
respiratory gas exchange
Sebaceous glands
sebum
Tactile (merkel) cells
sensory detection
Sebaceous glands belong to which of the following classes? -simple branched alveolar -compound tubuloalveolar -compound tubular -simple alveolar -simple coiled tubular
simple branched alveolar
Hypodermis
skin anchoring
Which layers of the skin is avascular and relies on capillaries in the underlying connective tissue to provide nutrients?
stratum basale
What is the correct sequence of epidermal layers of thick skin, from deep to superficial?
stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum
Which layer of the epidermis is the thickest skin strata?
stratum corneum
Which of the following statements is NOT true of apocrine sweat glands and sebaceous glands? -they are both composed of epithelial tissue. -they are both widely distributed over most of the body. -they both typically secrete their contents into hair follicles. -they are both exocrine glands. -their function increases at puberty.
they are both widely distributed over most of the body
What is the primary function of melanin?
to provide protection against the sun's UV rays
Keratin is found in hair and nails (true/false?)
true
Which of the following statements is FALSE? -There are substances in sweat that can kill bacteria. -Skin does not have a role in regulating body temperature. -Skin acts as a biological barrier. -Low pH of the acid mantle protects the skin.
Skin does not have a role in regulating body temperature
Dendritic (langerhands) cells
activation of the immune system
Which integumentary gland is believed to function as a sexual scent gland?
apocrine sudoriferous gland
Which of the following structures are primarily responsible for fingerprints? -reticular layer and sweat pores -epidermal ridges and sweat pores -sweat pores and dermal ridges -dermal ridges and epidermal ridges -papillary layer and epidermal ridges
epidermal ridges and sweat pores
An injection is administered through the skin using a hypodermic needle. Identify the first integumentary structure through which the needle will pass.
epidermis
The region deep to the skin is the _____.
hypodermis
One main difference between thin skin and thick skin is that _____.
in thin skin, the stratum lucidum appears to be absent
Which of the following cells would NOT be present in the dermis? -macrophages -neutrophils -mast cells -keratinocytes -fibroblasts
keratinocytes
Which of the following epidermal components possess(es) a waterproofing glycolipid that functions in preventing water loss? -lamellar granules -tonofilaments -keratin -keratohyaline granules -melanin
lamellar granules
Which of the following cells is part of the immune system? -merkel cell -langerhans cells -melanocyte -keratinocyte
langerhans cell (fixed macrophage)
What is the only pigment synthesized in the skin?
melanin
Which of the following cells function as sensory receptors for touch? -merkel cells -langerhans cell -melanocytes -keratinocytes
merkel cells
Melanin
protection from ultraviolet (UV) radiation
Which of the following strata is NOT visible as a distinct layer in thin skin?
stratum lucidum
Sudoriferous glands
sweat
The epidermis develops from which embryonic germ layer? -endoderm -intraderm -mesoderm -ectoderm -periderm
ectoderm
