Question 1

Free nerve endings of sensory neurons respond to ________.&#10;A) pain and temperature sensations&#10;B) deep pressure sensations&#10;C) light touch sensations&#10;D) Sensory neurons in the skin do not respond to stimuli.

Accepted Answer

Free nerve endings in the skin are responsible for detecting pain and temperature sensations, as they are not surrounded by specialized structures (such as Meissner's or Pacinian corpuscles) that respond to other types of stimuli like pressure or vibration.

Question 2

The protein that makes the skin water resistant is ________.&#10;A) melanin&#10;B) keratin&#10;C) elastin&#10;D) collagen

Accepted Answer

Keratin is the protein that makes the skin water-resistant. It is found in the outer layer of the skin, hair, and nails, and provides a protective barrier against environmental stressors. Melanin provides color to the skin and protects it from UV radiation, while elastin and collagen provide elasticity and support to the skin.

Question 3

Which of the following explains why tattoos are permanent?&#10;A) Tattoo ink is deposited into the epidermis. These skin cells shed over time.&#10;B) Tattoo ink is deposited into the hypodermis. Unlike the epidermis, cells in this region do not shed over time.&#10;C) Tattoo ink is deposited into the epidermis. Unlike the dermis, cells in this region do not shed over time.&#10;D) Tattoo ink is deposited into the dermis. Unlike the epidermis, cells in this region do not shed over time.

Accepted Answer

Tattoo ink is deposited into the dermis, which is a deeper layer of skin than the epidermis. Cells in the dermis do not shed over time, unlike cells in the epidermis which continuously renew themselves. This is why tattoos appear to be permanent.

Question 4

The skin is also known as the ________.&#10;A) epidermis&#10;B) dermis&#10;C) cutaneous membrane&#10;D) hypodermis

Accepted Answer

The skin is often referred to as the cutaneous membrane, as it is the outermost layer of the body that covers and protects the underlying tissues and organs. While the epidermis and dermis are layers within the skin, and the hypodermis is the layer of tissue beneath the skin, neither of these terms encompasses the entirety of the skin itself.

Question 5

The ________ is the white,crescent-moon-shaped region of the nail plate.&#10;A) nail bed&#10;B) phalanx&#10;C) lunula&#10;D) cuticle

Accepted Answer

The white, crescent-moon-shaped region of the nail plate is known as the lunula, which is located nearest to the nail root. The nail bed is the tissue underneath the nail plate, while phalanx refers to the bones of the fingers or toes. The cuticle, on the other hand, is the layer of skin that overlaps the base of the nail plate.

Question 6

The two regions of the skin are the ________.&#10;A) epidermis and dermis&#10;B) stratum basale and epidermis&#10;C) epidermis and hypodermis&#10;D) dermis and hypodermis

Accepted Answer

The epidermis and dermis are the two distinct layers of the skin, with the epidermis being the outermost layer and the dermis underneath it.

Question 7

Albinism is a condition characterized by the absence of skin pigment.Which of the following would be absent in this condition?&#10;A) collagen&#10;B) melanin&#10;C) keratin&#10;D) elastin

Accepted Answer

Melanin is responsible for giving color to the skin, hair, and eyes, and it is absent in albinism. Collagen, keratin, and elastin are proteins found in the skin, but they are not associated with skin pigmentation.

Question 8

The specialized cells that produce the pigment melanin are called ________.&#10;A) keratinocytes&#10;B) melanocytes&#10;C) lymphocytes&#10;D) stem cells

Accepted Answer

Melanocytes are specialized cells that produce the pigment melanin, which determines the color of our skin, hair, and eyes. Keratinocytes are skin cells that produce keratin, a protein that provides structure and protection to the skin. Lymphocytes are white blood cells that play a role in the immune system. Stem cells are undifferentiated cells that have the potential to develop into different types of cells in the body.

Question 9

The patterns found in fingerprints are produced by ________.&#10;A) projection of the dermal papillae into the epidermis&#10;B) projection of the hypodermis into the epidermis&#10;C) projection of the epidermis into the hypodermis&#10;D) projection of the hypodermis into the dermis

Accepted Answer

The patterns found in fingerprints are produced by the projection of the dermal papillae into the epidermis, causing ridges and grooves that form unique patterns.

Question 10

Contraction of the arrector pili muscles results in ________.&#10;A) secretion of eccrine sweat&#10;B) secretion of sebum&#10;C) the formation of goose bumps&#10;D) secretion of apocrine sweat

Accepted Answer

Contraction of the arrector pili muscles, which are attached to hair follicles, causes the hair to stand on end and results in the formation of goose bumps.

Question 11

The production of melanin is dependent on environmental exposure.Which of the following activities would trigger the production of melanin?&#10;A) sunbathing while on vacation in the Caribbean&#10;B) walking outside on a rainy, overcast day&#10;C) hanging out with friends while watching movies&#10;D) swimming in an indoor pool

Accepted Answer

The answer of The production of melanin is dependent on...

Question 12

When compared to thin skin,thick skin contains ________.&#10;A) four cell layers: the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum&#10;B) five cell layers: the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum&#10;C) three cell layers: the stratum basale, stratum spinosum, and dermis&#10;D) three cell layers: the stratum basale, stratum spinosum, and stratum corneum

Accepted Answer

The answer of When compared to thin skin,thick skin contains...

Question 13

Which of the following is NOT an accessory structure in the integumentary system?&#10;A) exocrine glands and hair follicles&#10;B) endocrine glands&#10;C) nails and exocrine glands&#10;D) hair follicles and nails

Accepted Answer

The answer of Which of the following is NOT an...

Question 14

Sebaceous glands produce ________,also known as skin oil.&#10;A) melanin&#10;B) sebum&#10;C) mucus&#10;D) sweat

Accepted Answer

The answer of Sebaceous glands produce ________,also known as skin...

Question 15

The ________ connects the skin to muscle that lies underneath.&#10;A) stratum basale&#10;B) dermis&#10;C) hypodermis&#10;D) epidermis

Accepted Answer

The answer of The ________ connects the skin to muscle...

Question 16

Perspiration cools the body by ________.&#10;A) the retention of water from merocrine sweat glands on the surface of the skin&#10;B) the evaporation of water from apocrine sweat glands on the surface of the skin&#10;C) the retention of water from apocrine sweat glands on the surface of the skin&#10;D) the evaporation of water from merocrine sweat glands on the surface of the skin

Accepted Answer

The answer of Perspiration cools the body by ________.&#10;A) the...

Question 17

The depth of tactile corpuscles corresponds to their function in that ________.&#10;A) given their localization in the papillary layer of the dermis, tactile corpuscles are appropriately situated to mediate the response to fine or light touch&#10;B) given their localization in the reticular layer of the dermis, tactile corpuscles are appropriately situated to mediate the response to fine or light touch&#10;C) given their localization in the papillary layer of the dermis, tactile corpuscles are appropriately situated to mediate the response to deep pressure sensations&#10;D) given their localization in the hypodermis, tactile corpuscles are appropriately situated to mediate the response to fine or light touch

Accepted Answer

The answer of The depth of tactile corpuscles corresponds to...

Question 18

________ sweat glands are activated to regulate an increase in body temperature.&#10;A) Dermal&#10;B) Apocrine&#10;C) Merocrine&#10;D) Sebaceous

Accepted Answer

The answer of ________ sweat glands are activated to regulate...

Question 19

The secretions of merocrine and apocrine sweat glands differ in that apocrine sweat ________.&#10;A) contains proteins that, when combined with bacteria on the surface of the skin, produce a distinct odor&#10;B) is composed of water and electrolytes and participates in the temperature regulation process&#10;C) is a secretion of eccrine sweat glands&#10;D) determines the amount of pigment proteins produced by skin cells

Accepted Answer

The answer of The secretions of merocrine and apocrine sweat...

Question 20

Malignant melanoma is a particularly dangerous form of skin cancer because ________.&#10;A) it may become aggressive, rapidly spread via the lymphatic system, and have a high mortality rate&#10;B) this type of cancer is most commonly localized to specific areas of the skin and rarely metastasizes&#10;C) exposure to UV rays from the sun cause the DNA in cells of the stratum basale to mutate&#10;D) slowly dividing melanocytes readily enter the lymphatic system

Accepted Answer

The answer of Malignant melanoma is a particularly dangerous form...

Deck 6: The Integumentary System