Skin

Melanosomes are transferred to keratinocytes in the stratum basale via the process of ______ or exocytosis.

phagocytosis

In anatomy, a single hair is also called a(n) ______.

pilus

The secretion produced by apocrine sweat glands is viscous, cloudy, and composed of ______ that are acted upon by bacteria, producing a distinct, noticeable odor.

proteins and lipids

In the third step of wound healing, the cut blood vessels ______ and grow in the wound.

regenerate

The secretion from merocrine sweat glands are carried to the surface of the epidermis via ______. The secretions of apocrine sweat glands are carried into __________.

sweat ducts, hair follicules

_____ hair is the type of hair that grows on the scalp, and is also the hair of eyebrows and pubic region. In men, it also grows on the face.

terminal

Differences in hair density are due primarily to differences in its ______ and ______.

texture and pigmentation

At puberty, terminal hair replaces ______ hair in the armpits and pubic regions of the body.

vellus

The ______ layer of the dermis contains areolar connective tissue and dermal papillae.

papillary

What are the three phases of the hair growth cycle?

act

Which best describes the differences between sensible and insensible perspirations produced by sweat glands in the skin?

Insensible is in the form of water vapor and cannot be seen while sensible contains water and salts and can be seen.

True or false: The epidermis exhibits variations among different body regions within a single individual, as well as differences between individuals.

true

The layer of the skin from which most new epidermal cells are derived from is the ______.

basale

Anagen is the longest part of the growth cycle and lasts from about ______ months to as much as ______ years, depending on the genetics of the person.

18/7

Migration of a keratinocyte from the stratum basale to the stratum corneum takes about _____ weeks.

2 weeks

Healing of second degree burns takes approximately ______ weeks, and slight scarring may occur.

2-4

The catagen phase is a very short phase and lasts for about ______ weeks

3-4

The telogen phase of the hair growth cycle lasts for about ______ months.

3-4

Which pigments contribute to skin color? Select all that apply. Multiple select question.

Carotene Hemoglobin Melanin

Which of the following is NOT a function of the skin?

Synthesis of red blood cells

Which are functions of the subcutaneous layer?

Thermal insulation Energy reservoir Protection

Hair loss that is normally the result of aging is called ______.

alopecia

The active growing phase of the hair growth cycle is called the ______ phase.

anagen

The two types of connective tissue in the dermis are ______.

areolar and dense irregular

Place the following layers of thin skin in order from superficial to deep.

cgsb

Another name for the skin is the ______ membrane.

cutaneous

The reticular layer of the dermis is ______.

deep to the papillary layer

Nerve fibers in the skin monitor sensory receptors in the ______.

dermis and epidermis

Merocrine sweat production ______ during the aging process

diminishes

In the second step of wound healing, a blood clot temporarily patches the ______ of the wound together and acts as a barrier to prevent the entry of ______ into the body.

edges, pathogens

The dermal papillae interlock with deep projections of the epidermis called ______.

epidermal ridges

There are two types of melanin, _________ and pheomelanin, together they produce various ratios of yellow, reddish, tan, brown, and black shades.

eumelanin

Sebaceous glands are classified as ______ glands that discharge an oily, waxy secretion called ______.

holocrine, sebum

The subcutaneous layer is also known as the ______ or superficial fascia.

hypodermis

The whitish semilunar area of the proximal end of the nail body is called the ______.

lunula

Sebaceous glands produce (an) ______ material that coats hair shafts and the epidermal surface

oily

The epidermis of thin skin ranges in thickness from ______ millimeters to ______ millimeters thick

0.075, 0.150

The skin is made up of two distinct layers, the _____ and the _____.

epidermis, dermis

Third-degree burns involve the ______, dermis, and ______ layer, which often are destroyed.

epidermis, subcutaneous

Friction ridges on the tips of fingers are known as ______. Multiple choice question.

fingerprints

Which type of hair is associated with the fetus? Multiple choice question.

lanugo

During our lives, we produce three kinds of hair, which are ______ and terminal hair.

lanugo, vellus

PIgment producing cells of the epidermis are ______.

melanocytes

Nerve fibers in skin control ______.

blood flow gland secretion rates

A hemangioma is a congenital anomaly that results in skin discoloration due to ______ that proliferate and form a benign tumor.

blood vessels

In the nails, the lunula appears whitish because a thickened underlying stratum basale obscures the underlying ______.

blood vessels

Lines of cleavage (or tension lines) in the skin relate to the predominant orientation of ______ fiber bundles.

collagen

The specific orientation of ______ fiber bundles in the dermis is a result of the direction of applied ______ during routine movements.

collagen, stress

The cells of the stratum corneum contain large amounts of the protein called ______.

keratin

Melanin is transferred in membrane-bound vesicles from _____ to keratinocytes in the stratum basale.

melanocytes

The secretions of sebaceous glands, called ______ is usually deposited into a ______.

sebum, hair follicle

The skin is said to be ______ because some materials are able to pass through it.

selectively permeable

There are three main variations in the epidermis. These variations are ______, ______, and skin markings.

thickness, coloration

Metabolic regulation is a function of the integument.

true

Nails and hair are components of the integumentary system.

true

Skin is classified as either thick or thin based on two parameters. These are the number of ______ in the epidermis and the relative thickness of the epidermis, rather than the thickness of the entire integument.

layers

The major function of merocrine sweat glands is ______

thermoregulation

Under normal conditions, some interstitial fluids slowly escape through the epidermis via a process called ______ water loss.

transepidermal

In children, ______ is the primary human hair and is found on most of the body.

vellus

Since there are no blood vessels in the epidermis, where does its supply of nutrients come from?

Blood vessels in dermis

The epidermis of thick skin ranges from 0.4mm to ______ mm thick.

0.6

Which describes the tissue type of the epidermis?

Keratinized stratified squamous epithelium

In first degree burns, the healing time averages about _____ days, and typically no scarring results.

3-5

Keratinocytes of the epidermis are usually present for about ____ week(s).

4

On a normal scalp, about _______% of follicles are in the anagen phase.

80-95

The integument accounts for about _____% of the body weight.

8

Which layer is the most superficial in the epidermis?

Stratum corneum