Human Anatomy: Chapter 5 Integumentary System

_____ 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

Nails and hair are components of the integumentary system.

True

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

alopecia

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

areolar and dense irregular

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

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

collagen, stress

Another name for the skin is the ______ membrane.

cutaneous

The exposed parts of nails and hair are composed of ______, keratinized cells.

dead

Skin becomes drier and sometimes scaly because of ______ diminishes the amounts of natural skin lubricants.

decreased sebaceous gland activity

The reticular layer contains ______.

dense irregular connective tissue

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

dermis and epidermis

he structures of the integumentary system are derived from the ______ germ layers

ectodermal and mesodermal

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

epidermal ridges

Second-degree burns involve the ______ and part of the ______.

epidermis, dermis

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

epidermis, dermis

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

fingerprints

Excessive hair growth is called ______.

hirsutism

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

hypodermis

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

lanugo, vellus

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

lunula

The accessory organs of the epidermis are hair, ______, ______ glands and sweat glands.

nails, sebaceous

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

oily

Hair is found almost everywhere on the body except the ______.

palms of the hands, lips, soles of feet

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

papillary

On many parts of the body, the components of the dermis include blood vessels, ______ glands, ______ glands, hair follicles, nail roots, sensory nerve endings, and smooth muscle tissue.

sweat, sebaceous

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

transepidermal

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

vellus

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

vellus

The combination of periderm and sebum comprise a waterproof coating called the ______.

vernix caseosa

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

2

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

2-4

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

3-5

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

8

There are no blood vessels in the epidermis. The term for lack of blood vessels is ______.

Avascular

Nerve fibers in skin control ______. Select all that apply.

Blood flow, gland secretion rates

The main structural components of the reticular layer is primarily a network of ______ fibers that extend internally from the reticular layer of the dermis into the underlying subcutaneous layer.

Collagen

Which are functions of the subcutaneous layer? Select all that apply.

Energy reservoir, Protection, Thermal insulation

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.

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

Keratin

Which describes the tissue type of the epidermis?

Keratinized stratified squamous epithelium

Which type of hair is associated with the fetus?

Lanugo

______ cuts to the lines of cleavage often results in slow healing and increased scarring.

Perpendicular