Chapter 6 learn smart

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The scalp normally loses between how many hairs per day

10-100

And what important way does a freckle differ from a nevus

A freckle is an area of excessive melanocyte activity/nevus is caused by an increase in melanocyte numbers

The memory glands of the breasts are modified____________ sweat glands

Apocrine

Two functions of the skin

Barrier to water loss Heat regulation

In the development of embryonic skin, the __________ layer gives rise to the epidermis, and the _______________ Gives rise to the dermis

Basal ; Mesenchyme

The first step of one healing cut blood vessel releases what into the wound

Blood

In the second step of wound healing what forms

Blood clot

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

Blood vessels

Each nail plate consists of a pinkish nail ______ and a distal whitish free ________

Body;edge

The three recognizable zones along the length of the hair are

Bulb, root, shaft

____________ Is it yellow orange pigment acquired from vegetables like carrots, corn and squash

Carotene

Keratinocytes in the epidermis produce _____________ when exposed to UV radiation

Cholecalciferol

Lines of cleavage in the skin identify the predominant orientation of ___________ fiber bundles in the dermis

Collagen

The predominant type of protein fiber found in the dermis is

Collagen

The word reticular means "network" and refers to the web like meshwork of ________ fibers

Collagen

The size of a hair follicle walls are organized into two principal concentric layers an outer ____________ tissue root sheath and an inner ____________ tissue root sheath

Connective ; epithelial

The dermis is ___________ to The epidermis and contains primarily________________

Deep ; collagen fibers

The epidermal ridges interdigitate with the

Dermal papilae

What contains the capillaries that supply nutrients to the cells of the epidermis

Dermal papilae

The nails, hair and exocrine glands of the skin or known as

Epidermal appendages

Second-degree burns involve the ______________ and part of the ___________

Epidermis ; dermis

Third-degree burns involve the _____________, dermis and _________________ Layer, which often are destroyed

Epidermis; Subcutaneous

First-degree burns involve only the __________ and are characterized by _____________ pain and slight Edema

Epidermis; redness

When the skin has been damaged what integumentary system components are not repaired

Exocrine glands Hair follicles Nerves

Apocrine and merocrine sweat glands release their secretory products by the process of ____________

Exocytosis

Cerumen, together with the tiny hairs along the ear canal, helps trap ___________________ or small ___________ and keeps them from reaching the eardrum

Foreign particles, insects

How long are keratinocytes of the epidermis usually present

Four weeks

Fingerprints are useful as a forensic tool because each individual has a unique pattern of

Friction ridges

The vascular connective tissue that initially forms in a healing wound is called

Granulation tissue

Epidermal Dendrid excels are found in which of the following strata

Granulosum and Spinosum

Normal skin color results from a combination of colors of __________ , melanin and carotene

Hemoglobin

During our lives we produce three kinds of hair what are they

Lanugo Vellus Terminal

Periderm

Layer of cells covering the developing embryonic epithelium

Mesenchyme

Layer of embryonic cells that develops into the dermis

Individual individual ages, skin repair process takes _________

Longer

In the third step of wound healing, _______________ within The wound begin to remove the clotted blood

Macrophages

At the nail root in the proximal end of the nail body the nailbed thickness to form the nail_______

Matrix

One exposed to the sun the _______________ become more active in secrete a protein that gives the skin a chance look

Melanocytes

Harris found almost everywhere on the body except the sides and _________ of the hands and fingers, the sides and __________ of the feet and toes, the lips and portions of external genitalia

Palms;soles

__________________ cuts to the lines of the cleavage often results in slow healing and increase scarring

Perpendicular

Cavernous hemangiomas, sometimes called ____ ____ stains, involve a large dermal _____ _______ in my last a lifetime

Port wine ; blood vessels

The apocrine sweat glands become active and produce secretory products during

Puberty

In the fourth step of wound healing, ______________ Of the epidermis occurs

Regeneration

What part of the dermis forms the deeper, major portion of the dermis and extends from the papillary layer to the underlying subcutaneous layer

Reticular layer

Sebaceous glands are activated primarily by______________During puberty in both sexes

Sex hormones

Merocrine sweat glands are classified as _________________________________ glands that release their secretion onto the surface of the skin

Simple, coiled, tubular

Repetitive mechanical stressors applied to the integument stimulate mitotic activity in the __________ cell of the stratum ____________

Stem; basale

And thin and thick skin the layers that contain living cells are

Stratum basel, Stratam Spinosun and stratum granulosum

Does secretion from Merocrine sweat glands are carried to the surface of the epidermis via ____________________. The secretions of the apocrine sweat glands are carried into _______________

Sweat ducts ; hair follicles

The skin house is two types of general exocrine glands, what are they

Sweat glands Sebaceous glands

differences in hair density are due primarily to differences in its

Texture and pigmentation

The major function of merocrine sweat glands is

Thermoregulation

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

Thickness

As a result of the aging process, Hair follicles produce

Thinner hairs

The delivery of drugs to the skin through the use of a patch is called what

Transdermal administration

T/F? Regeneration in the stand replace is damaged or dead cells with the same cell type in restores organ function

True

T/F? Skin cancer can develop and people of any age

True

T/F? The amount of melanin in their skin is determined by both heredity and light exposure

True

A puberty terminal hair replaces_______ hair in the armpits and pubic regions of the body

Vellus

The skin is best described as

Water resistant

vernix caseosa

Waterproof protective covering composed of sebum and sloughed off cells

The subcutaneous layer is also known as the

hypodermis

The color of hair is the result of

melanin production


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