Human Anatomy McGraw-Hill Ch 5
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
Since there are no blood vessels in the epidermis, where does its supply of nutrients come from?
blood vessels in the dermis
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
The predominant type of protein fiber found in the dermis is ______.
collagen
The specific orientation of ______ fiber bundles in the dermis is a result of the direction of applied ______ during routine movements.
collagen, stress
In male pattern baldness, hair is first lost mainly from the ______ region of the scalp.
crown
The exposed parts of nails and hair are composed of ______, keratinized cells.
dead
The reticular layer of the dermis is ______.
deep to the papillary layer
Epidermal accessory organs are located in the ______ and may project through the ______ to the surface of skin.
demis, epidermis
The reticular layer contains ______.
dense irregular connective tissue
Nerve fibers in the skin monitor sensory receptors in the ______.
dermis and epidermis
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
First-degree burns involve only the ______ and are characterized by ______, pain, and slight edema (swelling).
epidermis, redness
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
Which type of hair is associated with the fetus?
lanugo
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
Sebaceous glands produce (an) ______ material that coats hair shafts and the epidermal surface
oily
The ______ layer of the dermis contains areolar connective tissue and dermal papillae.
papillary
______ cuts to the lines of cleavage often results in slow healing and increased scarring.
perpendicular
What are the differences between sensible and insensible perspiration produced by sweat glands on the skin?
sensible: visible, contains water and salts insensible: invisible, water vapor
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
The skin houses two types of general exocrine glands, which are ________ glands and _______ glands.
sweat, sebaceous
Under normal conditions, some interstitial fluids slowly escape through the epidermis via a process called ______ water loss.
transepidermial
In children, ______ is the primary human hair and is found on most of the body.
vellus
Nerve fibers in skin control ______.
-gland secretion rates -blood flow
Which are functions of the subcutaneous layer?
-thermal insulation -protection -energy reservoir
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
Keratinocytes of the epidermis are usually present for about ____ week(s).
4
The integument accounts for about ______ % of the body weight
7-8%
True or false: Hair is normally found on the palms of the hand.
False
Which describes the tissue type of the epidermis?
Keratinized stratified squamous epithelium
