A&P 1 Lab: Chapter 6

in what two ways are damaged skin tissues normally repaired?

1) fibrosis 2) regeneration

When skin has been damage, which integumentary system components are NOT repaired?

1) nerves 2) exocrine glands 3) hair follicles

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.

1) sweat 2) sebaceous

healing of second degree burn take approximately ______ weeks, and slight scarring may occur.

2-4

keratinocytes of the epidermis are usually present for about _______ week(s)

4

Potential complications of a wound under repair include _______ loss and _____.

Fluid, infection

the vascular connective tissue that initially forms in a healing wound is called _______.

Granulation Tissue

the cells of the stratum corneum contain large amounts of the protein

Keratin

to reduce the likelihood of skin cancer, people should use sunscreen regularly and avoid ________.

Prolonged exposure to the sun

Nail Matrix is ________.

actively growing part of the nail

axillary, anal, areolar, and pubic regions

apocrine

first step of wound healing, cut blood vessels release _____ into the wound.

blood

there are two types of hemangiomas, _______ and _________.

capillary and cavernous

external acoustic meatus

ceruminous (ear)

the predominant type of protein fiber found in the dermis is ________.

collagen

in the dermis of the skin, ______ fibers impact tensile strength while ______ fibers allow some stretch

collagen and elastic

in thick skin, the layers of the epidermis that contain dead keratinocytes are the stratum lucidum and stratum ________.

corneum

nails are derived from the same type of cells that produce the stratum ______ layer of the epidermis.

corneum

the ______ contain(s) the capillaries that supply nutrients to the cells of the epidermis

dermal papillae

nerve fibers in the skin monitor sensory receptors in the ______ and ______.

dermis and epidermis

the nails, hair, and exocrine glands of the skin are known as ________.

epidermal appendages

epidermal dendritic cells are found in which of the following strata?

granulosum and spinosum

within the stratum granulosum begins a process called _______.

keratinization

the most numerous cells of the epidermis are _______ and the protein they produce is called _______.

keratinocytes keratin

mammary glands only become functional in which of the following.....

lactating females, pregnant females

During our lives, we produce three kinds of hair:

lanugo, vellus, terminal

breasts

mammary glands

distributed throughout body

merocrine

a nevus is commonly referred to as a ________. it is a harmless, localized growth of ________ forming cells.

mole, melanin

during the process of keratinization, the cell's ______ and organelles of the cells disintegrate and the cells start to die.

nucleus

the main functions of melanin pigment is to protect the ________ of keratinocyes from UV radiation

nucleus

in anatomy, a single hair is also called a(n) ________.

pilus

the connective tissues fibers of the ______ layer of the dermis are extensively interwoven with those of the ______ layer to stabilize the position of the skin and bind it to the underlying tissues

reticular, subcutaneous

the hair follicle is an oblique tube that surrounds the hair _______.

root

associated with hair follicles over much of the skin

sebaceous

Because skin can absorb certain chemicals & block others, it is described as _____ permeable.

selectively

because skin can absorb certain chemicals and block others, it is described as _______ permeable.

selectively

sebaceous glands are activated primarily by _______ during puberty in both sexes

sex hormones

skin is classified as either thick or thin based on two parameter; the number of epidermal ________ in the epidermis and the relative _______ of the epidermis, rather than the thickness of the entire integument

strata, thickness

the _______ of the integument has immune cells.

stratum spinosum/ dermis

the major function of merocrine sweat gland is _______.

thermoregulation

there are three main variations in the epidermis. these variations are _______, coloration, and skin markings.

thickness

the release of water vapor from sweat glands when we are not sweating is a process called ______.

transpiration

True or False: the epidermis and dermis together secrete and absorb materials and play a role in immunity.

true