Unit 2 - Chapter 6

pressure vibration cold

Among the stimuli detected by the sensory receptors of the skin are ____________.

simple, coiled, tubular

Apocrine sweat glands are classified as _____________ glands.

selectively

Because skin can absorb certain chemicals and block others, it is described as __________ permeable.

stratified, squamous

Classify the tissue type of the epidermis: keratinized __________ ____________ epithelium.

spinosum granulosum

Epidermal dendritic cells are found in which of the following strata? Choose all that apply.

vasodilate/close

If the body is too warm, the dermal blood vessels __________ so more blood can travel _____ to the surface and excess can be lost.

stem, thinner

In aging skin, the reduced _______ cell activity in the epidermis results in ______ skin that is less likely to protect against mechanical trauma.

vellus

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

basal mesenchyme

In the development of embryonic skin, the _______ layer gives rise to the epidermis, and the _________ gives rise to the dermis.

fibrosis regeneration

In what two ways are damaged skin tissues normally repaired?

dermis, epidermis

Nerve fibers in the skin monitor sensory receptors in the ___________ and ____________.

stratum basale

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

collagen

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.

keratinocytes , keratin

The most numerous cells of the epidermis are ________________ and the protein they produce is called ___________.

True

The reason the cells of the stratum spinosum have a spiny appearance when viewed under a microscope is due to shrinkage of the cytoplasm.

dead, living

The root and shaft of the hair is ______ while the bulb of the hair is _______.

sweat, sebaceous

The skin houses two types of general exocrine glands, which are _________ glands and ____________ glands.

desmosomes

The spiny appearance of stratum spinosum cells is primarily due to the tenacious nature of ___________, which function to hold these non-dividing cells together.

As a person ages, the skin undergoes what change?

The subcutaneous tissue loses adipose tissue

melanocytes

The ultraviolet rays in sunlight are prevented from penetrating to the deeper dermis layer by specialized cells called _____________.

decrease, less

Vasoconstriction means that the diameter of the vessels __________, so relatively __________ blood can travel through them.

sensory nerve

When compressed, tactile cells release chemicals that stimulate _______________ endings in the dermis.

Friction ridges

______________ are located on the fingers, palms, soles and toes are formed from large folds and valleys on both the dermis and epidermis.

sebum

lubricates the epidermis and hair and helps make the integument water resistant.