BIO 160 CH 4

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40 terms

A mucus membrane:

lines the digestive and respiratory tracts

A needle would pierce the skin of the forearm in which order?

1) stratum basale
2) stratum granulosum
3) stratum spinosum
4) stratum corneum
5) stratum lucidum


Correct Answer:
4, 2, 3, 1

As cells progress from the deeper portion of the epidermis towards the surface

they tend to die

Exposure to ultraviolet (UV) light causes the skin to darken by stimulating the production of:

melanin

Glands usually associated the skin of the genitals and the axillary region are known as

apocrine glands

Mitosis occurs in which layer of the epidermis?

stratum basale

Hair, nails, and the outer layer of the skin are made mostly of a tough waterproof protein called

keratin

In the skin, arrector pili muscles are found mainly in the

dermis layer

Pacinian corpuscles

are deep pressure sensitive receptors

Sebaceous glands secrete

oil

The different layers of the epidermis have one feature in common. This feature is the:

absence of blood vessels

The papillary layer attachs to the:

stratum basal and reticular layer

The structure that contracts to cause "goose bumps" is the:

arrector pili muscle

The toughened outer portion of the hair is termed the:

cuticle

The type of tissue making up the bulk of the dermis is:

dense (irregular) connective tissue

Two types of glands found in the skin are the _______ and _______ glands.

sudoriferous; sebaceous

When assessing the extent of burns on the body using the rule of nines, the anterior and posterior trunk represents about what percentage of the body?

36%

When you scratch your skin, what comes off as white flakes are mostly cells from the stratum:

corneum

Which of the following vitamins is synthesized in the skin?

vitamin D

You can cut your hair without feeling pain because:

the shaft of the hair consists of dead cells

A hair, produced by a hair follicle, is a type of _______ tissue

epithelial

All epithelial membranes have a layer of _______ underneath them.

connective tissue

Sebaceus glands are usually associated with

hair follicles

First and second-degree burns are referred to as _______ burns.

partial thickness

Most of the cells of the epidermis are:

keratinocytes

The cutaneous glands are all a type of _______ glands.

exocrine

The deepest layer of the epidermis is called the:

stratum basale

The dermis is abundantly supplied with _______ which play a role in maintaining body temperature homeostasis

blood vessels

The epidermis and dermis are normally firmly connected together. However a burn or friction may cause these layers to separate which results in a:

blister

The layer of the skin that is made of stratified squamous epithelium is called the _______.

epidermis

The protein found in large amounts in the stratum corneum cells, nails, and hair is:

keratin

The thick proximal nail fold is commonly called the:

cuticle

There are two types of sweat glands (also called sudoriferous glands) these are _______ and _______.

eccrine, apocrine

What chronic condition is characterized by reddened epidermal lesions covered with dry, silvery scales?

psoraisis

What is the least malignant and most common skin cancer?

basal cell carcinoma

What kind of membrane is composed of connective tissue but no epithelial cells?

synovial

What kind of membranes line body cavities that, except for the dorsal body cavity and joint capsules, do not open to the outside of the body?

serous

Which of the following is NOT a characteristic of malignant melanoma?

smooth border

Which of the following is NOT a function of skin?

produces vitamin C in the presence of sunlight

Which of the following statements is NOT true regarding melanin?

More melanin is produced when the skin is not exposed to sunlight.

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