Chapter 5 Wiley Extra Practice Questions

What criteria are used to distinguish thick and thin skin? a) Distribution on body. b) Thickness and number of layers of epidermis. c) Number and types of glands present. d) Presence of epidermal ridges. e) All of these are criteria used.

All of these are criteria used.

Which of the following statements is incorrect? a) Melanin, cartilage, and hemoglobin impart color to the skin. b) The amount of melanin causes skin's color to vary from pale yellow to black. c) The differences in skin color are due to the amount of melanin produced and moved to the keratinocytes.

a) Melanin, cartilage, and hemoglobin impart color to the skin

Which of the following statements is incorrect? a) Sebaceous glands are attached to hair follicles and secrete sebum which protects and lubricates skin. b) Sudoriferous glands release perspiration into hair follicles or onto the surface of the skin through pores. c) Ceruminous glands produce a waxy substance which protects the genitals. d) All of these statements are correct.

c) Ceruminous glands produce a waxy substance which protects the genitals.

Which of these statements is incorrect? a) A tattoo is a permanent coloration of the dermis. b) Body piercing can lead to infections, allergic reactions and anatomical damage. c) Tattoos may interfere with childbirth. d) Tattoos may be removed using lasers but the procedure is time consuming and expensive.

c) Tattoos may interfere with childbirth.

Which of the following statements about a hair is FALSE? a) Consists of a shaft, root, and a hair follicle. b) The arrector pili muscle is responsible for "goose bumps". c) The root of a hair penetrates the dermis. d) The hair matrix contains cells that are undergoing apoptosis.

d) The hair matrix contains cells that are undergoing apoptosis.

A nail consists of a free edge, a nail body which is the visible part of the nail and the lunula which is covered by the eponychium.

false

Epidermal ridges are formed by downward projection of the epidermis into the dermis between the dermal papillae of the papillary region.

true

Epidermal wound healing doesn't result in scar formation because wound edges have only superficial damage and basal cells quickly enlarge and migrate to cover the wound.

true

Stimulation of neurons in the skin gives rise to tactile sensations, thermal sensations, and pain.

true

The integumentary system is composed of skin, hair, oil and sweat glands, nails and sensory receptors.

true

The skin helps to regulate body temperature by producing perspiration and adjusting blood flow to the dermis.

true

Which of the following substances can NOT penetrate the skin? a) Water soluble substances b) Fat soluble substances c) Oxygen and carbon dioxide d) Organic solvents like acetone

water soluble substances

The epidermis and dermis differ in: (Select all that apply.) 1) Vascularization 2) Viability of cells 3) Presence of sensory receptors 4) Types of cells present

1, 2, 3, and 4

The skin provides a physical and chemical barrier to harmful agents by: (Select all that apply.) 1) Presence of simple squamous epithelial tissue 2) Presence of macrophages 3) The maintenance of an acidic pH 4) Production of antibacterial substances

2, 3, and 4

As newly formed cells of the stratum basale are pushed to the surface, they accumulate keratin and undergo apoptosis. This process is referred to as ________.

Keratinization