Human Anatomy & Physiology: Chapter 5: Skin and the Integumentary System: Pre-Test Quiz

The amount of blood supply is directly proportional to the ability of a cell to divide and remain vital. A) True B) False

A) True Feedback: Correct Answer All cells require nutrients for their functioning; the greater the distance from a nutrient supply, the higher the probability of dying.

The dermis of the face is attached to skeletal muscle fibers that cause the skin to move during facial gestures. A) True B) False

A) True Feedback: Correct Answer: Facial gestures are caused by contraction of skeletal muscles that lie beneath the skin but may be attached to it with fibers.

The process of keratinization is directly related to the waterproofing function of the dermis. A) True B) False

A) True Feedback: Correct Answer: Keratin synthesis is a function of the stratified squamous cells of the epidermis and does make the layer relatively impermeable to water.

The following are functions of the skin except which one? A) protects joints B) prevents water loss C) reduces the chance of infection D) protects against harmful chemicals

A) protects joints Feedback: Correct Answer: The skin protects against water loss, infection, and harmful chemicals; joints are protected by a synovial, connective tissue membrane.

Increased exposure to sunlight actually maintains healthy skin and reduces the effects of aging. A) True B) False

B) False Feedback: Correct Answer: Although sunlight has its benefits such as vitamin D synthesis, studies have shown that excessive exposure to sunlight not only causes drying but damages the cell layers resulting in the wrinkles and loss of elasticity seen in aging.

A decubitus ulcer is a bedsore caused by an infectious agent or toxic organism. A) True B) False

B) False Feedback: Correct Answer: Decubitus ulcers are areas of dying skin tissue which result from the lack of an adequate blood supply, usually caused by pressure; it is possible to also be infected secondarily.

It is the body's __________________ glands that respond to higher body temperature and release water to the skin surface. A) sebaceous B) eccrine C) apocrine D) ceruminous

B) eccrine Feedback: Correct: Eccrine glands are typical sweat glands.

The following terms belong together except which one? A) bedsore B) necrosis C) decubitus ulcer D) pressure ulcer

B) necrosis Feedback: Correct Answer: Necrosis is a general term for cell death but the other terms refer to bedsores (decubitus) or pressure ulcers.

Cyanosis usually is the result of a reduction in _____. A) melanin B) hemoglobin C) oxygen levels D) the number of blood vessels

C) oxygen levels Feedback: Correct Answer: The cyanosis or blue color in light skin is primarily caused by a shift in the amount of oxygen in hemoglobin.

The skin is called the _____ membrane. A) epithelial B) serous C) synovial D) cutaneous

D) cutaneous Feedback: Correct Answer: The cutaneous membrane is commonly called the skin, and includes its accessory structures such as hair.