Chapter 5 Part A Anatomy

The most abundant cells of the epidermis.

The protein found in the epidermis that is responsible for toughening the skin.

Cells plus a disc-like sensory nerve ending that functions as a sensory receptor for touch.

Skin macrophages that help activate the immune system.

Cell remnants of the stratum corneum.

The layer of the epidermis where the cells are considered protective but nonviable.

The glands that serve an important function in thermoregulation.

The layer that contains the mitotic viable cells of the epidermis.

Hair that lacks pigment and is often called "immature hair."

May indicate embarrassment, fever, hypertension, inflammation, or allergy.

May indicate fear, anger, anemia, or low blood pressure.

Usually indicates a liver disorder.

Appearance of a permanent tan; bronzing.

A bluish color in light-skinned individuals.

The apocrine sweat glands are not the primary gland involved in thermoregulation.

The dense fibrous connective tissue portion of the skin is located in the reticular region of the dermis.

The protein found in large amounts in the outermost layer of epidermal cells is collagen.

Joe just burned himself on a hot pot. and the burn is quite painful. Joe's burn would best be described as a third-degree burn.

The reason that the nail bed appears pink is the presence of a large number of melanocytes in the underlying dermis.

During the regressive phase of hair growth, the matrix is inactive and the follicle atrophies.

The skin cancer most likely to metastasize is cancer of the melanocytes.

The skin is not able to receive stimuli because the cells of the epidermis are not living and therefore there are no sensory receptors in the skin.

The dermis contains blood vessels and nerve fibers while the epidermis does not.

For a doctor, simply looking at a patient's skin can help in making a diagnosis.

When an individual is exposed to extremely cold air the dermal blood vessels will dilate so that more blood will be brought closer to the outside surface of the skin.

Regardless of race, all human beings have about the same number of melanocytes.

Cells in the stratum corneum undergo mitosis to keep the layer thick and protective.

The pinkish hue of individuals with fair skin is the result of the crimson color of oxygenated hemoglobin (contained in red blood cells) circulating in the dermal capillaries and reflecting through the epidermis.

When a patient is said to have "third-degree burns," this indicates that the patient has burns that cover approximately one-third or more of the body.

Thick skin has a more extensive dermal layer than thin skin.

The action of the arrector pili muscle is very similar in humans as it is in other mammals but its beneficial functions differ.

Select the most correct statement concerning skin cancer. A- Basal cell carcinomas are the least common but most malignant. B- Most tumors that arise on the skin are malignant. C- Squamous cell carcinomas arise from the stratum corneum. D- Melanomas are rare but must be removed quickly to prevent them from metastasizing.

A needle would pierce the epidermal layers of the forearm in which order? A- basale, spinosum, granulosum, lucidum, corneum B- basale, spinosum, granulosum, corneum C- corneum, granulosum, spinosum, basale D- granulosum, basale, spinosum, corneum

The major regions of a hair shaft include all of the following except ________. A- cuticle B- cortex C- medulla D- external root sheath

The single most important risk for skin cancer is ________. A- race B- genetics C- use of farm chemicals D-overexposure to UV radiation

A splinter penetrated into the skin of the sole of the foot, almost to the papillary region of the dermis. Which layer of the epidermis would be the final layer injured? A- lucidum B- spinosum C- granulosum D- basale

Which of the following is a skin sensory receptor for touch? A- Ruffini body B- free nerve ending C- Meissner's corpuscles D- Pacinian corpuscle

Which statement correctly explains why hair appears the way it does? A- Kinky hair has flat, ribbonlike hair shafts. B- Gray hair is the result of hormonal action altering the chemical composition of melanin. C- Air bubbles in the hair shaft cause straight hair. D- Perfectly round hair shafts result in wavy hair.