Study Guide Chapters 5, 6, 8, 9 - Chapter 5

Which of the following statements concerning hair is true?

• In males, the hairs of the beard are vellus hairs.

• Lanugo hair is only found on the fetus.

• The majority of hair on the chest is vellus hair.

• Hair in the axillary region is vellus hair after puberty.

• Both vellus and terminal hairs are pigmented.

Which of the following statements concerning the epidermis is true?

• The epidermis contains numerous blood vessels.

• The most numerous cells in the epidermis are the melanocytes.

• The dermis is superficial to the epidermis.

• The epidermis is nourished by blood vessels located in the dermis.

Which of the following statements is true about the dermis and the subcutaneous tissue?

• The dermis is a more vascular tissue than the subcutaneous layer.

• The dermis has more adipocytes than the subcutaneous layer.

• The dermis is divided into two layers; the subcutaneous layer is not.

• Neither the dermis nor the subcutaneous layer contains collagen.

Which of the following statements concerning sebaceous glands is false?

• Sebaceous secretions are lipid soluble.

• Secretions from sebaceous glands oil the hair and skin.

• Secretions from sebaceous glands provide protection against bacteria.

• Sebaceous glands are an example of apocrine glands.

• Most sebaceous glands are connected by a duct to the upper portion of the hair follicle.

Which of the following statements concerning vitamin D is false?

• Vitamin D is important for calcium homeostasis.

• Vitamin D is necessary for the uptake of calcium from the intestine.

• Vitamin D is necessary for the formation of bones and teeth.

• Vitamin D causes the kidney to excrete calcium.

• Vitamin D begins its synthesis in the skin when the skin is exposed to ultraviolet light.

Skin color is determined by number of melanocytes.

• True

• False

Which of these layers is NOT part of the skin?

• Dermis

• Hypodermis

• Epidermis

• None of the above

8. Apocrine Glands.

• are active at puberty

• are found in axilla and genitalia

• are simple coiled tubular glands

• do not regulate temperature

• all of the above

Which of these is a structure of the hair follicle and the nail

• cuticle

• shaft

• matrix

• medulla

• both a and b

Which of these layers of skin is NOT found in the palms of the hands and soles of the feet?

• stratum corneum

• stratum Basale

• stratum granulosum

• stratum lucidum