Which of the following is a portal system?

A) Heart ? artery ? arteriole ? capillary bed ? venule ? vein ? vein ? heart
B) Heart ? artery ? vein ? heart
C) Heart ? artery ? arteriole ? capillary bed ? arteriole ? capillary bed ? venule ? vein ? heart
D) Heart ? artery ? artery ? arteriole ? capillary bed ? venule ? vein ? heart


C

Anatomy & Physiology

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More than 95 percent of the protein in a red blood cell is

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The epidermal ________ are downward waves that are extensions of the epidermis and lie between the dermal papillae.

Fill in the blank(s) with the appropriate word(s).

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The pituitary hormone that promotes egg development in ovaries and sperm development in testes is

A) TSH. B) ACTH. C) FSH. D) LH. E) GH.

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Describe a typical strand of hair

A) A keratinous strand produced by basal cells within a hair follicle. B) A small connective tissue peg filled with blood vessels and nerves. C) A bundle of smooth muscles attached to a hair follicle. D) A layer of epithelial cells surrounding a deep layer of connective tissue. E) Many layers of dead, tightly compressed cells packed with keratin.

Anatomy & Physiology