Which of the following is NOT a chemical barrier that helps prevent entry of microbes into the body tissues?

A. Sebum
B. Normal flora
C. Lysozyme
D. Cytokines


Answer: D

Anatomy & Physiology

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The dura mater proper is the periosteal lining of the vertebral canal below the foramen magnum.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

Each consecutive bone lamella has collagen fibers that wrap in alternating directions

Indicate whether the statement is true or false

Anatomy & Physiology

The greater the ____________________ of the plasma membrane for a given ion, the greater the tendency for that ion to drive the membrane potential toward the ion's ____________________ potential

Fill in the blank(s) with correct word

Anatomy & Physiology

Tubular reabsorption and tubular secretion differ in that

A. tubular secretion is a passive process; tubular reabsorption uses active transport. B. tubular secretion adds materials to the filtrate; tubular reabsorption removes materials from the filtrate. C. tubular reabsorption increases urine volume; tubular secretion decreases urine volume. D. tubular reabsorption occurs in Bowman's capsule; tubular secretion occurs in the peritubular capillary. E. tubular secretion moves materials from the filtrate into the blood; tubular reabsorption moves materials from the blood into the filtrate.

Anatomy & Physiology