Which of the following provides a first line of defense against pathogens?

a. complement
b. intact skin and mucous membranes
c. antimicrobial proteins
d. inflammation


Answer: b. intact skin and mucous membranes

Anatomy & Physiology

You might also like to view...

Factors that are necessary for proper bone formation include all of the following, except

A) vitamin A. B) vitamin E. C) vitamin C. D) the hormone thyroxine. E) vitamin D.

Anatomy & Physiology

The size of an EPSP is independent of the amount of excitatory neurotransmitter that is released by the presynaptic cell

Indicate whether this statement is true or false.

Anatomy & Physiology

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

Indicate whether the statement is true or false

Anatomy & Physiology

Describe the effects of the concentration and electrical gradients on the movement of Na+ and K+ ions through the membrane

What will be an ideal response?

Anatomy & Physiology