The type of membrane that prevents desiccation, provides lubrication, and traps bacteria and foreign particles is
A. serous.
B. mucous.
C. synovial.
D. cartilaginous.
E. cutaneous.
Answer: B
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Ribosomes are composed of protein and ________.
Fill in the blank(s) with the appropriate word(s).
As you are lifting a box, someone places extra weight on top of it. For your muscle to continue contracting and lifting the box, the muscle must
A. lower its threshold. B. shift from isometric to isotonic contraction. C. recruit more muscle fibers. D. reduce its wave summation. E. shift from slow-twitch to fast-twitch mode.
Which of the following causes hip adduction?
A. adductor magnus B. adductor longus C. gracilis D. both A & B E. all of the above
When the cardiac muscle cell is at rest, the concentration of _____________ is greater on the outside of the cell.
A) calcium B) sodium C) potassium D) sodium and calcium E) potassium and sodium