Swelling and soreness of the lymph nodes indicate that __________.
A) the immune system is incapable of working.
B) dangerous cancerous changes are occurring in the immune system.
C) immune cells are fighting infection.
D) too much or improper exercise has been undertaken.
E) None of the answers are correct.
C) immune cells are fighting infection.
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In the process of homeoviscous adaptation, cells
A) Alter rates of chemical reactions. B) Alter membrane fluidity. C) Alter isozyme ratios. D) Switch to alternative biochemical pathways.
The average length of the menstrual cycle is ___________.
A) 21 days. B) 10 days. C) 28 days. D) 14 days. E) 35 days.
Which of the following is a function of epithelial tissue?
A. Secretion and absorption of molecules B. Support of other tissue types C. Conduction of action potentials D. Shock absorption E. Contraction
The point of the shoulder is also known as the:
A) antebrachial region. B) acromial region. C) digital region. D) brachial region.