Which is the most abundant type of cellular element in the blood?
a. erythrocytes.
b. neutrophils.
c. leukocytes.
d. lymphocytes.
e. platelets.
A
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The ECG allows one to detect the electrical activity of a single contractile cell in the heart, but it does not show any mechanical events such as contraction and relaxation
Indicate whether the statement is true or false
Which of the following statements best describes relaxin?
A. Relaxin is produced by the testes and stimulates secretion of the reproductive glands. B. Relaxin is produced by the ovaries and increases the flexibility of connective tissue. C. Relaxin is produced by the adrenal cortex and maintains normal metabolism. D. Relaxin is produced by the parathyroid glands and triggers the release of calcium from the bones.
The lower the pH,
A. the greater the hydroxide ion concentration. B. the lesser the hydrogen ion concentration. C. the more basic the solution and the greater the hydroxide ion concentration. D. the more acidic the solution. E. the lesser the hydrogen ion concentration and the more acidic the solution.
Which of the following are salivary glands?
(1) parotid (2) sublingual (3) submandibular (4) geniculate (5) maxillary A) All of the answers are correct. B) None of the answers are correct. C) 2, 4 D) 1, 2, 3 E) 3, 4, 5