Which of the following statements regarding calcium homeostasis is true?
A. When blood calcium levels are too low, osteoclast activity increases.
B. Parathyroid hormone inhibits osteoclast activity.
C. Calcitonin elevates blood calcium levels.
D. Parathyroid hormone increases calcium loss from the kidney.
E. Increased osteoblast activity increases blood calcium levels.
Answer: A
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Fill in the blank(s) with the appropriate word(s).
Which of the following is an extensor of the neck?
A. Omohyoid B. Posterior scalene C. Occipital belly of the occipitofrontalis D. Semispinalis capitis E. Sternocleidomastoid
The muscular system consists of the ________
A) skeletal muscles B) muscles of the heart C) muscles in the walls of hollow organs D) skeletal muscles and the muscles of the heart E) muscles of the heart and those in the walls of the hollow organs
Which of the following is examined to determine the CRT?
a. lips c. gums b. tongue d. eyes