Mental and physical sluggishness and low body temperature may be signs of
A) hyperthyroidism.
B) hypothyroidism.
C) hyperparathyroidism.
D) hypoparathyroidism.
E) diabetes insipidus.
B
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Structure I is composed of
A) actin and perimysium.
B) actin and myosin.
C) troponin and tropomyosin.
D) only myosin heads.
E) acetylcholine and cholinesterase.
As a bone increases in diameter, what happens to the medullary cavity?
A) The medullary cavity increases in diameter because bone matrix is removed by osteoblasts. B) The medullary cavity increases in diameter because bone matrix is removed by osteoclasts. C) The medullary cavity decreases in diameter because bone matrix is added by osteoclasts. D) The medullary cavity decreases in diameter because bone matrix is added by osteoblasts. E) The medullary cavity diameter does not change but fills in with more bone marrow.
All of the following are examples of catabolic reactions EXCEPT
A. trypsin in the stomach digesting large proteins into smaller ones. B. synthesizing the enzyme maltase from amino acids. C. amylase in saliva breaking down starch into simple sugars. D. the release of energy by converting ATP into ADP during a metabolic reaction.
Bony joints are the most common type of joints
Indicate whether the statement is true or false