Which of the following does NOT correctly depict the effects of parathyroid hormone (PTH)?
A) PTH stimulates osteoclast activity.
B) PTH stimulates the intestines to absorb calcium ions.
C) PTH weakens the bones.
D) PTH decreases blood calcium ion concentration.
Answer: D
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Concentric contractions occur when
A. the muscle produces increasing tension as it shortens. B. the tension and length of the muscle remain constant during a contraction. C. tension in a muscle is maintained while the muscle increases in length. D. the muscle produces tension while the length of the muscle increases. E. isometric contractions occur.
Is it possible to determine blood pressure from a cardiac cycle graph? Why or why not?
A) Yes, but only systolic pressure can be read. B) Yes, but only diastolic pressure can be read. C) No, blood pressure must be measured using a pressure cuff and stethoscope. D) Yes, both systolic and diastolic pressures can be read.
Because of the thyroid hormone's growth-promoting effects, excessive growth is one outcome of excess thyroid hormone secretion in children
Indicate whether the statement is true or false
The bony bars, or rods, that make up spongy bone are called
A. canaliculi. B. osteons. C. endosteum. D. trabeculae.