Age of a skeleton can be determined from
A) the presence of heterotopic bones.
B) the number of ribs present.
C) the degree of ossification of cranial sutures.
D) the number of teeth present and the degree of ossification of cranial sutures.
E) the number of teeth present.
D) the number of teeth present and the degree of ossification of cranial sutures.
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Peptide hormones are comprised of chains of what?
a) nucleic acids b) amino acids c) fatty acids d) carbohydrates
Regarding the cardiovascular system, the main role(s) of the kidneys is/are to
A) minimize fluid loss from the blood and therefore maintain blood pressure and reduce blood volume and therefore reduce blood pressure. B) minimize fluid loss from the blood and therefore maintain blood pressure. C) reduce blood volume and therefore reduce blood pressure. D) restore lost fluid to the blood and therefore raise blood pressure. E) restore lost fluid to the blood and therefore raise blood pressure and minimize fluid loss from the blood and therefore maintain blood pressure.
Macrophages ingest invaders
Indicate whether the statement is true or false.
The apneustic center
a. is located in the medulla b. stimulates the inspiratory neurons c. inhibits inspiratory activity d. stimulates the pneumotaxic area e. performs c and d