When blood calcium levels are low
A. ostoclast activity increases.
B. calcitonin secretion increases.
C. bones produce more bone tissue.
D. calcium absorption is reduced.
E. osteoblast activity increases.
A
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Match each item with the correct term.
A. porta hepatis B. ileum C. peritoneum D. crus E. inferior mesenteric vein (IMV) F. caval hiatus G. falciform ligament H. suprarenals I. celiac axis J. jejunum
Which of following properties of microtubules is correct?
A) made of myosin B) made of actin C) found only in the terminal web D) another term for microfilaments E) interact with dynein and kinesin
Acetylcholine is a neurotransmitter frequently used in the autonomic nervous system.
Answer the following statement true (T) or false (F)
The nasal cavity is divided into right and left sides by
A. the conchae. B. the paranasal sinuses. C. external nares. D. the nasal septum. E. the hard palate.