Assuming that the right and left renal arteries arise separately, the fourth vessel to branch off the abdominal descending aorta is generally the right renal artery.
Answer the following statement true (T) or false (F)
True
Rationale: See the subsection “Renal Arteries” in the subsection “Aorta” in the section “Blood Vessels” and Figure 6-2.
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Hormones are chemicals that are released into the blood and travel all over the body where they can have effects on their target cells
Discuss the mechanisms that allow only the target cells to respond and how target cells may have very different responses to the same hormone. What will be an ideal response?
Shivering raises body temperature because:
it decreases warm blood flow to the core while increasing flow to the muscles it depresses metabolism it increases heat production up to 18 times that of resting levels the process of muscle contraction produces heat
Sperm enter the cervical canal through the external
A) isthmus. B) ampulla. C) fimbra. D) os. E) commissure.
The diameter of many blood vessels is controlled exclusively by the ________ nervous system, and decreases in the activity of this system result in _________
A. parasympathetic, vasoconstriction B. parasympathetic, vasodilation C. somatic, vasoconstriction. D. sympathetic, vasoconstriction. E. sympathetic, vasodilation.