The first step leading to angiotensin II production is the secretion of what by the kidneys?
A. Angiotensin I
B. Angiotensinogen
C. Angiotensin converting enzyme
D. Calcitriol
E. Renin
E. Renin
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The nail ________ covers the nail bed.
A) root B) body C) lunula D) cuticle E) eponychium
Which is not correct regarding the spleen?
A. It has an outer cortex and inner medulla. B. It is divided into sections by capsular extensions called trabeculae. C. Its white pulp contains T-lymphocytes, B-lymphocytes, and macrophages. D. Its blood is supplied by the splenic artery and drained by the splenic vein.
The beating of the cilia of the respiratory passages in the direction of the pharynx forms a ________.
Fill in the blank(s) with the appropriate word(s).
Which blood vessels of the renal medulla run alongside the nephron loops?
A. Vasa recta B. Vasa efferentia C. Arcuate arteries D. Efferent arterioles E. Henle's vessels