Nurse cells are not
A) found in the seminiferous tubules.
B) important in forming the blood-testis barrier.
C) involved in coordinating spermatogenesis.
D) precursors to gametes.
E) also called Sertoli cells.
Answer: D
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The basic functional units of the liver are the
A) hepatocytes. B) stellate macrophages. C) lobules. D) portal areas. E) bile canaliculi.
Which component of the cardiac conduction system extends through the interventricular septum toward the apex of the heart?
A) SA node B) AV bundle C) AV node D) Right and left bundle branches
A single lobe of a kidney is comprised of ________.
A. one collecting duct and all nephrons that drain into it B. one major calyx and all of its minor calyces C. a renal medulla and two renal columns D. two calyces and a renal pelvis E. one pyramid and the overlying cortex
This figure shows a renal corpuscle. What structure does number 4 indicate?
A. Peritubular capillary B. Efferent arteriole C. Efferent venule D. Afferent arteriole E. Renal artery