One feature of renal blood circulation that makes it unique is that

A. there is a double set of venules.
B. blood flows from arterioles into venules.
C. blood flows from venules into arterioles.
D. each nephron has at least two capillary networks.
E. the nephron is only associated with the glomerulus.


D

Anatomy & Physiology

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One way that cells can increase their responsiveness to an external chemical regulator is by

A. increasing the number of their transmembrane receptors by endocytosis. B. increasing the number of their transmembrane receptors by exocytosis. C. uncoupling their receptors from the second message generator. D. mutating their extracellular receptors so that the affinity for the chemical regulator is reduced. E. decreasing the number of their transmembrane receptors by endocytosis.

Anatomy & Physiology

Which of the following statements about the action potential is false?

A) The rapid depolarization phase is caused by the entry of potassium ions. B) During the repolarization phase, sodium channels close and potassium channels open. C) During the depolarization phase, membrane potential becomes positive. D) During the hyperpolarization phase, the ion pumps re-establish the sodium and potassium concentrations across the cell membrane. E) Repolarization occurs as potassium ions leave the axon.

Anatomy & Physiology

Athletes abuse erythropoeitin (EPO) because it

A) increases the red blood cell supply, which depletes oxygen from muscle cells. B) decreases the red blood cell supply, which brings more oxygen to muscle cells. C) increases the white blood cell supply, which prevents infection. D) increases the red blood cell supply, which brings more oxygen to muscle cells.

Anatomy & Physiology

Answer the following statement(s) true (T) or false (F)

1. The cerebellum is the largest part of the brain. 2. The forebrain consists of the cerebrum and the diencephalon. 3. The Wernicke area recognizes spoken and written language. 4. The amygdala, hippocampus, and hypothalamus are involved in such feelings as love, anger, fear, pleasure, and pain. 5. The vision association area resides primarily in the temporal lobe.

Anatomy & Physiology