Urine concentration and volume depend on water reabsorption in the
A. proximal convoluted tubule.
B. descending loop of Henle.
C. ascending loop of Henle.
D. distal convoluted tubule only.
E. distal convoluted tubule and collecting ducts.
E
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Arrange the following events in the proper sequence:
1. Efferent neuron reaches threshold and fires an action potential. 2. Afferent neuron reaches threshold and fires an action potential. 3. Effector organ responds by performing output. 4. Integrating center reaches decision about response. 5. Sensory organ detects change in the environment. A) 5, 3, 4, 2, 1 B) 5, 2, 4, 1, 3 C) 5, 1, 4, 2, 3 D) 2, 3, 5, 1, 4 E) 3, 1, 4, 2, 5
Which of the following hormones is not secreted by the adrenal cortex?
What will be an ideal response?
Which of these synovial joints does not have at least one rounded or convex surface?
A. Pivot B. Ball and socket C. Condylar D. Saddle E. Plane
Secretin and cholecystokinin are hormones produced in the
A) stomach B) gallbladder C) liver D) duodenum