Juxtaglomerular cells in the nephron secrete
A) angiotensin converting enzyme.
B) angiotensinogen.
C) aldosterone.
D) angiotensin I.
E) renin.
E) renin.
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At a(n) ________ synapse, a neurotransmitter is released to stimulate the postsynaptic membrane
A) electrical B) chemical C) electrochemical D) ionic E) charged
Receptors for acetylcholine are located on the
A) synaptic knob. B) motor end plate. C) sarcomere. D) synaptic cleft. E) transverse tubule.
What part of the reflex arc transmits the message to the effector?
A) Receptor B) Motor neuron C) Sensory neuron D) Integration center E) Effector
Cerebrospinal fluid is secreted by choroid plexuses in the ________ ventricles and reabsorbed by arachnoid villi in the ________.
A. lateral, third, and fourth; superior sagittal sinus B. lateral, third, and fourth; central canal of the spinal cord C. lateral, and third; superior sagittal sinus D. lateral; central canal of the spinal cord