Which is one of the most abundant excitatory neurotransmittors in the CNS?
A. Glutamate
B. Dopamine
C. Norepinephrine
D. Gamma-aminobutyric acid (GABA)
E. Endorphin
A
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The largest organ in the body is the ____
a. heart b. stomach c. pancreas d. liver
Which of the following describes tubular reabsorption in the kidney?
A. Transepithelial transport from the lumen of the tubule into renal interstitial fluid B. Transport of solutes from the renal medullary interstitial fluid into the collecting duct C. The movement of substances from the peritubular capillaries into the tubular fluid D. The movement of substances from the proximal tubule into the loop of Henle E. Movement of Na+, Cl-, and water from glomerular capillaries into Bowman's capsule
the brachioradialis muscle does which of the following actions?
a) supination of the forearm b) extension of the elbow c) pronation of the forearm d) flexion of the elbow
An ionic bond forms between ________.
A. a cation and an anion B. an anion and another anion C. a cation and another cation D. All of the choices are correct.