What is the most common inhibitory neurotransmitter in the brain?
A. Acetylcholine
B. Epinephrine
C. Noradrenaline
D. Norepinephrine
E. ?-aminobutyric acid (GABA)
Answer: E
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All of the following muscles flex the elbow except which one?
A. Triceps brachii B. Brachioradialis C. Brachialis D. Biceps brachii
In this image showing connective tissue components, what structure does number 2 indicate?
A. Mesenchymal cell B. Fibroblast C. Adipocyte D. Macrophage E. Extracellular matrix
Which of the following is true about smooth muscle contraction?
A) Certain smooth muscle cells can actually divide to increase their numbers. B) Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements. C) Smooth muscle cannot stretch as much as skeletal muscle. D) Smooth muscle has well-developed T tubules at the site of invagination.
Visceral pain coming from the stomach is referred to which location(s) in the diagram?
a) B b) G c) H d) F e) E