What is the function of acetylcholinesterase?
A) It closes the neuromuscular junction to stop a muscle contraction.
B) It acts as a receptor for acetylcholine.
C) It deactivates acetylcholine.
D) It stimulates the synaptic knob into functioning.
Answer: C) It deactivates acetylcholine.
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The reproductive system does not include
A) gonads and external genitalia. B) ducts that receive and transport the gametes. C) accessory glands and organs that secrete fluids. D) mammary glands. E) None of the answers is correct.
Which does not drain into the first part of the duodenum?
A. spleen B. pancreas C. common bile duct D. They all drain at this site.
The group of five vertebrae that are normally fused and have a broad surface for muscle attachment are the ________ vertebrae.
Fill in the blank(s) with the appropriate word(s).
The passageway through the digestive tube is called the ________.
Fill in the blank(s) with the appropriate word(s).