In a neuromuscular junction, synaptic vesicles in the motor neuron contain which neurotransmitter?
A) acetylcholine (ACh)
B) dopamine
C) serotonin
D) norepinephrine
Ans: A) acetylcholine (ACh)
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Answer the following statement(s) true (T) or false (F)
1. Excitable cells respond to outside stimuli by means of changes in plasma membrane shape. 2. Smooth and cardiac muscles are under involuntary control. 3. Dendrites in a neuron send outgoing signals to other cells. 4. The duct of an endocrine gland leads into the bloodstream rather than onto an epithelial surface. 5. Scar tissue helps to hold an organ together but does not restore normal function of the damaged tissue.
The mixture of sperm cells and the secretions of the seminal vesicles, the prostate, and the bulbourethral glands are collectively called ____________________
Fill in the blank(s) with correct word
What is the name for the portion of the dura mater that separates the cerebellum from the cortex?
A) falx cerebri B) falx cerebelli C) tectoral membrane D) tentorium cerebelli
Platelets release ________, a chemical vasoconstrictor that contributes to the vascular spasm
A) prostacyclin B) serotonin C) thrombin D) thromboplastin E) heparin