Which neurotransmitter is released from postganglionic fibers of the sympathetic

Question

Which neurotransmitter is released from postganglionic fibers of the sympathetic nervous system? a. Acetylcholine b. Muscarine c. Nicotine d. Norepinephrine Which neurotransmitter is released from preganglionic fibers of the sympathetic nervous system? a. Acetylcholine b. Muscerine c. Nicotine d. Norepinephrine Which half of the autonomic nervous system causes the "fight or flight" response? a. The parasympathetic nervous system b. The somatic nervous system c. The sympathetic nervous system d. The sensory nervous system Which of the following is not an effect of the sympathetic nervous system? a. Constriction of the pupils b. increase in heart rate c. Decrease in stomach secretions d. increase in respiratory rate Which of the following is not part of the parasympathetic nervous system? a. Decreased blood flow to the muscles b. Decrease in respiration rate c. Decrease in saliva production d. Constriction of the pupil Why are beta blockers given to people with high blood pressure? a. They block the B1 adrenergic receptors of the heart b. They block the B2 adrenergic receptors of the heart c. They block the B1 nicotinic receptors of the heart d. They block the B2 muscarinic receptors of the heart

Explanation / Answer

1) norepinephrine

2) acetylcholine

3) sympathatic nervous system

4) constriction of pupil becuase it causes dilation

5) decrease in saliva production.it increses gland secretions

6) the answer is a

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