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Questions and Answers
What type of receptor does acetylcholine act on in ganglia?
What type of receptor does acetylcholine act on in ganglia?
- Nicotinic receptor (correct)
- Muscarinic receptor
- Adrenergic receptor
- Dopaminergic receptor
How many postganglionic fibers are usually activated by one preganglionic fiber in the parasympathetic nervous system?
How many postganglionic fibers are usually activated by one preganglionic fiber in the parasympathetic nervous system?
- 5-6
- 7-8
- 3-4
- 1-2 (correct)
Which enzyme is present in the neuronal tissue and degrades norepinephrine and epinephrine?
Which enzyme is present in the neuronal tissue and degrades norepinephrine and epinephrine?
- Monoamine oxidase (MAO) (correct)
- Tyrosine hydroxylase
- Phenylethanolamine-N-methyltransferase
- Acetylcholinesterase
In which part of the body is the majority of neurotransmitter released from the nerve terminal norepinephrine?
In which part of the body is the majority of neurotransmitter released from the nerve terminal norepinephrine?
Which hormone is predominantly released from the adrenal medulla due to high concentration of phenylethanolamine-N-methyltransferase?
Which hormone is predominantly released from the adrenal medulla due to high concentration of phenylethanolamine-N-methyltransferase?
What is the enzyme responsible for converting tyrosine into norepinephrine?
What is the enzyme responsible for converting tyrosine into norepinephrine?
Which enzyme is involved in converting norepinephrine into epinephrine?
Which enzyme is involved in converting norepinephrine into epinephrine?
Which part of the body has varicosities with very minor Phenylethanolamine-N-methyltransferase activity and concentration?
Which part of the body has varicosities with very minor Phenylethanolamine-N-methyltransferase activity and concentration?
Why is the effect of the parasympathetic nervous system less spread compared to the sympathetic nervous system?
Why is the effect of the parasympathetic nervous system less spread compared to the sympathetic nervous system?
Which enzyme degrades norepinephrine and epinephrine in varicosities of the autonomic nervous system and presynaptic terminal in the brain?
Which enzyme degrades norepinephrine and epinephrine in varicosities of the autonomic nervous system and presynaptic terminal in the brain?
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