Podcast
Questions and Answers
Which neurotransmitter is released by preganglionic sympathetic axons?
Which neurotransmitter is released by preganglionic sympathetic axons?
- Dopamine
- Epinephrine
- Norepinephrine
- Acetylcholine (ACh) (correct)
Which type of receptors bind to epinephrine and norepinephrine?
Which type of receptors bind to epinephrine and norepinephrine?
- Muscarinic receptors
- Adrenergic receptors (correct)
- Nicotinic receptors
- Cholinergic receptors
What is the function of the sympathetic nervous system in relation to blood pressure?
What is the function of the sympathetic nervous system in relation to blood pressure?
- Has no effect on blood pressure
- Decreases blood pressure by lowering the heart rate and causing vasodilation
- Increases blood pressure by raising the rate and force of contraction of the heart and causing vasoconstriction (correct)
- Increases blood pressure by lowering the heart rate and causing vasodilation
What effect do sympathetic neurons have on the bronchi?
What effect do sympathetic neurons have on the bronchi?
Which neurotransmitter causes vasodilation of the blood vessels serving skeletal muscles?
Which neurotransmitter causes vasodilation of the blood vessels serving skeletal muscles?
What neurotransmitter is released by postganglionic sympathetic axons?
What neurotransmitter is released by postganglionic sympathetic axons?
Which division of the autonomic nervous system is often referred to as the 'fight or flight' division?
Which division of the autonomic nervous system is often referred to as the 'fight or flight' division?
What type of receptors bind to epinephrine and norepinephrine?
What type of receptors bind to epinephrine and norepinephrine?
What is the primary neurotransmitter released by preganglionic sympathetic axons?
What is the primary neurotransmitter released by preganglionic sympathetic axons?
What effect do sympathetic neurons have on blood vessels serving skeletal muscles?
What effect do sympathetic neurons have on blood vessels serving skeletal muscles?
Study Notes
Sympathetic Nervous System
- Acetylcholine is released by preganglionic sympathetic axons.
- Alpha and beta receptors bind to epinephrine and norepinephrine.
- The sympathetic nervous system increases blood pressure in response to stress.
- Sympathetic neurons cause bronchodilation, which increases airflow to the lungs.
- Norepinephrine causes vasodilation of the blood vessels serving skeletal muscles.
- Norepinephrine is released by postganglionic sympathetic axons.
- The sympathetic nervous system is often referred to as the 'fight or flight' division.
- Alpha and beta receptors bind to epinephrine and norepinephrine.
- Acetylcholine is the primary neurotransmitter released by preganglionic sympathetic axons.
- Sympathetic neurons cause vasodilation of blood vessels serving skeletal muscles.
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Description
Test your knowledge of the sympathetic nervous system with this quiz. Explore the functions, anatomy, and neurotransmitters involved in the "fight or flight" division of the autonomic nervous system.
