1. Effects of the ANS. Fill in all missing blanks a. How does the sympathetic ne

Question

1. Effects of the ANS. Fill in all missing blanks a. How does the sympathetic nervous system (SNS) affect the following tissues/organs? Tissue/organ Neurotransmitter Receptor type Acti Dilate pupil Example: Iris of eye Norepinephrine Blood vessels in skin Heart Bronchioles in lungs Blood vessels in kidneys Sweat glands in skin Norepinephrine Norepinephrine b. How does the parasympathetic nervous system affect the following tissues/organs? Ncurotransmitter Receptor type AcetvlcholineNicotinic Tissue/organ Action Bronchioles constrict Example: Bronchioles in lungs Digestive glands Bladder Heart Salivary glands Nicotinic

Explanation / Answer

Sympathetic Nervous system

1.Blood vessels in skin Norepinephrine Alpha 1 receptors Vasoconstriction

2.Heart Norepinephrine Beta 1 and Beta 2 Increased Heart rate,Force of contraction and conduction

3. Bronchioles in lungs Norepinephrine Beta 2 Bronchodilatation

4. Blood vessels in kidneys Dopamine Dopamine D 1 receptors Vasoconstriction

5. Sweat glands in skin Norepinephrine Muscarinic receptor Increased sweating

Parasympathetic system

1. Digestive glands Acetylcholine Alpha Increase enzyme secretions

2. Bladder Acetylcholine Beta 2 Contraction

3. Heart Acetylcholine Beta 1 and Beta 2 Decrease Heart rate and rate of conduction

4.Salivary glands Acetylcholine Nicotinic Large volume K+ and water sectetion,amylase secretion

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