Which of the following are the functions of the sympathetic nervous system?

a. Increases digestive tract activities.

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b. Dilates the trachea.

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c. Increases heart rate.

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d. Urinary bladder contracts.

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Solution

The correct options are
B b. Dilates the trachea.
C c. Increases heart rate.
The sympathetic nervous system is the part of the autonomic nervous system that prepares the body to react to stresses such as threat or injury. It causes muscles to contract and heart rate to increase, stops the digestion activities (the lack of saliva and gastric juice secretion), it dilates our trachea, etc. All these activities prepare our body for a flight or fight response when in danger.

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Q. Sort the following into the category 'Sympathetic system' and 'Parasympathetic system' accordingly.

1) Trachea dilates
2) Heart beat increases
3) Glucose is converted to glycogen
4) Production of hormones increases
5) The pupils constrict
6) Urinary bladder contracts

Q. The heart rate is increased by a nerve which belongs to the following division of nervous system.
I. Autonomic
II. Central
III. Peripheral
IV. Sympathetic

The cardiac activity could be moderated by the autonomous neural system.
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(b) The sympathetic system stimulates heart rate and stroke volume
(c) The parasympathetic system decrease the heart rate but increase stroke volume
(d) The sympathetic system decreases the heart rate but increases stroke volume

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Q. Statement 1: Parasympathetic neural system increases the rate of heart beat.
Statement 2: Sympathetic neural system decreases the rate of heart beat.

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