Question

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

• A. Increases digestive tract activities.
• B. Dilates the trachea.
• C. Increases heart rate.
• D. Urinary bladder contracts.

Answer 1

Answer: (B), (C)

The correct options are
B

Dilates the trachea.

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.