Select all that applyThe sympathetic nervous system causes an increase in which of the following?Multiple select question.blood pressureheart raterespirationdigestion

The sympathetic nervous system is part of the autonomic nervous system that prepares the body for the 'fight or flight' response during any potential danger. On the activation of the sympathetic nervous system:

1. Blood pressure: It increases as the sympathetic nervous system causes the blood vessels to constrict, leading to an increase in blood pressure.

2. Heart rate: It also increases. The sympathetic nervous system stimulates the heart to beat faster to pump more blood to the muscles in preparation for 'fight or flight'.

3. Respiration: It increases as well. The sympathetic nervous system causes the bronchial muscles to relax, allowing more air to flow into the lungs, increasing the rate of respiration to supply more oxygen to the body.

4. Digestion: It slows down. During a 'fight or flight' response, the body prioritizes functions that are essential for immediate survival, such as increasing blood flow to muscles and heightening senses. Digestion is not a priority in these situations, so the sympathetic nervous system slows it down.

So, the sympathetic nervous system causes an increase in blood pressure, heart rate, and respiration, but not digestion.