GENERAL HISTOLOGY

NERVOUS SYSTEM SPECIAL SENSE

SPINALCORD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is/are characteristic of the parasympathetic system?
A
causes the pupil to contract
B
promotes digestion of food
C
retards (slows) the heartbeat
D
all of the above
Explanation: 

Detailed explanation-1: -Decreased heart rate and blood pressure. Constriction of bronchial muscles. Increase in digestion. Increased production of saliva and mucus.

Detailed explanation-2: -It could be called your “automatic” nervous system, as it’s responsible for many functions that you don’t have to think about to control. This can include control of your heart rate, blood pressure, digestion, urination and sweating, among other functions.

Detailed explanation-3: -The parasympathetic nervous system is responsible for calming the body and conserving energy. As the body conserves energy, pupils contract, heartbeat slows, blood pressure decreases, and digestion is stimulated.

Detailed explanation-4: -Answer and Explanation: (d) It has short preganglionic fibers. is not a characteristic of the parasympathetic system. Rather, this system has long preganglionic fibers and short postganglionic fibers.

There is 1 question to complete.