Question

a)give 2 functions of the parasympathetic nervous system
b)give 2 functions of the sympathetic nervous system.(write exact functions, not just rest and digest,works at
ease,controls digestion or heart rate, alert system or contracts muscle or flight/fight etc)

Explanation:

Part A (Parasympathetic Nervous System Functions)

1. Function 1: It stimulates the salivary glands to secrete saliva, which aids in the initial process of digestion (breaking down food chemically in the mouth).
2. Function 2: It causes the pupils of the eyes to constrict (miosis), reducing the amount of light entering the eyes, which is useful in low - light or relaxed environments.

Part B (Sympathetic Nervous System Functions)

1. Function 1: It dilates the bronchioles in the lungs, allowing for a greater volume of air to enter the lungs. This is important during situations like exercise or stress when the body needs more oxygen.
2. Function 2: It stimulates the liver to convert glycogen into glucose and release it into the bloodstream. This increases blood glucose levels, providing the body with more energy, especially during times of stress or physical activity.

Answer:

Part A

1. Stimulates salivary gland secretion.
2. Causes pupil constriction (miosis).

Part B

1. Dilates lung bronchioles.
2. Stimulates liver glycogen - to - glucose conversion and release.