Q.
Which of the following options correctly identifies the effect of sympathetic and parasympathetic neural system on given features or organs?
Feature/
organ
sympathetic neural system $\,$
Parasym- pathetic
neural system
(a)
Salivary glands $\,$
Stimulates
secretion $\,$
Inhibits
secretion $\,$
(b)
Pupil of the eye $\,$
Dilates $\,$
Constricts $\,$
(c)
Heart rate $\,$
Decreases $\,$
increases $\,$
(d)
Intestinal
peristalsis $\,$
Decreases Stimulates $\,$
Increases inhibits $\,$
| Feature/ organ | sympathetic neural system $\,$ | Parasym- pathetic neural system | |
|---|---|---|---|
| (a) | Salivary glands $\,$ | Stimulates secretion $\,$ | Inhibits secretion $\,$ |
| (b) | Pupil of the eye $\,$ | Dilates $\,$ | Constricts $\,$ |
| (c) | Heart rate $\,$ | Decreases $\,$ | increases $\,$ |
| (d) | Intestinal peristalsis $\,$ | Decreases Stimulates $\,$ | Increases inhibits $\,$ |
Neural Control and Coordination
Solution:
Feature/
organ Sympathetic
neural system Parasympathetic
neural system Salivary glands Inhibits secretion Stimulates secretion Pupil of the eye Dilates Constricts Heart rate Increases Decreases Intestinal peri-
stalsis Inhibits Stimulates
| Feature/ organ | Sympathetic neural system | Parasympathetic neural system |
|---|---|---|
| Salivary glands | Inhibits secretion | Stimulates secretion |
| Pupil of the eye | Dilates | Constricts |
| Heart rate | Increases | Decreases |
| Intestinal peri- stalsis | Inhibits | Stimulates |