Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation

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Solution

(b) chewing
Chewing is a voluntary action, while actions like vomiting, heart beat and salivation are involuntary.

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Question 23
Which of the following is not an involuntary action?

(a) Vomiting
(b) Salivation
(c) Heart beat
(d) Chewing

Question 23
Which of the following is not an involuntary action?

(a) Vomiting
(b) Salivation
(c) Heart beat
(d) Chewing

Q. Which of the following statements are true about the brain?
I. The main thinking part of the brain is the hindbrain.
II. Centres of hearing, smell, memory, sight etc are located in the forebrain.
III. Involuntary actions like salivation, vomiting and blood pressure are controlled by the medulla in the hindbrain.
IV. Cerebellum does not control pressure and balance of the body.

The part of brain which controls the involuntary actions such as heart beat, breathing, blood pressure, etc. is :

(a) pons

(b) medulla

(d) cerebellum

Match the following:

$\begin{matrix} 1. T h i s p a r t o f t h e b r a i n t e l l s u s & (i) C e r e b e l l u m w h e t h e r w e a r e h u n g r y o r f u l l 2. T h i s p a r t o f t h e b r a i n i s r e s p o n s i b l e & (i i) M e d u l l a f o r p r e c i s i o n o f v o l u n t a r y a c t i o n s 3. I n v o l u n t a r y a c t i o n s l i k e v o m i t i n g a n d s a l i v a t i o n & (i i i) F o r e - b r a i n a r e c o n t r o l l e d b y t h i s p a r t o f t h e b r a i n \end{matrix}$

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Which of the following is not an involuntary action? (a) vomiting (b) chewing (c) heart beat (d) salivation

(b) chewingChewing is a voluntary action, while actions like vomiting, heart beat and salivation are involuntary.

Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation

(b) chewing
Chewing is a voluntary action, while actions like vomiting, heart beat and salivation are involuntary.