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प्रश्न
Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation
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उत्तर
(b) chewing
Chewing is a voluntary action, while actions like vomiting, heart beat and salivation are involuntary.
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संबंधित प्रश्न
Which part of the brain maintains posture and equilibrium of the body?
Fill in the following blank with suitable word :
A neuron which carries an impulse to the brain is called a ........... neuron.
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the gland which is stimulated to secrete saliva.
What is a reflex action? Explain with the help of an example.
Give the various functions of brain.
Which of the following cannot be considered a receptor?
(a) ear
(b) nose
(c) muscle
(d) eye
Which of the following helps in maintaining posture and balance of the human body?
The part of brain which controls the involuntary action such as heart beat, breathing, blood pressure, etc. is :
(a) pons
(b) medulla
(c) cerebrum
(d) cerebellum
One of the following gives the correct sequence of the components in a reflex arc. This is:
The gustatory receptors of our body are in one of the following organs. This organ is :
a) ear
(b) nose
(c) tongue
(d) skin
Multiple choice question. Tick (✓) the correct choice:
Reflex actions occur under the control of
- brain
- medulla oblongata
- spinal cord
- cerebrum
State whether the following is simple reflex, conditioned reflex or neither of the two:
Sneezing: …………….
State whether the following is simple reflex, conditioned reflex or neither of the two.
Contraction of eye pupil
State whether the following is simple reflex, conditioned reflex or neither of the two.
Sudden application of brakes of the cycle on sighting an obstacle in front
What is the difference between reflex action and voluntary action?
Explain the mechanism of reflex action with the help of a suitable diagram.
What is a reflex action?
State whether the following is
Salivation when food is put in the mouth.
What kind of reflex is cycling?
