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प्रश्न
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
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उत्तर
(b) medulla
The medulla controls various involuntary actions such as the heart beat, breathing, blood pressure and the peristaltic movement in the body.
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संबंधित प्रश्न
Which of the following is not a natural reflex action?
A. Knee-jerk
B. Blinking of eyes due to strong light
C. Salivation at the sight of food
D. Sneezing when any irritant enters the nose
State one function each of cerebellum and pons.
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the smell of the food?
Cerbellum, medulla and pons are the parts of :
(a) mid-brain
(b) hind-brain
(c) forebrain
(d) spinal cord
Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation
Which of the following statements are true?
(i) sudden action in response to something in the environment is called reflex action
(ii) sensory neurons carry electrical signals from spinal cord to muscles in a reflex action
(iii) motor neurons carry signals from receptors to spinal cord in a reflex action
(iv) the pathway of transmitting signals from a receptor to a muscle is a reflex action
Write down the following activities in the correct order for a simple reflex arc:
(a) impulse travels in the motor fibre
(b) impulse travels in the sensory fibre
(c) effector organ stimulated
(d) impulse crosses the synapse
Define voluntary and reflex actions. Give examples of each.
State whether the following is simple reflex, conditioned reflex or neither of the two:
Blushing: ……………….
Reflex action is controlled by the
State whether the following is
Blinking
State whether the following is
Cleaning
State whether the following is
Salivation when food is put in the mouth.
What type of reflex is the following?
Sweating in summer
What type of reflex is the following?
Blinking of the eye
Differentiate between Voluntary and involuntary actions.
The given diagrammatic representation of reflex action shows knee jerk reflex.
Identify the parts labeled as A to E and select the correct option.
State whether the following is simple reflex, conditioned reflex or neither of the two.
Sneezing
