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प्रश्न
Assertion (A): Sympathetic nervous system prepares the body for violent action against abnormal conditions.
Reason (R): Sympathetic nervous system accelerates heartbeat.
Which of the following is correct?
विकल्प
Both A and R are True.
A is True, R is False.
A is False but R is True.
Both A and R are False.
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उत्तर
Both A and R are True.
Explanation:
Catecholamine hormones (epinephrine and nor-epinephrine) released by sympathetic nerve systems raise heart rate. Our body so gets ready for fight or flight and becomes hyperactive or violent under uncommon circumstances.
संबंधित प्रश्न
Identify the 'Spinal accessory' and 'hypoglossal' nerves.
Ophthalmic, maxillary and Mandibular nerves are branches of ____________ cranial nerve.
______ carries sensation’s from the organs to the brain.
Autonomous nervous system carries sensation from the organs to the brain.
Give the name, type and origin of the following cranial nerve:
Number-II
Give the name, type and origin of the following cranial nerve:
Number-IX
Which one of the following cranial nerves is responsible for hearing and equilibrium?
Give reason – All spinal nerves are of mixed type.
Write the names of any four motor cranial nerves with their appropriate serial number.
Write name, type and origin of following cranial nerve:
Number III
