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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
What are the two parts of peripheral nervous system?
Branches of which nerve innervate the parotid salivary glands?
The 'ramus communicans' is given out from ______ to ______ spinal nerve.
______ carries sensation’s from the organs to the brain.
Give the name, type and origin of the following cranial nerve:
Number-II
Differentiate between sympathetic and parasympathetic nervous system with reference to the following:
- Pre and post-ganglionic nerve fibres
- Effect on heartbeat
Give reason – All spinal nerves are of mixed type.
Give the name and function of VIIth cranial nerve.
Give the name and function of VIIIth cranial nerve.
Which of the following is called the Dentist nerve?
