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A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-harmonal control system?
Options
(a) Sympathetic nervous systemis activated releasing epinephrin and norepinephrin from adrenal medulla.
(b) neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse.
(c) Hypothalamus activates the parasympathetic division of brain.
(d) Sympathetic nervous system is activated releasing epinephrin and norepinephrin from adrenal cortex.
Correct Answer:
Sympathetic nervous systemis activated releasing epinephrin and norepinephrin from adrenal medulla.
Explanation:
Epinephrine and norepinephrine are secreted by adrenalmedulla in response to stress of any kind and during emergency situations and are called emergency hormones or hormones of flight, or fight.
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Topics: Locomotion and Neural Control
(33)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Hexose and pentoses are the most common
- Removal of introns and joining the exons in a defined order in a transcription
- In the cell walls of the guard cells cellulose microfibrils are oriented
- Which one of the following has maximum genetic diversity in India?
- Carotid artery supplies oxygenated blood to
Topics: Locomotion and Neural Control (33)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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