A person entering an empty room suddenly finds a snake right in front on opening the door.
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 neurohormonal control system?
(a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine 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 epinephrine and norepinephrine from adrenal cortex
2 Answers
The correct option is (a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla.
Explanation:
Epinephrine and nor-epinephrine are secreted by adrenal medulla (under the control of sympathetic nervous system) in response to stress of any kind or during emergency situations. These are also called emergency hormones. Thus, they would be released when the person enter an empty room and suddenly finds a snake.
Correct option: (a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine 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.