Looking for classes? Ksquare Career Institute, Bengaluru →
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-hormonal control system?
A
Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex
B
Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla
C
Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse
D
Hypothalamus activates the parasympathetic division of brain
Detailed Solution
In an emergency the sympathetic nervous system is activated and stimulates the adrenal medulla.
The adrenal medulla secretes adrenaline (epinephrine) and noradrenaline (norepinephrine), the fight-or-flight hormones.
These hormones come from the medulla, not the cortex.
The adrenal medulla secretes adrenaline (epinephrine) and noradrenaline (norepinephrine), the fight-or-flight hormones.
These hormones come from the medulla, not the cortex.