SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Adrenaline
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Acetycholine
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Thyroxine
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Prolactin
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Detailed explanation-1: -Sympathetic nerve accelerates heart beat due to adrenaline. Adrenaline or epinephrine is a hormone secreted by the medulla of the adrenal gland. It prepares the body for emergency action. It increases strength and rate of heart beat.
Detailed explanation-2: -The sympathetic nervous system (SNS) releases the hormones (catecholamines-epinephrine and norepinephrine) to accelerate the heart rate.
Detailed explanation-3: -Thyroid hormone accelerates the differentiation of adult hippocampal progenitors.
Detailed explanation-4: -The inner part is the adrenal medulla (muh-DUH-luh). It makes catecholamines (kah-tuh-KO-luh-meenz), such as epinephrine (eh-puh-NEH-frun). Also called adrenaline, epinephrine increases blood pressure and heart rate when the body is under stress.