Read the following statements.
(a) A special neural centre called cardiovascular centre
is present in medulla oblongata.
(b) Sympathetic nerve endings which release
adrenaline accelerate the heart beat.
(C) Parasympathetic nerve endings which release
acetylcholine decrease the speed of conduction of
action potential in heart,
(d) Adrenal medullary hormones released during
resting conditions cause a reduction in strength of
heart contraction and cardiac output.
How many of the above statements are correct?
Two
One
Four
Three
Answers
Answer:
special neural centre called cardiovascular centre
is present in medulla oblongata.
(b) Sympathetic nerve endings which release
adrenaline accelerate the heart beat.
(C) Parasympathetic nerve endings which release
acetylcholine decrease the speed of conduction of
action potential in heart,
(d) Adrenal medullary hormones released during
resting conditions cause a reduction in strength of
heart contraction and cardiac output.
How many of the above statements are correct?
Two
One
Four
Three
Your answer
(quit)
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Answer:
Explanation:
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on:
Answer:
according to me the answer is two