Home
Class 11
BIOLOGY
Heart pumps blood more forcefully in old...

Heart pumps blood more forcefully in older persons than younger ones due to

A

decrease in oxygen content of blood

B

decrease in elasticity of arteries

C

fall in nutrient content of blood

D

increase in elasticity of arteries

Text Solution

Verified by Experts

The correct Answer is:
B
As one ages, arteries lose their elasticity. Consequently the heart has to pump the blood more forcefully in order to fulfill the need of the body cells.
Promotional Banner

Similar Questions

Explore conceptually related problems

Heart wood is more useful than sap wood . Justify .

C plants are more efficient in photosynthesis than C_3 - plants due to:

Clumping of RBC may occur when blood of one person is mixed with serum or blood of another person. This is due to

C_(4) plants are more efficient in photosynthesis than C_(3) plants due to

Embryo with more than 16 blastomeres formed due to in vitro fertilization is transferred into:

Can the coefficent of friction be more than one

Endocrine glands control and co-ordinate the body functions through secreting certain chemical messengers called hormones. Due to certain physiological reasons, the blood glucose level of otherwise normal persons increases. Give the possible cause for the increases in blood glucose level.