How Is the Capacity of the Cardiovascular System Affected During

question 29

Multiple Choice

How is the capacity of the cardiovascular system affected during early adulthood?

• A) Decreased lung and heart size impacts speed and strength.
• B) Increased lung capacity allows for greater exercise ability.
• C) Increased heart rigidity impacts blood and oxygen flow.
• D) The heart and lungs both increase in flexibility.

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Definitions:

Conceiving a Child

The process by which a sperm fertilizes an egg, leading to the initiation of pregnancy.

Stigma

The portion of the carpel where pollen grains land during pollination (and before fertilization).

Style

The neck connecting the stigma to the ovary of a carpel.

Pollen Tube

In gymnosperms and flowering plants, a tube or extension that forms after germination of the pollen grain and through which male gametes (sperm cells) pass into the ovule.