On Administration of an Agent,heart Rate Increases Because of a Direct

question 8

Multiple Choice

On administration of an agent,heart rate increases because of a direct effect on the heart.However,total peripheral resistance decreases dramatically.As a consequence,systolic blood pressure increases only slightly,and mean arterial pressure typically falls.This agent is

• A)epinephrine.
• B)norepinephrine.
• C)phenylephrine.
• D)isoproterenol.

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Definitions:

Crop Waste

Residue from agricultural operations left in the field or created as a by-product, which can be utilized for various purposes including energy production.

Hardwood Trees

Trees that have broad leaves, typically grow slower, and have denser wood compared to softwood trees, often used in furniture and flooring.

Earthworms

Earthworms are soil-dwelling invertebrates that play a crucial role in enhancing soil fertility and promoting decomposition and nutrient cycling.

Usable Energy

Energy in forms that can be directly used by humans or converted to other forms of energy for work, including mechanical, electrical, and chemical energies.