Which Important Structure Develops Mainly During the Embryonic Stage

question 51

Multiple Choice

Which important structure develops mainly during the embryonic stage?

• A) heart
• B) brain
• C) fingernails
• D) placenta

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Definitions:

Caffeine

A stimulant found in various plants, which acts on the central nervous system to increase alertness and reduce fatigue.

Nicotine

A potent chemical found in tobacco products that is addictive and can both stimulate and relax a person.

Stimulants

A class of drugs that increase alertness, attention, and energy by raising the levels of key neurotransmitters.

Widely Used

Referring to something that is commonly or extensively utilized across various contexts or applications.