Gastrulation Is an Important Event in Early Embryonic Development

question 77

Multiple Choice

Gastrulation is an important event in early embryonic development. Which of the following is NOT a result of gastrulation?

• A) formation of three embryonic cell layers
• B) movement and alignment of many embryonic cells
• C) the formation of a gastrula
• D) the formation of specialized adult tissues

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Definitions:

Acetylcholine

A neurotransmitter in the nervous system that plays an important role in muscle contraction and cognitive functions.

Agonist

is a substance that binds to a receptor and triggers a response in the body, often mimicking the action of a naturally occurring substance.

Excitatory Neurotransmitter

Chemical substances in the nervous system that increase the likelihood of firing the neuron to which they bind, promoting neural activity.

Limbic System

A complex set of brain structures located on both sides of the thalamus, immediately beneath the cerebrum, involved in various functions including emotions, behavior, and long-term memory.