The Stage of Human Development in Which the Endoderm,mesoderm,and Ectoderm

question 64

Multiple Choice

The stage of human development in which the endoderm,mesoderm,and ectoderm form is the

• A) zygote.
• B) gastrula.
• C) embryonic stage.
• D) ovum.
• E) fetal stage.

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Definitions:

Brainstem

The lower extension of the brain, connecting to the spinal cord, and responsible for controlling vital functions such as breathing and heart rate.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem to the lower back and transmits neural signals between the brain and the rest of the body.

Hypothalamus

A region of the brain located below the thalamus, responsible for the regulation of many bodily functions, including temperature, hunger, and the release of hormones.

Median Section

A vertical plane that divides the body or any of its parts into right and left halves; also known as the midsagittal plane.