The Forebrain, Midbrain, and Hindbrain Are First Visible in a Human

question 116

Multiple Choice

The forebrain, midbrain, and hindbrain are first visible in a human embryo after about:

• A)10 days.
• B)14 days.
• C)28 days.
• D)35 days.

---

Definitions:

Thermoregulatory Maximum

The maximum capacity of an organism to maintain its core internal temperature within an optimal range, despite external temperature fluctuations.

Set Point

A general term for the level at which negative feedback tries to maintain stability.

Autonomic Nervous System

The part of the nervous system that controls involuntary bodily functions, including heart rate, digestion, and respiratory rate.

Sympathetic

Relating to the part of the autonomic nervous system that typically prepares the body for action in threatening situations.