At Around Seven Weeks of Prenatal Development, the Heartbeat Can

question 164

Multiple Choice

At around seven weeks of prenatal development, the heartbeat can be detected on an ultrasound, indicating that the _____ is already functional.

• A)medulla
• B)somatosensory cortex
• C)motor cortex
• D)prefrontal cortex

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Definitions:

Inner Ear

The innermost part of the ear, containing the cochlea, vestibule, and semicircular canals, responsible for hearing and balance.

Five Senses

The traditional set of senses used for perception: sight, hearing, taste, smell, and touch.

Sensory Threshold

The minimum level of stimulus intensity needed for a stimulus to be perceived.

Stimulation

The act of arousing or urging into action, often by providing an external stimulus to trigger a response.