A Transcription Factor Characterizing Cells That Break Away from an Embryonic

question 16

Multiple Choice

A transcription factor characterizing cells that break away from an embryonic epithelium and become migratory as mesenchymal cells is called ____________.

• A)Bone morphogenetic protein-4
• B)Sonic hedgehog
• C)Engrailed-1
• D)Slug
• E)None of the above

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Definitions:

Olfactory Receptors

Specialized nerve cells located in the nasal cavity responsible for detecting odors and converting them into neural signals interpreted by the brain.

Gate Control Theory

A theory suggesting that psychological factors play a role in the perception of pain, proposing that pain signals pass through neural "gates" in the spinal cord that can modulate pain intensity.

Pain Sensations

The feelings or perceptions produced by stimulation of nerve endings, often signaling harm or potential injury.

Neural Gate

A theoretical mechanism within the nervous system thought to control the passage of pain signals to the brain.