This Type of Early Cell Line Is the Precursor to the Cells

question 47

Multiple Choice

This type of early cell line is the precursor to the cells that will compose the nervous system.

• A)blastula
• B)gastrula
• C)endoderm
• D)ectoderm

---

Definitions:

Adults

Individuals who have reached a stage of physiological and psychological maturity, typically marked by the completion of physical growth.

Restorative Theory

A theory suggesting that sleep serves to repair and rejuvenate the body and mind, restoring physical and mental health.

Circadian

Relating to biological processes that display an endogenous, entrainable oscillation of about 24 hours.

Microsleep

A brief episode of sleep which may last for a second or two to a half-minute, occurring when someone is apparently awake and often goes unnoticed by the person experiencing it.