During Which Period of Development Does the Thyroid Gland First

question 115

Multiple Choice

During which period of development does the thyroid gland first begin to produce the hormone thyroxine?

• A)fetal
• B)early infancy
• C)late infancy
• D)early childhood

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Definitions:

Microglia

A type of glial cell located throughout the brain and spinal cord, acting as the primary form of active immune defense in the central nervous system.

CNS

Central Nervous System, which comprises the brain and spinal cord, responsible for processing information and controlling the majority of functions of the body and mind.

Myelin Sheath

The myelin sheath is a protective covering made of fatty substances that surrounds nerve fibers, enhancing the speed and efficiency of electrical signal transmission along the nerve cells.

Action Potential

A rapid rise and subsequent fall in voltage or electrical charge across a cellular membrane, the basis for neural communication and muscle contraction.