Refer to the Following Graph of an Action Potential to Answer

question 39

Multiple Choice

Refer to the following graph of an action potential to answer the question. At label ________, the cell is not hyperpolarised; however, repolarisation is in progress, as the sodium channels are inactivated or becoming inactivated, and many potassium channels have opened.

• A) B
• B) C
• C) D
• D) E Disallow randomisation

---

Definitions:

Coccygeal

Pertaining to the coccyx, the small bone at the base of the spinal column in humans and other apes, often referred to as the tailbone.

Mixed Nerves

Nerves that contain both sensory (afferent) and motor (efferent) fibers, allowing them to transmit signals in both directions between the central nervous system and various parts of the body.

Filum Terminale

The filum terminale is a thin filament of connective tissue that extends from the apex of the conus medullaris (the tapered lower end of the spinal cord) to the coccyx, anchoring the spinal cord in place.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, and transmits nerve signals between the brain and the rest of the body.