Select All That Occur During the Plateau Phase of an Action

question 11

Short Answer

Select all that occur during the plateau phase of an action potential on a cardiac muscle cell.
A) Calcium is entering the cell.
B) Potassium is exiting the cell.
C) Sodium is entering the cell.
D) Calcium is exiting the cell.

• A) Calcium is entering the cell.
• B) Potassium is exiting the cell.
• C) Sodium is entering the cell.
• D) Calcium is exiting the cell.

---

Definitions:

Transduction

The process by which foreign DNA is introduced into a cell by a virus or viral vector. In sensory science, it refers to the conversion of a stimulus into a signal by a sensory receptor.

Electrical Impulse

A signal that travels along the axon of a neuron, typically as a result of nerve cell activation.

Precentral Gyrus

A region of the frontal lobe in the brain responsible for voluntary movement, including the motor cortex.

Synaptic Vesicles

Small sacs within presynaptic nerve terminals that store neurotransmitters, which are released into the synaptic cleft upon stimulation.