Which of the Following Situations Occurs in Electrically Excitable Cells

question 22

Multiple Choice

Which of the following situations occurs in electrically excitable cells?

• A)When Na+ ion channels open,K+ ion channels close.
• B)The sodium-potassium exchange pump moves sodium into the cell.
• C)Depolarization causes voltage-gated sodium ion channels to open.
• D)Ligand-gated sodium ion channels are opened by high extracellular calcium levels.
• E)Proteins tend to diffuse out of the cell.

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Definitions:

Adduction of Hip

The movement of bringing the leg toward the midline of the body.

Hip Dislocation

An injury where the head of the femur is moved out of its normal position in the socket of the pelvic bone, often due to trauma.

Lateral Rotation

The movement of a body part away from the midline, rotating along its axis in the lateral direction.

Head of Femur

The rounded, proximal end of the femur (thigh bone) that articulates with the acetabulum of the pelvis, forming the hip joint.