PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Neurotransmitter receptors
|
|
|
Voltage-gated ion channels
|
|
|
The sodium-potassium pump
|
|
|
Ligand-gated ion channels
|
Detailed explanation-1: -[3][4] The Na+K+-ATPase pump helps to maintain osmotic equilibrium and membrane potential in cells. The sodium and potassium move against the concentration gradients. The Na+ K+-ATPase pump maintains the gradient of a higher concentration of sodium extracellularly and a higher level of potassium intracellularly.
Detailed explanation-2: -Active transport is the energy-requiring process of pumping molecules and ions across membranes against a concentration gradient. The sodium-potassium pump is an active transport pump that exchanges sodium ions for potassium ions.
Detailed explanation-3: -Hyperkalemia☆ The primary intracellular electrolyte, potassium produces a high osmotic pressure to maintain cell volume. Potassium is essential for maintaining a normal cell resting membrane potential and for generating and propagating action potentials in excitable tissues.