RAAS and Calcium Regulation

These flashcards cover key concepts related to the Renin-Angiotensin-Aldosterone System (RAAS) and calcium regulation in the human body.

RAAS

Renin-Angiotensin-Aldosterone System, which is activated by high potassium and low sodium levels.

Renin

An enzyme secreted by the kidneys that starts the RAAS function.

Angiotensinogen

A protein made by the liver that is converted into angiotensin by renin.

PTH

Parathyroid hormone, secreted in response to low calcium levels.

Calcitonin

A hormone that helps regulate calcium levels in the body by reducing calcium release from bones.

MAP

Mean Arterial Pressure, which is increased through the actions of the RAAS.

Aldosterone

A hormone that promotes sodium reabsorption in the kidneys and therefore increases blood pressure.

Calcium Regulation

The process by which calcium levels are maintained through hormones like PTH and calcitonin.