Second Messengers
Secreted from the kidneys into the bloodstream, this curious enzyme starts the renin-angiotensin-aldosterone system by converting angiotensinogen present in the blood.
What is renin?
What is skin?
This is a hormone made in the adrenal glands that acts on the kidneys to save water from the urine.
What is aldosterone?
Made from angiotensinogen, this second messenger has to be converted into another form for it to be useful to the adrenal glands.
What is angiotensin I?
This is what triggers the renin-angiotensin-aldosterone system to start after a hemorrhage.
What is low blood pressure?
This key organ, important also in daily life in your abdomen, is necessary to start renin-angiotensin-aldosterone system, not necessarily after blood loss.
What is the kidney?
Later learned in BIOL 204 to be processed in the capillary of lungs, this protein is used to act on the adrenal glands to make them produce more aldosterone.
What is angiotensin II?
Hemorrhage as a result leads to reduced levels of many important parts of blood, especially one. What type of non-organic molecule is used as a solvent for the blood?
What is water?
This key organ sitting above each kidney makes aldosterone, an important component in the renin-angiotensin-aldosterone system. It also makes hormones for fight-or-flight scenarios.
What are the adrenal glands?
Angitensin II acts on these oddly-shaped organs on top of each kidney.
What are the adrenal glands?
His palms are sweaty,
Knees weak,
Arms spaghetti.
Which one of these would happen with hemorrhage?
What is his palms are sweaty?
The effects of aldosterone are important in keeping this vital part, among others, of the body alive - the workhorse of the circulatory system.
What is the heart?
Often overlooked, although this protein isn't exactly a hormone it acts like norepinephrine: it constricts the arterioles of non-vital areas to redirect most of the blood to vital organs.
What is angiotensin II?
You don't want the hemorrhage aspect of the renin-angiotensin-aldosterone system acting up in this case! It may cause death and overload the heart as a result.
What is a heart attack/myocardial infarction?
The brain also reacts to low blood pressure by releasing this hormone into the bloodstream to reach the kidneys. It works like aldosterone for more water retention.
What is ADH (antidiuretic hormone)?