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  2. Angiotensin - Wikipedia

    en.wikipedia.org/wiki/Angiotensin

    Angiotensinogen is an α-2-globulin synthesized in the liver [7] and is a precursor for angiotensin, but has also been indicated as having many other roles not related to angiotensin peptides. [8] It is a member of the serpin family of proteins, leading to another name: Serpin A8, [9] although it is not known to inhibit other enzymes like most ...

  3. Biological functions of nitric oxide - Wikipedia

    en.wikipedia.org/wiki/Biological_functions_of...

    The vasodilatory actions of nitric oxide play a key role in renal control of extracellular fluid homeostasis and is essential for the regulation of blood flow and blood pressure. [51] NO also plays a role in erection of the penis and clitoris. [52] Nitric oxide also acts on cardiac muscle to decrease contractility and heart rate. NO contributes ...

  4. Circulatory system - Wikipedia

    en.wikipedia.org/wiki/Circulatory_system

    In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).

  5. Renin–angiotensin system - Wikipedia

    en.wikipedia.org/wiki/Renin–angiotensin_system

    When renal blood flow is reduced, juxtaglomerular cells in the kidneys convert the precursor prorenin (already present in the blood) into renin and secrete it directly into the circulation. Plasma renin then carries out the conversion of angiotensinogen , released by the liver , to a decapeptide called angiotensin I , which has no biological ...

  6. Thrombopoiesis - Wikipedia

    en.wikipedia.org/wiki/Thrombopoiesis

    The megakaryoblast is a platelet precursor that undergoes endomitosis to form megakaryocytes that have 8 to 64 nuclei. Megakaryocytes shed platelets into the bloodstream. β1-tubulin microtubules, which are found in megakaryocytes, facilitate this process of shedding platelets into the bloodstream. [5]

  7. Do Nitric Oxide Supplements Really Help With ED? - AOL

    www.aol.com/nitric-oxide-supplements-really-help...

    It’s a chemical that increases blood flow and promotes lower blood pressure through its effects on soluble guanylate cyclase (sGC), a type of enzyme found in the smooth muscle of your blood vessels.

  8. Angiogenesis - Wikipedia

    en.wikipedia.org/wiki/Angiogenesis

    These enzymes target a particular point on the blood vessel and cause a pore to form. This is the point where the new blood vessel will grow from. The reason tumour cells need a blood supply is because they cannot grow any more than 2-3 millimeters in diameter without an established blood supply which is equivalent to about 50-100 cells. [49]

  9. The Real Reason Why Turkey Makes You So Sleepy - AOL

    www.aol.com/real-reason-why-turkey-makes...

    Here’s the deal: “Turkey contains a specific amino acid called tryptophan, which helps your body make serotonin, and serotonin is a precursor for melatonin, which is commonly known as our ...