Question

Eicosanoids are known to be "local hormones" synthesized from the polyunsaturated fatty acid

arachidonate.
a) They are rapidly degraded.
b) They are transported to distal sites within the body.
c) Prostaglandins all have a cyclohexane ring.
d) Phosphatidyl inositol signal cascades may lead to release of arachidonate
e) Prostacyclin synthase catalyzes the committed step in the "cyclic pathway"
f) Prostaglandin h2 synthase is bound to mitochondrial membranes
g) Pgh2 synthase is sometimes referred to as cyclooxygenase
h) Ibuprofen inhibits peroxidase activity of pgh2 synthase.
i) Cox-2 is constitutively expressed at low levels in many cell types

Answer 1

Prostaglandins are unsaturated fatty acids synthesized from arachidonic acid when needed by a cell. They act as local hormones and have various functions including regulating blood pressure, blood clotting, inflammation, gastric secretions, kidney functions, and reproductive activities.

Step-by-step explanation:

Prostaglandins are chemical messengers synthesized in the cells in which their physiological activity is expressed. They are unsaturated fatty acids containing 20 carbon atoms and are synthesized from arachidonic acid when needed by a particular cell.

Prostaglandins act as local hormones and are rapidly degraded. They affect almost all organs in the body and have various functions including regulating blood pressure, blood clotting, inflammation, gastric secretions, kidney functions, and reproductive activities.