Angiotensin II is a potent vaso-active peptide that causes blood vessels to constrict, resulting in increased blood pressure. Angiotensin II also stimulates the secretion of the hormone aldosterone from the adrenal cortex. Aldosterone causes the tubules of the kidneys to increase the reabsorption of sodium and water into the blood.
The most reliable record of a Blue Shark at speed is 24.5 miles (39.4 kilometres) per hour for a 6.5-foot- (2-metre-) long individual. The Shortfin Mako (Isurus oxyrinchus) is probably the champion speedster among sharks.
Yes, the Shortfin Mako (Isurus oxyrinchus) is the fastest shark in the world. Though everyone had come to a general consensus about this, there is still debate as to how fast â¦they can actually go - some say that they can only go a little over 20mph, however others say that it has been clocked at 60mph.