the flow of blood through capillaries can be influenced by amounts of the hormome?

Answer 1

Deborah,

If you're asking about hormones that affect blood flow through capillaries:

Adrenaline will increase blood flow through the capillaries (actually, through all the arteries and veins, including the capillaries) of skeletal muscles and decrease it everywhere else.

If you're asking what chemicals will affect the flow of blood through capillaries, then you've asked a much larger question, the answer to which is "The many vasodilators and vasoconstrictors."

Vasodilators come in many forms, from the hormone adrenaline (usually) to the vitamin Niacin (in the form of Nicotinic Acid. The form of Niacin that we usually get in common mulitvitamins is Niacinamide, and it is not a vasodilator) to the gas Nitric Oxide to the amino acid L-Argenine to the amine chemical Histamine to the lipid compounds (made from fatty acids) like the prostaglandins to theobromine, an alkoloid found in chocolate to the explosive liquid nitroglycerin to the pills Viagra or Cialis.

All these will increase blood flow through capillaries. There are many more.

The vasoconstrictors, chemicals that will tighten or narrow capillaries and other vessels and thus decrease blood flow through capillaries, include:

adrenaline (it constricts the capillaries in the skin and intestines)
adenosine triphosphate (the major energy mediator in body)
pseudoephedrine (a decongestant)
norepinephrine (both a hormone and neurotransmitter)
thromboxane (a lipid, a fat)
cocaine

There are many more of these, too.

So norepinephrine as well as adrenaline are hormones that influence the flow of blood through capillaries.


Hormones don't last long in the body. Norepinephrine lasts about 6 minutes, for example, and it takes only a tiny amount to do its work. The same goes for adrenaline, which is closely related, by the way.

I hope this helps.

Answer 2

Adrenaline?

Answer 3

Yes, it can be affected by hormones like adrenaline and sympatheitc hormone.

Answer 4

No it can't but if can be effect by high or low blood pressure

Answer 5

adrenaline..... i think