Constrict peripheral circulation.
Blood Pressure Question. Mr. L has developed an anaphylactic allergic response to an anesthetic used during surgery. His peripheral blood vessels have dilated and his bronchioles have constricted; his blood pressure is too low to measure and he is having difficulty breathing. The doctor has called for an emergency injection of epinephrine.  From Wikipedia, the free encyclopedia. Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. For example, vasoconstriction is a hypothermic preventative in which the blood vessels constrict and blood must move at a higher pressure to actively prevent a hypoxic reaction. ATP is used as a form of energy to increase this pressure to heat the body. Alpha type receptors. Alpha receptors are found in smooth muscle surrounding blood vessels of peripheral circulation. Stress → epinephrine → muscles contract → constrict peripheral circulation → direct blood to essential organs for responding to stress (heart, lungs, skeletal muscle).  it causes the heart muscle to pump stronger and faster, and the autoregulatory mechanisms in the heart cause coronary vasodilation to provide more blood flow to accomodate the increased work that the heart must do. but again, epinephrine does not directly cause coronary vasodilation. Best Answer: A hormone secreted by the adrenal medulla that is released into the bloodstream in response to physical or mental stress, as from fear or injury. It initiates many bodily responses, including the stimulation of heart action and an increase in blood pressure, metabolic rate, and blood glucose concentr Epinephrine, also known as adrenaline, is a medication, hormone and neurotransmitter. As a medication it is used for a number of conditions including: anaphylaxis, cardiac arrest, and superficial bleeding. Inhaled epinephrine may be used to improve the symptoms of croup. Epinephrine does this by its effects on alpha and beta receptors. It is found in many animals and some one cell organisms. Jokichi Takamine first isolated epinephrine in 1901. Its wholesale cost is between 0.10 and 0.95USD a vial. Epinephrine is normally produced by both the adrenal glands and certain neurons. It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart, pupil dilation, and blood sugar. Epinephrine does this by its effects on alpha and beta receptors. It is found in many animals and some one cell organisms. Jokichi Takamine first isolated epinephrine in 1901. Its wholesale cost is between 0.10 and 0.95USD a vial. Epinephrine acts on alpha receptors causing vasoconstriction and on beta receptors causing vasodilation. The affinity of epinephrine for beta receptors is somewhat greater than its affinity for alpha receptors. When given in low doses, or by slow IV infusion in humans, the beta effects of epinephrine may predominate.  Epinephrine is used as a drug to increase peripheral resistance via alpha-stimulated vasoconstriction in cardiac arrest and other cardiac dysrhythmias resulting in diminished or absent cardiac output, such that blood is shunted to the body's core. Best Answer: A hormone secreted by the adrenal medulla that is released into the bloodstream in response to physical or mental stress, as from fear or injury. It initiates many bodily responses, including the stimulation of heart action and an increase in blood pressure, metabolic rate, and blood glucose concentration
http://faculty.alverno.edu/bowneps/BI%20231%20course%20documents/practice%20questions%20-respiration%20through%20reproduction_files/blood%20pressure%20question%20key.html https://en.wikipedia.org/wiki/Vasoconstriction http://www.columbia.edu/cu/biology/courses/c2006/lectures08/xtra15-08.html https://answers.yahoo.com/question/index?qid=20070326105345AAZYuGb https://en.wikipedia.org/wiki/Epinephrine https://en.wikipedia.org/wiki/Epinephrine http://forums.studentdoctor.net/threads/is-epinephrine-a-vasodilator-or-a-vasoconstrictor.853340/ https://answers.yahoo.com/question/index?qid=20070326105345AAZYuGb
what does epinephrine do to peripheral vessels