Coronary vascular resistance reflexly, Biology

Assignment Help:

Baroreceptor activity affects coronary vascular resistance reflexly. With carotid occlusion, baroreceptor hypotension leads to reflex adrenergic stimulation, increased metabolic activity and secondary vasodilation. When this is prevented by beta blockade, reflex coronary vasoconstriction secondary to carotid hypotension is unmasked. Alpha1 adrenoreceptor stimulation is capable of causing epicardial vasoconstriction in ischaemic myocardium, thereby influencing favourably the transmural distribution of blood flow to the subendocardium during exercise. Activation of chemoreceptors initially causes coronary dilation, a reflex that is mediated by vagi and can be abolished by atropine e.g. Bezold Jarisch reflex.


Related Discussions:- Coronary vascular resistance reflexly

Digestive system - teeth, TEET H - Study of teeth is odontol...

TEET H - Study of teeth is odontology. Accumulation of oral bacteria & their products on teeth is plaque. Some acids are secreted by bacteria causing carries.

Carbohydrates requirements for ulcerative colitis, Q. Carbohydrates require...

Q. Carbohydrates requirements for ulcerative colitis? Carbohydrates: They form the easily absorbable source of energy. Bulk-producing vegetables are restricted so as to allow b

Express the monomer unit of a protein, Describe the monomer unit of a prote...

Describe the monomer unit of a protein and how monomer units are assembled into peptides.

Determine the nutritional needs of humans, Determine the nutritional needs ...

Determine the nutritional needs of humans? In the previous unit, we saw how involvement in sport or vigorous activities can affect the body's nutrient needs. In this unit, we w

How does phosphorus cycle vary from carbon cycle, (a) Trace the succession ...

(a) Trace the succession of plants on a dry bare rock. (b) How does phosphorus cycle vary from carbon cycle?

Criminal Justice, AYou are a sergeant in a community relations unit in a mi...

AYou are a sergeant in a community relations unit in a mid-sized metropolitan police department. Your division commander sent you off to a 1-week ethics school run by the Justice D

Disorders of thyroid function, Disorders of Thyroid Function: The diso...

Disorders of Thyroid Function: The disorders of thyroid function may  lead to following problems:  Juvenile Hypothyroidism Hypothyroidism is one of the most common end

Define the etiology for bulimia nervosa, Define the Etiology for Bulimia Ne...

Define the Etiology for Bulimia Nervosa? Bulimia nervosa is a multifaceted disorder with psycologic, physiologic, developmental and cultural components. There may be a genetic

Goat pox, Goat pox Goat-pox is common in occurrence, and its nature is ...

Goat pox Goat-pox is common in occurrence, and its nature is similar to sheep pox. The incubation period varies from 5 to 10 days. The disease tends to attack male kids and ewe

Genetics, What is the term for the pattern of base pairing between one DNA ...

What is the term for the pattern of base pairing between one DNA strand and its partner in a duplex?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd