Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Veins - Circulation
The veins bring back the blood from the capillaries to the heart. They form a large volume low pressure system. The vessels have a larger internal diameter. In mammals 50% of the total blood volume is present in the veins and pressure is approximately 10-5 mm Hg. If there is any blood loss, the venous volume is decreased and not the arterial volume. So that arterial blood pressure and capillary blood flow is maintained. Flow of blood in veins is affected by several factors. Pressure exerted by the diaphragm on the gut and activity of the limbs both help to squeeze the veins of those regions.
This squeezing and action of pocket valves (that prevent back flow) help the flow of blood towards the heart. Breathing in mammals also helps in drawing the blood from the veins in the head and abdominal cavity. Smooth muscles in veins also help in regulating blood supply in the venous system. When a person changes his position from sitting to standing the change in the relative position of heart and brain with respect to gravity activates the nerve fibres that are present in the veins of the limb. This causes a contraction of the smooth muscles. The pooled blood is thus, redistributed.
Explain Starch - Tests for the Presence of Exoenzymatic Activity? Starch is a polymer of glucose linked together by glycosidic bonds. Microorganisms produce hydrolytic enzyme a
How does circulatory system works in cockroach?
What do you understand by Mesocoel? The middle of three coelomic spaces found in tripartate body plan characteristic of deuterostome lineage of animals. Other coelomic compartm
using a specific example describe how hormones have an important role in the regulation of body functions and also, what happens if there is an over secretion or an under secretion
Q. Risk Factors for GDM? If any of the following risk factors are present in a woman, she may develop GDM: 1) Presence of obesity. 2) If any family members (parents, brot
Q. Counselling at Diagnosis? A newly diagnosed case of diabetes will have lots of questions and will be confused regarding the treatment and complications of the diabetes. It i
Explain the Uses of ISP in Infant formulas Infant formulas Infant formulas, where milk solids have been changed by soy products, are well established commercial products
Counseling is a process whereby a qualified person purposefully assists another person to handle his or her problems. Counselling is not just giving advice. It is dependent on mut
Why acquired traits are not directly related to the process of evolution? As acquired traits are not genetically determined, they cannot be passed on to offspring. Thus, they
What is the plasma membrane of the cell? What are its main functions? The plasma membrane is the outer membrane of the cell; it delimits the cell itself and a cell interior wit
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd