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!
Arteries - Circulation
The arteries deliver blood from the heart. Figure shows the structure of arteries and the different layers of the vessel wall. The thick walls of these blood vessels, except those of the smallest, are supplied by their own capillary network called vasa vasoram. The arteries serve four main functions:
Figure: Major structures in peripheral blood circulation in mammals. Blood flows from the arteries through the capillaries into the veins (id is internal diameter).
There is a precise control on arterial blood pressure. The nature of the arterial wall and the volume of blood pumped into the arteries determine the pressure. If any of these are changed, the pressure will also change. Normally, arterial blood pressure varies very little as cardiac output and capillary flow is evenly matched.
The elastic properties of arterial walls vary. Close to the heart the arteries are elastic and dampen the oscillations in pressure and flow generated by the contractions of the heart. As the heart relaxes the pressure in the arteries is maintained by a reduction in vessel volume. If the arteries were rigid tubes then the same pressure fluctuations would be experienced by peripheral vessels as that observed when blood leaves the heart.
Spinal nerves: They take their origin from the spinal cord. They are the mixed nerves having both sensory and motor fibres. There are 31 pairs of spinal nerves. The se
Aim: To prove that Carbon dioxide is essential for photosynthesis. Apparatus: A potted healthy plant with long and narrow leaves, a wide mouthed glass bottle, split cork. Chemicals
Describe the different types of respiratory organs found in annelids.
Types of Transport Process in Sieve Tubes The metabolites of all the mesophyll cells around the sieve elements join in a common pool to load via the surrounding transfer cells
Advances in Mineral and Vitamin Nutrition of Livestock Even though, minerals and vitamins as nutrients are as essential as energy and protein, general negligence occurs primari
How does sexual reproduction occur in bacteria? How different are the modalities of bacterial sexual reproduction? Sexual reproduction happens when bacteria incorporate genetic
ENDOPLASMIC RETICULUM Bulk of the cytoplasmic compartment of a cell is occupied by complex , continuous channel system in the form a network of closed membrane bound and
What is the positive atom referred to in ionic bonds and write a monovalent and divalent example.
How plants control the opening and the closing of the stomata? The closing and the opening of the stomata depend upon the necessity of the plant to lose water and heat through
What is the meaning of Paraplegia Paraplegia (from the Greek para, "alongside of," and plegia, "stroke") is a condition in which both lower limbs are paralyzed (quadriplegia i
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