Describe the Structure of Blood Vessels



Compare and contrast the three tunics that make up the walls of most blood vessels. Although the ABO blood group name consists of three letters ABO blood typing designates the presence or absence of just two antigens A and B.


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There are three distinct layers or tunics that form the walls of blood vessels Figure 2.

. The ABO Blood Group. Blood vessels function to transport bloodIn general arteries and arterioles transport oxygenated blood from the lungs to the body and its organs and veins and venules transport deoxygenated blood from the body to the lungsBlood vessels also circulate blood throughout the circulatory system Oxygen bound to hemoglobin in red blood cells is the most critical nutrient carried by. Describe the basic structure of a capillary bed from the supplying metarteriole to the venule into which it drains.

Structure of the Heart. They are the smallest blood vessels in the body. The outer hard layer of the bone is referred to as compact bone and has few spaces.

The first tunic is a smooth inner lining of endothelial cells that are in contact with the red blood cells. Arteries and arterioles have thicker walls than veins and venules because they are closer to the heart and receive blood that is surging at a far greater pressure Each type of vessel has a lumen a hollow passageway through which blood flows. Human beings are arguably the most complex organisms on this planet.

The heart is enclosed in a pericardial sac that is lined with the parietal layers of a serous membraneThe visceral layer of the serous membrane forms the epicardium. Distinguish between elastic arteries muscular arteries and arterioles on the basis of structure location and function. Introduction to the Human Body.

Different types of blood vessels vary slightly in their structures but they share the same general features. They convey blood between the arterioles and venulesThese microvessels are the site of exchange of many substances with the. Name all structures vessels heart chambers and others passed through en route.

Hypodermis Deep to the dermis is a layer of loose connective tissues known as the hypodermis subcutis or subcutaneous tissue. Capillaries are composed of only the tunica intima consisting of a thin wall of simple squamous endothelial cells. Differences in Physical Structure.

Layers of the Heart Wall. Blood vessels are made up of two main cell types. The internal part of bone also called spongy tissue is porous and harbors the bone marrow and blood vessels.

The structure of the different types of blood vessels reflects their function or layers. The reticular layer also contains blood vessels to support the skin cells and nerve tissue to sense pressure and pain in the skin. Imagine billions of microscopic parts each with its own identity working together in an organized manner for the benefit of the total being.

The properties of the BBB are largely manifested within the ECs but are induced and maintained by critical interactions with mural cells immune cells glial cells and neural cells which interact in the neurovascular unit. Trace the pathway of a carbon dioxide gas molecule in the blood from the inferior vena cava until it leaves the bloodstream. ECs that form the walls of the blood vessels and mural cells that sit on the ablumenal surface of the EC layer.

A capillary is a small blood vessel from 5 to 10 micrometres μm in diameter. The structure of bones is a combination of living and dead cells embedded in a matrix. The purpose of.

The type of nitrates used and the administration route differs depending on the type of cardiovascular disease. Nitrates exert their effects by dilating venous vessels coronary arteries and small arterioles. Nitrates were first discovered in 1847 as a treatment for chest pain.

Its maximal vasodilation is in the venous vessels. The human heart is a four-chambered muscular organ shaped and sized roughly like a mans closed fist with two-thirds of the mass to the left of midline. People whose erythrocytes have A antigens on their erythrocyte membrane surfaces are designated blood type A and those whose erythrocytes have B antigens are blood type B.

The human body is a single structure but it is made up of billions of smaller structures of four major kinds.


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