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Elastic arteries are also known as conducting arteries because
they carry large volumes of blood away from the heart. They are
large vessels with diameters up to 2.5 cm (1 in.) (Figure 21-2).
The pulmonary trunk and aorta, as well as their major branches
(the pulmonary, common carotid, subclavian, and common iliac arteries),
are elastic arteries. The walls of elastic arteries are extremely resilient because
the tunica media contains a high density of elastic fibers and relatively
few smooth muscle cells.
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What is the function of the elastic fibers found in an arterys walls?
Allow arteries to expand
Are coronary arteries elastic?
Yes, arteries have elastic lamina.
How is the structure of arterioles different from that of arteries?
The wall of the arterioles contain less elastic fibers but more smooth muscle cells than that of the aorta and arteries.
Does tunica media of elastic arteries contains more elastic fibers than muscular arteries?
true
The arterioles muscular arteries and elastic arteries are in what position from heart to capillaries?
left ventricle --> elastic arteries (aorta and its larger branches)--> Muscular arteries --> arterioles --> capillaries
Which blood vessels have elastic fibers?
Arteries contain elastic fibres. These are particularly abundant in the large conducting arteries, such as the aorta.
Why are the differences in the amount of elastic fibers and smooth muscle fibers in the tunica media of elastic arteries and muscular arteries is important to their function?
The elastic arteries are huge and allow for large amounts of blood to go through them. They need elastic fibers so they can stretch and return to their original state--basically they want to make it easy for large amounts of blood to pass through. Muscular arteries are responsible for getting blood to various locations, so they contract and dilate according to the immediate needs of the tissue they are supplying.
What is the function of the muscular walls in the large arteries?
Basically what it does is protect the brain structure.
What blood vessels have elastic quality?
The conducting arteries, which are the high pressure arteries (eg. aorta and pulmonary), are high in elastic fibres. These fibres store energy to help to push blood forward during diastole (heart relaxation).
How is the structure of a cell different from the function of the cell?
actually, there is no difference between the structure and function. The structure usually corresponds with the function. for example, red blood cells are circular shaped so they can easily move through the weins and arteries.
What does the term elastic mean pertaining to arteries?
The term Elastic Arteries usually refers to the ability of blood vessels to dilate and constrict freely.
Do muscular arteries maintain blood flow during ventricular diastole?
The structure of the various blood vessels is closely related to their function. The vessels which receive blood from the heart, the elastic arteries, have thick, strong walls to cope with the sudden high pressure produced during diastole; they contain abundant elastic material to allow stretch so that the vessel lumen may accommodate the change of volume. They also have a thick, outer coat of collagenous connective tissue whose tensile strength prevents over-distension of the elastic tissue. The elastic recoil of these elastic arteries is responsible for maintaining a continuous, though decreased, flow of blood to smaller vessels during systole.http://ect.downstate.edu/courseware/histomanual/cardiovascular.html
