Arteries

Due to ventricular systole, the blood flows through arteries under pressure in a jerky motion. So it is better for the arteries to be placed deeply as lot of blood loss can occur when damaged if they are placed close to the skin.

Of course heart muscles need a blood supply for the cellular respiratory process as the blood carries the final electron acceptor oxygen which is key to oxidative phosphorylation in humans.

veins have valves. y

Arteries and veins are both in the same size range

(which goes from more than an inch across to too small to be seen).

Capillaries run about 4 microns - or half the diameter of a red blood cell

(which must fold in order to get through them - thus the significance of sickle cell disease).

The difference is mainly in control bars.

MS 2007 has so called ribbon toolbar.

Also 2007 can save documents in .docx format. That is more standardized type of ordinary .doc document.

inverted

Mostly because it has no valves, like veins do, so the flow in carotid arteries is a result of left ventricular contraction.

Sometimes a flow in the carotid artery is due to a blockage and may be called a 'flow void' and this is a serious condition which can dislodge a thrombosis (Blood clot)and allow it to flow in the cardiovascular system as an embolism, which is a freely moving blood clot. It can get stuck in the lungs (pneumothorax) or in the brain (stroke).

SA node

A portion of the inferior/posterior surface of the left ventricle

Right ventricle

AV node

Bundle of HIS

coz it leads to the lungs coz it leads to the lungs coz it leads to the lungs

Infants usually have an abnormal "gallop" heart rhythm and may also have heart murmurs. Sometimes excessive arterial pulses can be seen in the carotid and suprasternal notch arteries, indicating increased pressure in these arteries

Arteries transport blood away from the heart. The superior and inferior vena cavas return blood to the right right atrium.

The carotid artery.

Systemic Arteries carry oxygen rich blood (also called oxygenated blood).

Pulmonary Arteries carry oxygen poor (deoxygenated) blood

Arteries carry arterial blood away from the heart through the aorta and carotid arteries. Venous blood is then circulated back to one of the vena cavas where it enters the right atrium, go's through the tricuspid valve into the right ventricle so that it can be taken through the pulmonary valves to t

he lungs. There, it once again becomes arterial blood, and is taken through the left chambers to the aortic arch and the cycle repeats.

This is to facilitate the exchange of materials between foetus and placenta.

There are valves in veins to prevent backflow. The blood pressure in veins is relatively low and, particularly in the legs and arms, can tend to pool if allowed to backflow. In contrast, there is relatively high blood pressure in the arteries, which prevents the need for valves to control backflow.

Left ventricle

The lingual artery is the branch of the external carotid artery that supplies the tongue with oxygenated blood.

The coronary arteries is, of which there are actually two one right and one left, are the first ones in the coronary supply, i.e. they are the root suplly coming directly from the aorta. Other than the fact that suply so the heart is only during ventricular diastole (I have attempted to explain the point in other questions) the odd thing about the heart is that its arters are terminal. Of course by this i do not mean they just stop they to still turn into cappilary bweds then veins. What I mean is they to not join up to each other as they do in many other organs. The reason they usually do this is so that if there is a blockage somewehre supply to that region is not cut off. Think about it like a stram with holes in it, if you blow water through the straw is will burst out through all the holes. If there was a blockage somewhere in the straw then water will not come from the holes below the blockage. If you make the straw into a loop and blow water through it, even with a blockage the all of the holes will have water coming out of them still. Well if one of the coronary arteries, as there is no loop, the supply to all the heart that comes after the blockage will stop. This mean the heart will no longer receive any oxygen or nutriengs and will lead to a heart attack.

That usually leads to a heart attack, also known as a myocardial infarction.

Right atrium

Tricuspid valve

Right Ventricle

Pulmonary semilunar valve

Pulmonary Artery

Lungs

Pulmonary Vein

Left atrium

Mitral/Bicuspid valve

Left ventricle

Atrioventricular valve

Aorta

AND TO THE REST OF THE BODY

the arteries are designed to steamline the flow of the blood and efficiently move it throughout our body.

What is the diameter of the normal carotid artery?

The pulmonary trunk carries blood from the right ventricle of the heart, then splits into the left and right pulmonary arteries.

Answer: pulmonary trunk/left and right pulmonary arteries

Yes it does.