Veins

Less. The resistance of capillaries causes blood pressure to drop drastically. Also, veins lack the thick muscle surrounding that reflexively maintains blood pressure when the heart relaxes. Veins actually rely on the contraction of the skeletal muscles to maintain circulation. The larger veins also have valves in them to prevent reverse blood flow.

To give you an idea, pressure in the arteries typically varies between 60 and 115 mmHg, depending on whether the heart is contracted or relaxed, whereas in a vein the pressure would be around 5-10 mmHg.

The capillaries are so much smaller than the vena cavas and aorta because these large blood transportation systems are under a lot of pressure. For example, when blood is first emerging from the heart it is being pumped out with extreme amounts of pressure, if the aorta was as small as the capillaries, then it would burst under the pressure causing mass amounts of internal bleeding. On the flipside, the capillaries are farther away from the heart, here the pressure is not nearly as great as it is nearer to the heart, therefore the capillaries do not need to be big, they just need to be large enough to transport nutrients from the blood to the organs.

No.

(Not counting the pulmonary veins)

the least "deoxygenated" blood is in the renal veins and the jugular.

(Neither the brain nor the kidneys use up all the oxygen in their blood supply.)

Blood flow to the skin is sometimes controlled by temperature - heat to be lost - and MAY be less desaturated.

The vena cava is the biggest artery in the body that is attached to the heart, so i would say the cardiovascular system.

it moves toward the heart <apex>

D. Inferior vena cava is not part of the splanchnic circulation. The splanchnic circulation includes the celiac artery, hepatic portal vein, and superior mesenteric artery, which supply blood to the digestive organs. The inferior vena cava returns blood from the lower body to the heart.

I assume you mean "Why do veins in the head and face lack valves?"

The answer is due to being organisms with upright posture. You need valves in your legs to keep the blood from falling down to your feet, and instead propel the blood to your heart. Your head, though, is above your heart, so you don't want valves trapping the blood in the head. That would cause headaches and perfusion issues. So lacking valves allows blood to flow down to the heart.

In common speech, velocity means speed, they are the same thing.

the O-. I personally have AB- and can take only negative blood factors. Yet + blood factors can take - blood factor donations.

Let the clay or gravel dry thoroughly, smash it into a powder, and pan it. The gold will remain in the pan.

I am told that Gold dust can be separated with a gold rocket manufactured by rotapan.I personally havent tried it.I do have a letter into them now asking to send or take some of my samples to be tried.

Hope this helps somewhat.

Poormantoo

cells work together to make tissue and tissue works together to form organs and organs help your systems keep you alive. CELLS, TISSUE, ORGANS, SYSTEMS.

if you want you can ruin your new range but you should change the wall receptical idiot

A netted stinkhorn is a disgusting smelling, capless mushroom that generally grows out of compost or wet mulch. They are not poisonous and are edible, but they are so hideous and stinky that I can't imagine how or why anyone would care to put it anywhere near their mouth. They actually look like a large penis sprouting from the ground. Dreadful!

The parts of the body that have ciliated columnar epithelium include the nose, the trachea, and the uterine tube. The cilia in the nose and trachea help expel foreign particles that should not enter the lungs while the cilia in the uterine tube help move the egg and sperm to the Fallopian tube.

You can carry out a blood glucose test at home by using a blood glucose monitor. The test involves pricking your finger with a lancet, drawing a blood drop, and a test strip sipping up the blood for the monitor. A reading is given telling you the blood glucose level.

The main factors that contribute to blood osmolarity are the concentration of solutes like sodium, potassium, chloride, and glucose in the blood. Hormones like antidiuretic hormone (ADH) and aldosterone also play a role in regulating blood osmolarity by controlling water reabsorption in the kidneys. Imbalances in these factors can lead to changes in blood osmolarity levels.

It might be that at certain times there is a balance between the amount of photosynthesis and the amount of cellular respiration going on. Photosynthesis produces the oxygen that respiration needs. Respiration produces the carbon dioxide that photosynthesis needs.

Hydrothermal gold deposits are formed when hot, mineral-rich fluids rise from deep within the Earth and come into contact with cooler rocks near the surface. As the fluids cool and deposit their minerals, gold can accumulate in cracks and fractures in the rock, forming veins or deposits of gold. These types of deposits are found in association with volcanic or tectonic activity.

The distorted leaves on the Pin Oak may be a result of an infestation by insect pests like gall mites. These mites can cause abnormal growth in the leaves, leading to deformities such as thickened veins and curling. Applying appropriate insecticidal treatments can help control the infestation and prevent further damage to the tree.

The correct method to decrease the incidence of air embolism associated with removal of a central line is to follow ALL standard procedures with removal of the line. Patients should be placed in a supine position, or even T-burg position. The occlusive dressing should be loosened and the suture removed. The patient should be asked to hold their breath when the line is removed quickly. Occlusive dressing is held over the line as it is being removed and thus applied to the insertion site as the line is removed.

A hematoma is a collection of blood outside of a blood vessel, usually due to injury or trauma. It can result in localized swelling and discoloration of the skin, known as a bruise. Hematomas often resolve on their own as the body reabsorbs the trapped blood.

Vena cava filters are usually inserted in to prevent PE caused by a thrombosis in a deep vein (DVT).

The inferior vena cava (or IVC) is the large vein that carries de-oxygenated blood from the lower half of the body into the right atrium of the heart. Other veins entering the atrium are the superior vena cava and the coronary sinus (vein from the heart muscle).

The vena cava (both) are very large veins. All veins carry blood back to the heart. In the case of the vena cava, this is blood from the upper body (superior vena cava) and from the lower body (inferior vena cava).