Capillaries

Becouse of its strong dipole and hydrgen bonds. Water has a property of cohesion and adhesion so it sticks to itself yet climbs the tree using adhesion. Although, in the lab water cannot be replicated to climb as high as trees such as redwoods and even smaller trees like pines. The most it can climb in lab is 23ft. It is still a mystery.

The jugular vein in the neck is one of the largest veins in the body that's anywhere near the surface. It can be sewn together again by a doctor, but in terms of first aid it is vital to plug the hole immediately. This overrides the usual concerns about infection and the like, because a person with a severed jugular will bleed out in a matter of moments. Grab anything handy and press it tightly over the wound; the other jugular on the opposite side of the neck can return the blood from the head, so it doesn't matter much if you completely block the vein on the wounded side. Have someone else call 911.

The brain and spinal cord, which can be thought of as an extension of the brain stem have a few protective mechanisms. The first is the cerebral spinal fluid (CSF) which is like a cushion that bathes the brain. Also there ia a blood-brain barrier created by special cells that line the blood cappillaries that protect the delicate brain tissues from red blood cells (RBC) and certain chemicals, viruses, and medications. Then there are the meninges. They are layers of protective tissue that wrap around the brain and spinal cord much like our cloths protect our bodoes, the first layer is called pia mater. It means delicate mother, and you can think of this as silk underwear. After that the next layer is like our regular clothing, called the arachnoid mater, or just arachnoid, referring to its web-like structure, much like our cloths are webbed, or woven. The third layer is more like a leather jacket and leather pants. This is the 'tough mother' or dura mater. And finally, the brain and spinal cord is protected by a skeletal encasement, the brain in the cranium and the spinal cord in the vertebrae. Think of this like safety gear such as elbow and knee pads, shin guards, helmet, boots, wrist guards, and gloves. Such a complex system as the brain and spinal cord needs lots of layers of protection. I hope this created a complete picture for you so you can vizualize the layers surrounding the brain and spinal cord.

Capillaries are very small in size because they need to have a large surface area so they are able to transport blood all around the body. Blood cells must pass in single file through the capillaries as they are so small.

Blood colloid osmotic pressure

you have 2 lungs. they are both located inside your rib cage, protected by the rib bones.

Alveoli. Singular is alveolus.

When the body is going through inflammation, yes.

Capillaries have very thin walls which are semi-permeable.

It serves the to return deoxygenated blood back to the heart

· Although similar to blood capillaries, lymphatic capillaries differ structurally in the following ways:

· The endothelial cells forming the walls of lymphatic capillaries are not tightly joined. Their edges loosely overlap one another, forming flaplike minivalves. The flaps, anchored by fine collagen fibers to surrounding structures, gape open when the fluid pressure is high in the interstitial space, allowing it to enter the lymphatic capillary.

· Bundles of fine filaments anchor the endothelial cells to surrounding structures so that any increase in interstitial fluid volume separates the cell flaps, exposing gaps in the wall rather than causing the lymphatic capillary to collapse.

In older pediatric patients 2-4 seconds can be considered "normal," but factors such as respiratory status and ambient temperature need to be considered in relation to these times as well. In neonates, because capillaries of the head and/or chest are sometimes used for assessment, different values appear in the literature. An upper limit of 3 seconds is a general guideline, but averages of roughly 2 seconds are considered "normal."

Although you may use water to help get sticky substances such as syrup off your hands, water itself is actually sticky. Water molecules not only stick to each other, but water also sticks to grass, cloth, organic tissues, soil, and paper towels. Plants take advantage of water's stickiness to organic tissues and soil. This movement occurs when the adhesion (the force that attracts the water to other objects) is stronger than the cohesion (the force between the water molecules). Water molecules are naturally attracted to each other. This attraction comes from the temporary hydrogen bonds that they form.

That would be the heart. The pulmonary vein carries oxygenated blood from the lungs to the heart's left ventricle, it then travels through the left atrium and out the aorta into the arteries and then the arterioles. It then enters the capillaries, here the oxygen diffuses into the cells of the body, and carbon dioxide diffused into the capillaries and bloodstream. The blood then continues to the veinoles, veins and back into the heart through the inferior or superior vena cava, into the right ventricle, right atrium and out through the pulmonary artery to collect oxygen from the lungs again. So starting from the beginning, the diagram of blood flow is as follows:

Lungs - pulmonary vein - left ventricle - left atrium - aorta - arteries - arterioles - capillaries - veinoles - veins - superior/inferior vena cava - right ventricle - right atrium - pulmonary artery. And the cycle continues :)

A human hair has an average diameter of 70 mikrometers and a capillary has an average diameter of 7 mikrometers, so that tells us that 1 hair takes about 10 capillaries in width.

You probably have a deviated spetum bleed often caused my using massive amounts of Cocaine.

Whoever wrote the above answer obviously isn't a doctor because I have never used Cocaine a day in my life and I sneezed a small amount of blood this morning.

Capillary refill assesses peripheral blood flow and circulatory status by measuring the time it takes for color to return to the nail bed after pressure is applied. Typically, a healthy capillary refill time is less than 2 seconds in adults. Prolonged refill times may indicate poor circulation, dehydration, or shock. This quick assessment is often performed in emergency settings to evaluate a patient's hemodynamic stability.

Yes, because as you get older your heart also gets older and can't function as well.

CO2 and O2

The purpose of a Capillary Tube is to

allow blood to complete a path between arteries and veins

permit oxygen and nutrients to be absorbed by cells

and provide a means for cell wastes to enter the blood stream

Diffusion due to differences in air pressures.

to allow gas exchange (oxygen and carbon dioxide)

The process is usually referred to as diffusion. This happens when concentrations in different areas interchange to give a more even mixture. Going through a membrane ( in this case the lung's alveoli wall ) would more properly require the process to be called osmosis, but that term is not usually used medically.

to provide them energy of some sort

The oxygen diffuses into the Red Blood Cells (RBCs) in the lungs. The blood goes to the heart and is pumped to the rest of the body. When the blood reaches oxygen deprived tissues, the oxygen moves from the RBCs to the tissues.