Capillaries

They can only go one at a time in a capillary.

Epithelial tissue exists in stratified and single layers.

exchange of fluid that occurs across the capillary membrane between the blood and the interstitial fluid. This fluid movement is controlled by the capillary blood pressure, the interstitial fluid pressure and the colloid osmotic pressure of the plasma. Low blood pressure results in fluid moving from the interstitial space into the circulation helping to restore blood volume and blood pressure.

It entirely depends on what is in the nasal spray. If it is saline spray, then it doesn't really do anything to the capillaries per se. If it is a decongestant then it causes constriction of the capillaries (which will tend to open up the nasal airway). If it is H1N1 influenza spray, then it uses your capillaries to deliver virus to the rest of your body.

Vasa Recta

It is not only important, it follows the laws of physics. As a liquid moves from an area of higher concentration to an area of lower concentration the pressure drops. If it stayed the same, either your heart or your capillaries would explode.

Almost everywhere in the body few exceptions.

explain why low capillary pressure is desirable

Sphincters

Capillary water is held in the capillary pores (micro pores). Capillary water is retained on the soil particles by surface forces. It is held so strongly that gravity cannot remove it from the soil particles. The molecules of capillary water are free and mobile and are present in a liquid state. Due to this reason, it evaporates easily at ordinary temperature though it is held firmly by the soil particle; plant roots are able to absorb it. Capillary water is, therefore, known as available water. The capillary water is held between 1/3 and 31 atmosphere pressure.

Gravitational water occupies the larger soil pores (macro pores) and moves down readily under the force of gravity. Water in excess of the field capacity is termed gravitational water. Gravitational water is of no use to plants because it occupies the larger pores. It reduces aeration in the soil. Thus, its removal from soil is a requisite for optimum plant growth. Soil moisture tension at gravitational state is zero or less than 1/3 atmosphere.

the artery carry the blood to smaller arteries called atrioles; this blood is then carried to the capillaries which split up into many channels to collect and to give what is needed in the body.

The venules (small veins)

yes ! to insure linearity

Two primary gases are found in the blood stream. Leaving the capillaries and going out into the tissue is OXYGEN which was carried by the hemoglobin in the red blood cell. Leaving the tissue and entering the capillary is CARBON DIOXIDE or "CO2" which is transported via carbonated water (aka carbonic acid) in the plasma of the blood stream.

An increase in capillary pressure will shift fluid into or out of the capillaries

function of anchoring filaments are to held open the lymphatic capillaries. Datuna

yes. veins carry de-oxygenated blood back from parts of the body towards the heart where it is pumped to the lungs. arteries carry oxgenated blood away from the heart towards parts of the body

The body cells surrounding the capillary usually have low concentrations of oxygen and nutrients, but high concentrations of carbon dioxide and other waste products.

A liquid has two properties (amongst many) called cohesion and adhesion. Cohesion is the force of attraction between molecules/atoms of the liquid itself. Adhesion is the force of attraction between the molecules/atoms of the liquid and other substances. Therefore, if the molecules' attraction for another substance is greater than the attraction between the molecules, the molecules will preferentially interact with the other substance. When you have a substance that is more attracted to the walls of a capillary tube than itself (i.e. adhesion > cohesion), the substance will exhibit capillary action and form a concave meniscus. Mercury, however, has a stronger cohesive force between its atoms than adhesive force to the walls of a capillary tube, and therefore will not preferentially interact with the tube, thus not demonstrating capillary action and forming a convex meniscus. Curved surfaces have a higher pressure (called LaPlace pressure) on the concave side of the curve than on the convex side. Because mercury has a convex meniscus it has a lower LaPlace pressure in the capillary than the surrrounding liquid. It will therefore show a capillary drop rather than the more common capillary rise seen with materials that have a concave meniscus like water.

The Lymphatic System.

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It occurs naturally and is developed by the body according to where the most blood is needed. One of the densest areas of capillaries are in our intestinal area.

Coroid Plexus

Lymph is formed from blood during capillary exchange and rejoins the bloodstream later is true.

if a capillary bursts it is no biggie. it is just like getting a paper cut. you don't bleed a lot because in capillaries it is easy for platelets to heal it.