Capillaries

1.They are single cell thick

2.Thin film of moisture covering the alveoli allows the oxygen to dissolve in therefore making the process efficient

3. they have a large surface area

4.they are surrounded by network of blood capillaries maintaining the concentration gradient for the gaseous exchange

materials exchange between blood cells and blood

Capillaries must allow diffusion too allow for exchange of oxygen. Without oxygen, the eventual consequence would be death.

i dont knw sorryt6

i KNOW ONLY 2. They are : Carbon dioxide & excretory products

In the alveoli

Oxygen is exchanged for carbon dioxide.

1. can do evrithin you decide ;)

Yes, they are very narrow (1 Red Blood Cell in diameter).yes.they have lumen so that erythrocytes can moves through theb,

Purple or blue

The blood becomes red when it gets contact with oxygen

this is why when you get blood drawn it looks purple or blue

Blood is a liquid connective tissue whose main job is transportation of nutrients and wastes. An analogy would be streets and highways with the roads being the blood vessels and the cars, trucks, and motorcycles being the blood. In this model, the driveways would be the capillaries and the houses and buildings would be the cells in the body.

They look like little checker pieces that are red and blue and sometimes white.

Oxygen and Carbon Dioxide.

Broken capillaries are commonly found on the cheeks or nose area these appear as small red / pink threads under the skins surface, most. Broken capillaries occur when the capillary walls narrow and widen too quickly causing the muscles int he walls to tear. This in turn allows the blood to seep out resulting in broken capillaries.

Dehydrated, dry and sensitive skins often have thin skin that provides less protection and therefore, these skin types are the most commonly effected.

Common causesof broken capillaries are:

1. Hot conditions

2. Wind blowing on the face

3. Burnign i.e. sunburn

4. Moving from one extreme temperature to another

5. Pressure i.e. squeezing spots or glasses pressing on the face

Broken capillaries can be prevented by avoiding all of the above. Once formed they can be treated by a specialist form of electrolysis. There are also specialist creams on the market that aim to strengthen the capillary walls thus reducing the redness.

Can you answer this question

Artery is not an organ it is a means to carry pure blood from the heart to different organs.

Arteries when approach near any organ it divides into arterioles.

When arterioles enter the organ it again divides as blood capillaries.

Blood flows from the heart and aorta into large vessels called arteries, these arteries decrease in size as they move into tissues and are then called arterioles with just a few layers of cells. Arterioles then become capillaries that have a single cell layer. Capillaries then empty into venules, which then enter veins and return blood back to the heart to start the process over again!

Arterioles carry blood in the direction away from the heart. The order of vessels from the heart is: arteries>arterioles>capillaries>venules>veins.

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).

Since there are no valves between the pulmonary capillaries and the left atrium, PCWP is a reflection of the LAP. During diastole, when mitral valve is open, the PCWP reflects LVEDP. LVEDP is an index of left ventricular end-diastolic volume. Here is a helpful URL to further clarify this entry. http://medind.nic.in/iad/t02/i4/iadt02i4p298.pdf

Arteries, becuase they are directly pumped by the heart while veins are pumped some by your heart and some by muscle movement.

Arteries have thicker walls as well to cope with the greater pressure.

gaseous exchange takes place when the volume of the chest cavity is increased or decreased.

Yes it is true that the growth of a new capillary supply into the region produces granulation tissue. Phagocytes are non bony debris at the fracture site is removed by osteoclasts.

Cartilages and epithelial cells