Capillaries

That's what I want to know.

→ layers from alveolus to capillary

①surfactant layer (inside alveolus)

②pneumocyteⅠ(typeⅠ cell) layer

③fused basal lamina (consists of basal laminae of alveolar epithelium and capillary endothelium)

④endothelium (inside capillary)

true

4.6

Glomerulus

easy efficient exchange between air and blood

Arteries have the highest blood pressure out of the three because arteries carry oxygen rich cells which then loses some of its pressure as it goes further away from the heart.

Where blood pressure is lowest would be from the capillaries to the veins because after all the rich oxygenated cells are taken out of the cell and replaced with waste and CO2, the blood pressure becomes much lower. (Also because it is further away from the heart.

False, bone contains capillaries.

If blood vessels become damaged, platelets go 2 the injured area & form a plug which release chemicals that start a cascade 2 clot

Increased blood hydrostatic pressure.

dermis

they get thorn put an ice pak an get immediate attension

so the air can go thought it easily

it has a single tunic- only the tunica interna

1. Study the diagram of a chicken wing. Use the diagram to help you locate certain muscular and

skeletal structures.

2. Thorough washing of hands, countertop and instruments have to be done at the

end to prevent salmonella contamination.

3. Your teacher will give you a chicken wing. Rinse it well with cool water, dry it with paper towels, and

place it in a dissecting tray.

4. Examine the wing at the point where it was removed from the body. Depending on the way the wing

is cut, you might see cartilage and bone marrow.

5. Carefully extend the wing to find out how many major parts it has.

6. Using the scissors, cut down the middle of the skin, starting at the top end of the upper wing. Try not

to cut through the muscles below the skin. Do this by piercing the skin and then slipping the scissors

between the skin layer and the muscle. Cut until you reach the shoulder joint. (See figure 1, Cut 1.)

Only cut through the skin. CAUTION: Cut away from your body and your classmates.

7. Cut down the sides of the skin to make a T-shaped cut. Start at the first cut and cut away from it in

both directions. Peel the skin and cut to loosen it. (Note: the chicken skin can be very difficult to remove.

Take your time peeling it back so as not to damage the tissues underlying it.) (See Figure 2, Cut 2.)

8. Look for yellowish tissue clumped together beneath the skin. This is fat tissue, made of fat cells.

9. Examine the muscles, the bundles of pink tissue around the bones. Find the two groups of muscles in

the upper arm. Hold the arm down at the shoulder, and alternately pull on each muscle group. Observe

what happens on each muscle group. Observe what happens.

Show teacher that you did this. Teacher initials: _____________10. Find the two groups of muscles in the lower arm. Hold down the arm at the elbow, and alternately

pull on each muscle group.

11. Find the tendons--shiny white tissue at the ends of the muscles. Notice what parts the tendons

connect.

Show teacher that you did this. Teacher initials: _____________

12. Remove the muscles and tendons. Find the ligaments, the whitish ribbon like structures between

bones.

Show teacher that you did this. Teacher initials: _____________

CLEAN UP

Dispose the chicken parts according to your teacher's instructions. Wash your

hands with soap and water. Thoroughly wash the lab countertop with 409.

Thoroughly wash the scissors with hot soapy water. Set instruments on a clean

paper towel to dry.

Post Lab activities

1. Color all of the muscles in the wing RED.

2. Color all of the tendons in GREY.

3. Color the locations where you would find ligaments in GREEN.

4. Color the bones YELLOW.

4. Label (with an arrow) the direction the radius and ulna move when the triceps contract.

5. Circle the three joints shown in the diagram.

6. Label the ball and socket joint, hinge joint, and peace.

Capillaries

Applying ice to your ankle decreases the blood flow through nearby capillaries. This occurs because the capillaries constrict to conserve heat.

Arteries carry blood to the tissues, and veins carry blood back to the heart. In betweenare tiny blood vessels so small that red blood cells can pass through single file, allowingthe oxygen to diffuse into the surrounding tissue. These are called capillaries.

Maintain the osmotic pressure of the blood.

he vascular system is made up of the vessels that carry our blood. Arteries carry oxygen-rich blood away from the heart. Veins carry oxygen-poor blood back to your heart. There is one exception to that statement; when the blood starts its vascular system trip at the right side of the heart, it is the pulmonary artery that carries the oxygen-poor blood to the lungs where it exchanges carbon dioxide for oxygen. Then the pulmonary vein carries oxygen-rich blood back to the heart. The blood goes back to the left side of the heart and is pumped out to the rest of the body. The main artery leading from the heart to the rest of the body is called the aorta. As the blood travels, it enters smaller and smaller blood vessels, reaching every cell in the body, dropping off nutrients and picking up waste products and carbon dioxide. The blood then starts the trip back in the veins, entering larger and larger ones as it goes, passing through the liver on the way to drop off waste products. The blood eventually arrives back at the right side of the heart to start the trip all over again.

The capillaries connect arteries and veins. They are found throughout the body.

Capillaries surrounding cells pick up blood containing Water (dissolved in the plasma) and carbon dioxide (on the red blood cells) to bring it back through the veins and to the lungs. If I didn't answer your question or you want to ask more, post a message on my message board!

i think yes i think yes

Arterioles.