Circulation

Question 1

Which blood vessels carry blood away from the heart?

Answer 1

Arteries carry blood from the heart.

Question 2

What type of blood is carried in pulmonary arteries?

Answer 2

Deoxygenated blood is in the pulmonary artery.

Question 3

What type of blood is found in the aorta?

Answer 3

Oxygenated blood is found in the aorta.

Question 4

Which type of blood vessel contains valves?

Answer 4

Veins

Question 5

In which blood vessel with blood in under the highest pressure?

Answer 5

The blood in the arteries in under highest pressure.

Question 6

What are the three tissue layers of the arteries?

Answer 6

1. Connective tissue
2. Muscle tissue
3. Epithelial tissue

Question 7

How many tissue layers are found in capillaries?

Answer 7

One layer - epithelial tissue.

Question 8

How does pulmonary circulation compare to systemic circulation?

Answer 8

Pulmonary circulation is between the heart and lungs. Systemic circulation is between the heart and the rest of the body.

Question 9

Where are red blood cells produced?

Answer 9

Red blood cells are made in the red bone marrow.

Question 10

Which blood cells do not have a nucleus?

Answer 10

Red blood cells and platelets lack a nucleus.

Question 11

What is the function of red blood cells?

Answer 11

Red blood cells transport oxygen and some carbon dioxide.

Question 12

What is the function of white blood cells?

Answer 12

White blood cells are responsible for immunity, protecting the body from infection.

Question 13

What is the function of platelets?

Answer 13

Platelets are responsible for clotting blood when there is an injury.

Question 14

What are the four functions of blood?

Answer 14

1. Regulate body temperature.
2. Immunity
3. Transport of nutrients and waste molecules.
4. Protect body from injury

Question 15

What are the three components of the circulatory system?

Answer 15

1. The heart
2. The blood vessels
3. The blood

Question 16

What is the name of the largest artery?

Answer 16

The aorta

Question 17

Blood returns to the heart from the lower body in which blood vessel?

Answer 17

The inferior vena cava.

Question 18

What structure separates the right and left side of the heart?

Answer 18

The septum.

Question 19

When blood return to the heart from the lungs, which heart chamber does it enter.

Answer 19

The left atrium.

Question 20

Which blood vessels contains valves?

Answer 20

The veins.

Question 21

Which blood vessels are found closest to skeletal muscles?

Answer 21

The veins.

Question 22

How are the cells of the heart supported by the circulatory system?

Answer 22

Coronary arteries carry oxygen and nutrients to the cells of the heart.

Question 23

Which chamber of the heart of is the most muscular and why?

Answer 23

The left ventricle is the most muscular, it must pump blood the farthest. It pumps oxygenated blood to the upper and lower body.

Question 24

How is heart beat controlled?

Answer 24

The SA node in the left atrium is the ‘pace maker’. It fires contracting the atria, the impulse causes the AV node to contract the ventricles.

Question 25

What is the name of the oxygen carrying protein in red blood cells?

Answer 25

Hemoglobin.

Question 26

What are the four components of blood?

Answer 26

1. Blood plasma.
2. Red blood cells.
3. White blood cells.
4. Platelets

Question 27

What would be the effect if fibrinogen was not present in blood plasma?

Answer 27

The clotting process would no take place and a person to could bleed excessively.