Circulation Flashcards
Which blood vessels carry blood away from the heart?
Arteries carry blood from the heart.
What type of blood is carried in pulmonary arteries?
Deoxygenated blood is in the pulmonary artery.
What type of blood is found in the aorta?
Oxygenated blood is found in the aorta.
Which type of blood vessel contains valves?
Veins
In which blood vessel with blood in under the highest pressure?
The blood in the arteries in under highest pressure.
What are the three tissue layers of the arteries?
- Connective tissue
- Muscle tissue
- Epithelial tissue
How many tissue layers are found in capillaries?
One layer - epithelial tissue.
How does pulmonary circulation compare to systemic circulation?
Pulmonary circulation is between the heart and lungs. Systemic circulation is between the heart and the rest of the body.
Where are red blood cells produced?
Red blood cells are made in the red bone marrow.
Which blood cells do not have a nucleus?
Red blood cells and platelets lack a nucleus.
What is the function of red blood cells?
Red blood cells transport oxygen and some carbon dioxide.
What is the function of white blood cells?
White blood cells are responsible for immunity, protecting the body from infection.
What is the function of platelets?
Platelets are responsible for clotting blood when there is an injury.
What are the four functions of blood?
- Regulate body temperature.
- Immunity
- Transport of nutrients and waste molecules.
- Protect body from injury
What are the three components of the circulatory system?
- The heart
- The blood vessels
- The blood
What is the name of the largest artery?
The aorta
Blood returns to the heart from the lower body in which blood vessel?
The inferior vena cava.
What structure separates the right and left side of the heart?
The septum.
When blood return to the heart from the lungs, which heart chamber does it enter.
The left atrium.
Which blood vessels contains valves?
The veins.
Which blood vessels are found closest to skeletal muscles?
The veins.
How are the cells of the heart supported by the circulatory system?
Coronary arteries carry oxygen and nutrients to the cells of the heart.
Which chamber of the heart of is the most muscular and why?
The left ventricle is the most muscular, it must pump blood the farthest. It pumps oxygenated blood to the upper and lower body.
How is heart beat controlled?
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.
