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Flashcards in The Circulatory System Deck (17):

What is the circulatory system also known as?

The cardiovascular system


What are the three main essential components in the circulatory system, and needs to survive?

Your heart, your blood vessel, and your blood itself


What dose the circulatory system consist of and what are they called?

The circulatory system consists of two circuits the blood travels through; pulmonary and systematic.


What dose the pulmonary circuit do?

Carries blood to the lungs to be oxygenated and then back to the heart. In the lungs, carbon dioxide is removed from the blood, and warm oxygen takes up by the heamoglobin in the red blood cells.


What dose the systemic circuit do?

Carries blood around the body to deliver the oxygen and returns de-oxygenated bloody to the heart. Blood carries nutrients and waste.


How can the amount of blood pumped out be calculated?

Heart rate times stroke volume = cardiac output


What separates the two sides of the heart called and what is it that prevents blood from flowing backwards called?

VALES- prevent the bloody from flowing backwards.
SEPTUM- separates the two sides of the hearts


What dose the right side of the heart do? and what dose the left side of the heart do?

Right side of the heart- pumps deoxygenated blood to the lungs to pick up oxygen.
Left side of the heart- pumps the oxygenated blood from the lungs around he rest of the body.


Describe the heart?

The heart has 4 chambers. The two atria collect the blood. The two ventricles pump the blood out of the heart.


What are the 3 types of blood vessels?



What are arteries?

Carry blood away from the heart (always oxygenated apart from the pulmonary artery which glee to the lungs)
Have thick muscular walls
Have small passageways for blood (internal lumen)
Contain blood under high pressure.


What are veins?

Carry blood to the heart (always de-oxygenated from the pulmonary vein which goes from lungs to the heart).
Have thin walls.
Have larger internal lumen.
Contain blood under low pressure.
Have valves to prevent blood flowing backwards.


What are capillaries?

Found in the muscles and lungs.
Microscopic- one cell thick.
Very low blood pressure.
Where gas exchange takes place. Oxygen passes through the capillary wall and into the tissues, carbon dioxide passes from the tissues into the blood.


What are the four key components that blood has?

Red blood cells.
White bold cells.


What is the plasma, and he platelets?

Plasma- fluid part of blood. Carries carbon oxygen, bore moans and waste.
Platelets- clumps together to form clots. Protect the body by stopping bleeding.


What are red blood cells and white blood cells?

Red blood cells- contain heamoglobin which carries oxygen. Made with bone marrow. The more you train the more red blood cells are made.
White blood cells- An important part of the immune system, they produce antibodies and destroy harmful microorganisms. They are made in the bone marrow.


When dose blood pressure increase?and what can it be affected by?

Increases when you exercise, but is lower at rest when you are fit. It is also effected by age, smoking, stress, diet, and weight.