Circulatory system Flashcards
Vessels which carry blood away from the heart
Inferior vena cava
Vessels which carry blood toward the heart
Superior vena cava
Tiny blood vessels with walls that are only one cell thick
Capillaries
Thick wall that divides the heart into two sides
Septum
Upper chambers of the heart that receive blood
Left atrium and right atrium
Lower chambers of the heart that pump blood out of it
Left and right ventricles
Valve between right atrium and right ventricle
Tricuspid valve
Valve between the left atrium and the left ventricle
Mitral valve
Valves found between the ventricles and blood vessels
Pulmonary and aortic valves
Membrane around the heart
Pericardium
The only artery in the body rich in carbon dioxide/carries blood from the heart to the lungs
Pulmonary artery
The only vein in the body rich in oxygen/brings blood from the lungs to the heart
Pulmonary vein
Starting from and ending with the right atrium, trace the flow of blood through the heart and body by putting these in the correct order.
Aorta, pulmonary artery, body cells, pulmonary veins, left ventricle, lungs, right atrium, vena cava, right ventricle, right atrium
- Right atrium
- Right ventricle
- Pulmonary artery
- Lungs
- Pulmonary veins
- Left atrium
- Left ventricle
- Aorta
- Body cells
- Vena cava
- Right atrium
Starting from and ending with the heart, trace the blood flow through the human circulatory system by putting these in the correct order.
Veins, arterioles, capillaries, venules, heart, arteries,
- Heart
- Arteries
- Arterioles
- Capillaries
- Venules
- Veins
- Heart
Blood vessels that carry blood away from your heart to other parts of your body
Arteries
Air sacs where oxygen enters the blood and carbon dioxide leaves the blood
Alveoli
Tubes that branch into smaller and smaller tubes
Bronchioles
Liquid that carries cells, food, waste, and oxygen in the blood stream
Plasma
These form blood clots
Platelets
The exchange of oxygen and carbon dioxide in the blood stream
Pulmonary circulation
Carry oxygen to the body’s cells
Red blood cells
Meaning the whole system
Systemic
Blood vessels form a network through the body
Circulation
A tube that carries air from the larynx to the lungs
Trachea
Blood vessels that take blood from cells back to the heart
Veins
These fight bacteria
White blood cells
How does the diaphragm work to help you breathe?
It moves down and gets flatter to allow air to get in
Which part of your heart is the strongest? Why?
Left ventricle because it pumps all the blood throughout the body
What two things happen in the alveoli?
Oxygen enters the blood and carbon dioxide leaves the blood.
How do the circulatory and respiratory systems work together?
The RESPIRATORY system gets oxygen into the CIRCULATORY system. Then the CIRCULATORY system takes the oxygen, through the blood stream, to other parts of the body.
True or false? Capillaries are only two cells thick.
False. They are only one cell thick.
True or false? The pulmonary artery is the only artery in the body rich in oxygen.
False. It is the only artery rich in carbon dioxide.
True or false? The tricuspid valve is the valve between the right atrium and the right ventricle.
True
The mitral valve is located between what two parts?
Left atrium and left ventricle
If you have a low white blood cell count, what is likely to happen?
You might get sick, because white blood cells fight bacteria. If you don’t have a lot of white blood cells, bacteria can get in your body and make you sick.
Explain the difference between the upper and lower chambers of the heart.
The UPPER chambers (the right and left atria) receive blood, and the LOWER chambers (left and right ventricles) pump blood out of the heart.
Where would you find plasma?
In the blood stream.
On average, people have about how many red blood cells in their body?
20-25 trillion
When a blood vessel is injured, what helps the blood clot and seal the cut?
Platelets
What is the largest artery in the body?
The aorta
The blood gets oxygen from your ———–.
Lungs
What 4 parts make up the blood?
Plasma
Red blood cells
White blood cells
Platelets