The Heart Flashcards
What side of the heart pumps DEOXYGENATED blood? Where does this go?
The RIGHT side (LEFT IN THE EXAM) and this goes to the LUNGS.
What side of the heart pumps OXYGENATED blood? Where does this go?
The LEFT side (RIGHT IN THE EXAM) ands this goes around the body.
The heart has 4 chambers, name them:
- Left atrium
- Left ventricle
- Right atrium
- Right ventricle
The heart has 4 blood vessels, name them:
- Pulmonary artery
- Vena cava
- Aorta
- Pulmonary vein
The heart has VALVES, why?
To prevent BACKFLOW of blood and to ensure a UNIDIRECTIONAL flow of blood. They also ensure the PRESSURE of the blood is MAINTAINED.
On the oxygenated side of the heart (RIGHT IN THER EXAM), why are the walls thicker?
To create more FORCE and PRESSURE to pump blood around the BODY.
What is the name given to the thing which separates the two side of the heart?
The septum.
What does the term ‘double circulation’ mean’?
Blood flows through the heart TWICE in ONE CIRCULATION.
Valves in the heart can be faulty, what are the possible effects could a faulty valve havre on the functioning of a heart? What effect could this have on the person themselves?
Blood may flow backwards into atrium. They could have symptoms such as tiredness as there is LESS OXYGEN for RESPIRATION. They could also be quite PALE as LESS BLOOD is reaching the skin surface.
Which blood vessels supply the heart muscle with blood?
Coronary arteries.
How can exercise benefit the circulatory system?
It STRENGTHENS the heart muscle and INCREASES the CARDIAC OUTPUT at REST.
What is the cardiac output?
The volume of blood pumped by the heart per minute.
What is the ‘recovery rate’? Will this be longer or shorter for people who exercise regularly?
The time it takes for the pulse or heart rate to return to normal after exercise. This will be shorter for those people.
When we exercise, why does our hear† muscle need more energy?
As it is contracting more often and more vigorously so the heart needs to pump more blood to our muscles so they can get more oxygen and glucose for respiration.
On a graph, how could you determine out of two people, who was fitter? (LLSS)
- Fitter individual would have a lower resting breathing rate.
- The fitter individual’s heart rate does not increase as fast as the unfit person.
- The fitter individual has a lower maximum heart rate.
- The fitter individual has a shorter recovery time.
During exercise, as well as an increased heart rate: what happens in terms of blood pressure?
You have a higher blood pressure.
