Where precisely is the heart located?
Ans- The heart sits in the mediastinum (the space between the lungs), just a
little to the left of the center in most people (2/3 of the heart is left of
center, while 1/3 is right).
How many chambers does the heart have? How many on the right? How many o...
Ans- The heart sits in the mediastinum (the space between the lungs), just a
little to the left of the center in most people (2/3 of the heart is left of
center, while 1/3 is right).
How many chambers does the heart have? How many on the right? How many on
the left? What are the two larger chambers called? What are the two smaller
chambers called?
Ans- The heart has 4 chambers (2 on each side). The larger chambers are
called ventricles, and the smaller ones are called the atrium.
,What is the name of the wall which separates the right side of the heart from
the left?
Ans- This wall is called the septum
Describe the job of each atrium. Describe the job of each ventricle.
Ans- The Atria receive blood from either the body (RA) or the lungs (LA). The
ventricles receive blood from the Atria, and then pump it from the heart to the
body (LV) or the lungs (RV).
What is the pulmonary circulatory pathway? What is the systemic circulatory
pathway? describe the oxygenation of the blood and all parts of each pathway.
Ans- The pulmonary circulatory pathway describes the flow of deoxygenated
blood from the right ventricle to the lungs via the pulmonary arteries.
Oxygenated blood then returns to the left atrium from the lungs by for
pulmonary veins. The systemic circulatory pathway describes the flow of
oxygenated blood from the left ventricle to the body via the aorta.
Deoxygenated blood then returns to the right atrium from the body via the IVC
and SVC and coronary sinus.
, How many great vessels are there? What are their names? Where do they
begin, and where do they end?
Ans- there are five great vessels. 1: Aorta from the left ventricle to the body.
2: Pulmonary arteries from the right ventricle to the lungs. 3: SVC from the
upper body to the right atrium. 4: IVC from lower body to right atrium. 5:
Pulmonary veins from lungs to the left atrium.
How many vessels bring blood back to the right atrium? What are their names?
Ans- There are three vessels which bring blood back to the right atrium. They
are the inferior vena cava (IVC) from the abdomen and lower extremities, the
superior vena cava (SVC) from the head and upper extremities, and the
coronary sinus (CS) from the heart walls themselves.
How many vessels bring blood back to the left atrium? What are their names?
Ans- There are four vessels which bring blood back to the left atrium. They
are all pulmonary veins, upper and lower from each lung.
Define the following four terms, and give the normal range for each: stroke
volume:
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