The Heart

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Which of these is a healthy blood pressure:

120/80

All veins carry dark CO2 rich blood.

False

The pulmonary arteries carry oxygenated blood.

False

A bubo is a lymph node enlarged as a result of infection.

True

The condition of edema describes:

accumulation of excess liquid in tissues

Which veins carry oxygenated blood?

all veins entering the left atrium left pulmonary veins right pulmonary veins

between the left ventricle and the aorta

aortic

Arteries branch into smaller vessels called _____.

arterioles and capillaries

The two heart chambers which receive arriving blood are

atria

Conducts the signal from the atria node to the ventricles

atrio-ventricular node

One of the two thin-walled chambers that receive blood into the heart from the veins

atrium

Microscopic veins and arteries are called

capillaries

The exchange of oxygen and carbon dioxide at the cellular level occurs through the

capillaries

Heart attacks are associated with:

clogged coronary arteries

The relaxation and dilation of the heart chambers during which they are filled with blood

diastole

The condition of elephantiasis is a form of:

edema

A graph detecting the electrical changes in the heart as it beats

electrocardiogram

What is the pericardium?

enclosure around the heart

What is the function of the lymph nodes?

filter and purify interstitial fluids returning to the blood

between the left atrium and the left ventricle

mitral

between the right ventricle and the lungs

pulmonary

A small mass of cardiac muscle that generates a normal heart beat

sino-atrial node

The electrical signals that activate the heart begin in the _________ and are transmitted to the ventricles through the ___________

sino-atrial node , atrio-ventricular node

A group of cardiac cells located in the right atrium, produce an electrical signal and are collectively called the

sino-atrial node.

The contraction of the ventricles, which pumps blood through the aorta and pulmonary arteries

systole

How is blood pressure measured?

systolic - heart pumping diastolic - heart relaxed

Which arteries carry oxygenated blood?

the arteries carrying blood to the body the aorta

Blood flowing to the lungs from the heart flows through

the pulmonary arteries

Why do arteries require thicker walls than veins?

they must withstand systolic pressure

The function of the various heart valves is:

to prevent blood from flowing backward

between the right atrium and the right ventricle

tricuspid

Blood vessels which carry blood to the heart are:

veins super vena cava pulmonary veins

The thick, muscular cavities in the heart which pump the blood

ventricle


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