Human Anatomy and Physiology: The Heart

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filariasis

A disease caused by roundworms blocking lymphatic channels

electrocardiogram

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

hypertension

Blood pressure that is too high

artery

Blood vessel leaving the heart

veins

Blood vessels returning to the heart

atrioventricular node

Conducts the signal from the sinoatrial node to the rest of the heart

myocardial infarction

Death of heart muscle due to absent blood supply

buboes

Greatly enlarged lymph nodes as a result of infection

elephantiasis

Massive elephant-like swelling of the lower parts of the body due to filariasis, a tropical infectious disease

atrium

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

coronary

Refers to the arteries that supply blood to the heart

arteriole

Small artery

venule

Small vein

Purkinji fibres

Specialized electrical conducting fibres in the heart

edema

Swelling of part of the body due to accumulated interstitial fluid

systemic

That part of the circulation that supplies all the body except the lungs

bubonic plague

The black death, a recurrent epidemic disease during the Middle Ages

systole

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

myocardium

The heart muscle

thoracic duct

The large lymphatic vessel that collects lymph from the lower half of the body and dumps it into the blood circulation

interstitial fluid

The liquid that surrounds the cells in the body, lymph

vagus nerve

The major autonomic nerve controlling the body's automatic functions

bicuspid valve

The mitral valve

sinoatrial node

The normal pacemaker of the heart

diastole

The relaxation and dilation of the heart chambers that allows them to fill with blood

pericardium

The sac around the heart.

ventricle

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

mitral valve

The valve between the left atrium and the left ventricle

aortic valve

The valve between the left ventricle and the aorta

tricuspid valve

The valve between the right atrium and the right ventricle

pulmonary valve

The valve between the right ventricle and the pulmonary artery

endocardium

Thick, fibrous inner layer of the heart

epicardium

Thin filmy tissue surrounding the heart

capillary

Tiny blood vessels between arterioles and venules

lymph

lymphatic, Interstitial fluid that is transported in lymphatic vessels


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