1.5 Heart

Question 0

Atrial systole

Answer 0

Atria contract, SL closed, AV open, blood pushed into ventricles

Question 1

Diastole

Answer 1

All chambers relaxed, SL closed, AV open…blood into atria

Question 2

Ventricular systole

Answer 2

Ventricles contract, SL open, AV closed, blood pushed through aorta and pulmonary arteries

Question 3

Cardiac output

Answer 3

Heart rate x stroke volume

Question 4

Cardiac cycle

Answer 4

SAN sends electrical impulse, non conductive tissue stops it getting to ventricles, AVN send next impulse with slight delay, to BOH, ventricles contract apex up

Question 5

Artheroma

Answer 5

Fatty deposits within artery wall, plaque forms of cholesterol and fibres, lumen narrows

Question 6

Thrombosis

Answer 6

Atheroma breaks through lining, clot forms, prevents oxygen and glucose teaching tissue

Question 7

Aneurysm

Answer 7

A balloon like swelling at weakened wall section, fills with blood