definitions

Question 1

systole

Answer 1

period of contraction

Question 2

diastole

Answer 2

period of relaxation

Question 3

another name for red blood cells

Answer 3

erythrocytes

Question 4

another name for white blood cells

Answer 4

leucocytes

Question 5

myogenic

Answer 5

initiates within the muscle itself

Question 6

septum

Answer 6

separates the 2 chambers of the heart

Question 7

SAN

Answer 7

sinoatrial node

Question 8

AVN

Answer 8

atrioventricular node

Question 9

ECG

Answer 9

electrocardiogram

Question 10

tachycardiac

Answer 10

higher heart rate

Question 11

heart block

Answer 11

delay in conduction between atria and ventricles

Question 12

ventricular fibrillation

Answer 12

uncoordinated and weak contraction

Question 13

atrial fibrillation

Answer 13

atria contract rapidly and irregularly

Question 14

ppO2

Answer 14

partial pressure of oxygen – ability of haemoglobin to take up oxygen

Question 15

associates (haemoglobin)

Answer 15

binding to (=oxyhaemoglobin)

Question 16

dissociates (haemoglobin)

Answer 16

releasing/removing

Question 17

cooperative binding

Answer 17

haemoglobin molecule changes shape to let oxygen bind easier (first is hard, second and third is easy, fourth is v hard)