Blood & Heart

Question 1

What proportion of blood is plasma?

Answer 1

55%

Question 2

What components are in plasma?

Answer 2

water (90%), proteins and other solutes

Question 3

What elements are in the blood?

Answer 3

Platelets, WBC and RBC

Question 4

What is the function of the blood (3)?

Answer 4

transport - oxygen, nutrients, waste
regulation - homeostasis, pH, body temp, osmotic pressure
protection - blood clots after injury, WBC against pathogens

Question 5

What is the negative feedback loop called that produces RBC?

Answer 5

Erythropoiesis

Question 6

What is another name for RBC?

Answer 6

Erythrocytes

Question 7

What is meant by Hypoxia?

Answer 7

cellular O2 deficiency

Question 8

What does the kidney release?

Answer 8

Erythropoietin (hormone that speeds up maturation of RBC)

Question 9

What are proerythroblasts?

Answer 9

RBC before they mature (found in bone marrow)

Question 10

What do proerythroblasts mature into?

Answer 10

Reticulocytes

Question 11

What are the 4 blood types?

Answer 11

A, B, AB and O

Question 12

What is the universal recepient?

Answer 12

AB

Question 13

What is the universal donor?

Answer 13

O

Question 14

What valve is in the right atrium?

Answer 14

Pulmonary valve

Question 15

What valve is in the left atrium?

Answer 15

Mitral valve

Question 16

What valve is in the right ventricle?

Answer 16

Tricsupid valve

Question 17

What valve is in the left ventricle?

Answer 17

Aortic valve

Question 18

What side of the heart has deoxygenated blood?

Answer 18

right

Question 19

Do veins take blood to or away from the heart?

Answer 19

to heart from lungs

Question 20

Explain the process of blood

Answer 20

Add

Question 21

What does systolic mean?

Answer 21

peak blood pressure

Question 22

What does diastolic mean?

Answer 22

lowest blood pressure

Question 23

Do atrium or ventricles have highest pressure?

Answer 23

ventricles

Question 24

Where is the SA node?

Answer 24

right atrium

Question 25

What is the SA node's function?

Answer 25

natural pacemaker

Question 26

Where is the Bundle of His?

Answer 26

branches to the L/R ventricles (connects to the Purkinje fibres)

Question 27

What is the role of Purkinje fibres?

Answer 27

depolarisation of the ventricles, to contract upwards (side of the heart)

Question 28

Is the contraction of the heart depolarization or repolarisation?

Answer 28

depolarisation

Question 29

What does ECG stand for?

Answer 29

Electrocardiogram (determines signals/periods between waves)

Question 30

What does the P wave show?

Answer 30

atrial depolarization (contraction)

Question 31

What does the QRS wave show?

Answer 31

ventricular depolarisation (contraction)

Question 32

What deos the T wave show?

Answer 32

ventricular repolarisation (relaxation)