Mass Transport

Question 1

Affinity

Answer 1

the strength of the attraction between two molecules

Question 2

Bohr shift

Answer 2

where an increase in carbon dioxide partial pressure (pCO2) in the blood causes hemoglobin to release oxygen more readily at the tissues.

Question 3

Loading/Associating

Answer 3

the process of a substance, often a nutrient or oxygen, being taken up into a cell or compartment, typically against its concentration gradient, requiring energy

Question 4

Atrioventricular Node

Answer 4

The atrioventricular (AV) node delays the electrical impulse from the sinoatrial (SA) node, allowing the atria to fully contract before the ventricles. It then transmits the impulse to the Bundle of His for ventricular contraction.

Question 5

Bundle of His

Answer 5

It acts as a pathway, transmitting electrical signals from the atrioventricular node (AV node) to the ventricles, coordinating their contraction.

Question 6

Diastole

Answer 6

Phase of a heartbeat when it relaxes

Question 7

Metabolism

Answer 7

The sum of all the chemical reactions in the body

Question 8

Myocardial infarction

Answer 8

A heart attack

Question 9

Myogenic

Answer 9

the heart’s ability to generate its own electrical signals and contractions without external nerve stimulation.

Question 10

Stroke volume

Answer 10

the amount of blood that is pumped out of the heart’s left ventricle with each beat

Question 11

Systole

Answer 11

The contraction of the heart

Question 12

Cardiac output equation

Answer 12

heart rate x stroke volume

Question 13

Arteries

Answer 13

Carry blood away from the heart

Question 14

Arterioles

Answer 14

Small arteries that regulate blood flow into capillaries

Question 15

Capillaries

Answer 15

Tiny vessels where exchange of gases, nutrients and waste occurs

Question 16

Venules

Answer 16

Small veins that collect blood from capillaries

Question 17

Veins

Answer 17

Carry blood back to the heart

Question 18

Hydrostatic pressure

Answer 18

Pressure exerted by a liquid

Question 19

Oncotic pressure

Answer 19

The tendency of water to move into the blood by osmosis

Question 20

Sinoatrial Node (SAN)

Answer 20

Located in right atrium and acts as a pacemaker

Question 21

Purkinje Fibers

Answer 21

Branch into the walls of the ventricles

Question 22

What happens in diastole

Answer 22

Chambers relax
AV valves open
Blood goes from atria to ventricles

Question 23

What happens in atria systole

Answer 23

Atria contract
AV valves are open
Blood goes from atria to ventricles (actively)

Question 24

What happens in ventricular systole

Answer 24

Ventricles contract
Semilunar valves open
Blood goes from ventricles to aorta/pulmonary artery