Heart

Question 1

Circulation

Answer 1

Also called cardiovascular system

• Transports gasses, nutrients, and waste
• Regulates internal temperature
• Protects against microbes and toxic substances

Question 2

Cardiovascular system

Answer 2

Heart and blood vessels

Question 3

Lymphatic system

Answer 3

Lymph vessels and nodes
- drains excess fluid that seeps out of the capillaries into the body tissues and returns it to the blood

Question 4

Cardiac output

Answer 4

-The amount of blood that flows from each side of the heart per minute
- the two factors affecting cardiac output are stroke volume and heart rate

Cardiac output = stroke volume X Heart rate

Question 5

Stroke volume

Answer 5

Quantity of blood pumped with each beat of the heart (~70mL)

Question 6

Heart rate

Answer 6

Number of times the heart beats per minute, the average being 72bpm
- A low resting heart rate shows good fitness because it means more blood is pumped per beat

Question 7

Left atria

Answer 7

Receives oxygen rich blood from the lungs

Question 8

Right atria

Answer 8

Receives oxygen poor blood from the body

Question 9

Left ventricle

Answer 9

Pumps oxygen rich blood to the body

Question 10

Right ventricle

Answer 10

Pumps oxygen poor blood to the lungs

Question 11

Atria vs ventricle

Answer 11

Atria = enters the heart
Ventricle = leaves the heart

Question 12

What separates the left and right side of the heart

Answer 12

The septum

Question 13

Arteries

Answer 13

All arteries except for the pulmonary artery carry oxygenated blood away from the heart, the pulmonary artery carries oxygen poor blood from the right ventricle to the lungs

Question 14

Pulmonary arteries

Answer 14

Carries deoxygenated blood from right ventricle to the lungs

Question 15

Veins

Answer 15

Carry blood towards the heart which is deoxygenated except for pulmonary vein, which is oxygenated

Question 16

Pulmonary vein

Answer 16

These collect oxygen rich blood from the lungs and carry it to the heart

Question 17

Pathway of blood through the heart

Answer 17

1. Deoxygenated blood enters through the superior and inferior vena cava
2. Deoxygenated blood enters the right atrium
3. This blood is pumped into the right ventricle by the atrioventricular valve
4. The right ventricle pumps deoxygenated blood into the pulmonary artery through the semilunar valve
5. The pulmonary artery pumps this deoxygenated blood into the lungs
6. Oxygenated blood comes in through the pulmonary vein
7. The left atrium pumps blood to the left ventricle through the atrioventricular valve
8. Blood from the left ventricle is pumped to the aorta through the semi lunar valve
9. Oxygenated blood is pumped from the aorta to all parts of the body

Question 18

When a person gets an anesthetic injected into the bloodstream in a capillary it…

Answer 18

It goes into the venules, vein, heart, arteries, and arterioles