Week 1 - Lesson 2 (Part 1)

Question 1

What is the circulatory system?

Answer 1

A system of connecting arteries and veins

Question 2

What does the circulatory system allow?

Answer 2

The heart to move blood from the systemic to pulmonary circulation and back

Question 3

What is the systemic system between?

Answer 3

The heart and the rest of the body

Question 4

What is the pulmonary system between?

Answer 4

The heart and the lungs

Question 5

What cavity is the heart located in?

Answer 5

The thoracic cavity

Question 6

Where is the heart situated between?

Answer 6

The lungs

Question 7

What is the heart posterior to?

Answer 7

The sternum

Question 8

Where is the heart located?

Answer 8

In the middle of the mediastinum

- 3/4th intercostal space

Question 9

What is the heart enclosed in?

Answer 9

A pericardial sac

Question 10

What kind of fluid is in the pericardial sac?

Answer 10

Serous fluid

- 10-20ml

Question 11

What does serous fluid help the heart with?

Answer 11

Lubrication for beating

Question 12

How many chambers does the heart have?

Answer 12

4

Question 13

Where is the apex of the heart?

Answer 13

At the top of the left ventricle

Question 14

What are the superior borders of the heart?

Answer 14

The atria chambers

Question 15

What is the lower border of the heart?

Answer 15

The apex

- blunt end

Question 16

What are the 2 atria chambers known as?

Answer 16

The collecting chambers

Question 17

What are the 2 ventricle chambers known as?

Answer 17

The pumping chambers

Question 18

How many valves does the heart have?

Answer 18

4

Question 19

What are the 4 valves of the heart? (2)

Answer 19

1. 2 atrioventricular valves
   - AV valves
2. 2 semilunar valves
   - SL valves

Question 20

What do valves do?

Answer 20

They maintains uniform direction of blood flow

Question 21

Where is the AV valves located?

Answer 21

Between the atria and the ventricles

Question 22

What are the 2 AV valves?

Answer 22

1. Tricuspid valve
   - right side
2. Bicuspid valve
   - left side

Question 23

What is another word for the bicuspid valve?

Answer 23

Mitral valve

Question 24

How many leaflets is the tricuspid valve?

Answer 24

3

Question 25

How many leaflets is the mitral valve?

Answer 25

2

Question 26

What are the 2 SL valves?

Answer 26

1. Aortic valve

2. Pulmonary valve

Question 27

How many leaflets does the SL valves have?

Answer 27

3

Question 28

Where is the SL valves located?

Answer 28

Between the ventricles and the great vessels