Topic 12: Cardiovascular System - Chambers and Skeleton

Question 1

What does the right atrium include? (2)

Answer 1

• inferior and superior vena cava
• coronary sinus (posterior)

Question 2

Where does blood mostly go first?

Answer 2

• right atrium
  its always right to try

Question 3

What does the left atrium include?

Answer 3

• 4 pulmonary veins
• in lecture, it collects blood going back from lungs, which is oxygenated cuz of gas exchange

Question 4

What does the right ventricle include? (2)

Answer 4

• pulmonary trunk
• trunk divides into 2 pulmonary ventricles
• in lecture, it pumps to lungs

Question 5

What does the left ventricle include?

Answer 5

• aorta
• in lecture, it pumps to everything else (oxygenated blood)

Question 6

What are septa?

Answer 6

• separate chambers

Question 7

Name the two septa

Answer 7

• interatrial
• interventricular

Question 8

What does the interatrial septum separate?

Answer 8

• separates atria

Question 9

What does the interventricular septum separate? (2)

Answer 9

• separates ventricles
• deep to interventricular sulcus (external)

Question 10

what is the fibrous skeleton of the heart? (2)

Answer 10

• CT fibres around the muscle fibres
• CT rings between atria and ventricles at the coronary sulcus

Question 11

What does the fibrous skeleton allow for?

Answer 11

• allows openings to remain open at all times (valves open and close)

Question 12

What does the fibrous skeleton provide?

Answer 12

• provides electrical installation to prevent simultaneous contraction of Chambers