Cardiovascular And Circulatory

Question 1

Endocardium

Answer 1

Smooth and delicate
Inner lining of the atria and ventricles

Question 2

Myocardium

Answer 2

• Muscular wall
• Makes up the bulk of the heart
• Left ventricle is especially thick to force blood through the arteries leading to every part of the body

Question 3

Pericardium

Answer 3

• Thin but sturdy outer membrane
• Has two layers of its own:
1. Visceral pericardium adheres to the myocardium
2. Parietal pericardium contains the whole heart like a sac.

Question 4

Pericardial cavity

Answer 4

Between the visceral and the parietal layers is the pericardial cavity, which is a fluid-filled space.

Question 5

septa (singular, septum).

Answer 5

The four chambers of the heart are divided by walls called

Question 6

interatrial septum

Answer 6

partitions the two atria,

Question 7

interventricular septum

Answer 7

separates the ventricles.

Question 8

Atrioventricular valve

Answer 8

Connects atrium and ventricle