Cardio - Heart Wall

Question 1

also known as visceral pericardium

• Outermost layer
• contains blood vessels that nourish the heart

Answer 1

Epicardium

Question 2

• layer of cardiac muscle
• provides force for contaction

Answer 2

Myocardium

Question 3

• inner layer of simple squamous epithelium
• also lines inside of blood vessels attached to heart

Answer 3

Endocardium

Question 4

• It is the layer that actually contracts
• reinforced internally by a network of dense fibrous connective tissue called “skeleton of the heart”

Answer 4

Myocardium

Question 5

Under Myocardium

• it is the cells that are linked together by intercalated discs, containing both desmosomes and gap junctions (allow ions to flow cell to cell, carrying wave of excitement across the heart)

Answer 5

Myocardial cells

Question 6

• thin, glistening sheet of endothelium that lines the heart chambers
• continuous with the linings of the blood vessels leaving and entering the heart

Answer 6

Endocardium