Histology

Question 1

Endocardium

Answer 1

Lines the entire inner surface of the heart

Structure: endothelium, basal lamina, thin layer of collagen, layer of dense CT

Question 2

Myocardium

Answer 2

Thick middle layer

Structure: bundles of contractile muscle fibres

Question 3

Epicardium

Answer 3

Outer lager o the heart, on the surface of the heart

Structure: single layer of flattened epithelium (mesothelium), fibroelastic CT, adipose tissue

Question 4

Fibrous pericardium

Answer 4

Sac of tough CT

Outer layer

Question 5

Serous pericardium

Answer 5

Inner layer
Parietal layer - lines inner surface of fibrous pericardium
Visceral layer - covers the surface of the heart

Question 6

Fibrous skeleton

Answer 6

Formed of thick bands of fibrous CT around the heart valves which supports the valves