Histology Of The Heart Flashcards
Layers of the heart
Endo
Myo
Epic
Structure of endocardium
Endothelium , basal lamina thin , layer of collagen fiber and
Layers of denser connective tissues
papillary muscles of the heart are pillar-like muscles seen within the cavity of the ventricles, attached to their walls.
What’s subendocardium
Loss connective tissues contain small blood vessels and branches of impulse conduct such as bundles of his
Where do contractile muscles fibers are present
In myocardium
How cardiac myocytes are attached
By dics which allow the spread of electrical signals
How epicardium layer is formed
Using visceral layer of pericardium and are lined by mesothelium
What is pericardium
A fibrous sac that encloses the heart and great vessels. It keeps the heart in a stable location in the mediastinum, facilitates its movements, and separates it from the lungs and other mediastinal structures. It also supports physiological cardiac function.[
How is fibrous pericardium is made
By Tough firbocollagen connective tissues
Two type of pericardium
Fibrous
Serous
What are the layers that make up the serous pericardium?
- Made up of a layer of mesothelium, backed by a basal lamina and connective tissue
- Parietal serous pericardium: lines the inner surface of the fibrous pericardium
- Pericardial cavity: separates the two layers of serous pericardium, contains pericardial fluid which provides lubrication for heart movement
- Visceral serous pericardium: covers the surface of the heart (also known as the epicardium)
How the atria is separated electrically from ventricles
By fibrous which made of thick connective tissues
What do the values of the heart composed of
Endocardium and connective tissues
4 valets of the heart are divide into two categories which are ?
Atrioventricular valve
Semilunar valves
valves have blood vessels Tru/ False
False
Atrioventricules are opened during systole True /False
False
Systole Is contraction of ventricles
What is the difference between tricuspid valve and mitral valve
Locate in the right
Has three cusps arterial septal and posterior
Locate in the left also know as bicuspid
Only have two cusps anterior and posterior
Semilunar valves are closed during diastolic True / False
True diastolic produce second heart sound
Whist the difference between aortic valve and pulmonary valve
Located in the left
Consist of three cusps right left posterior
Located in the right
Consist of three cusps left right and ANTERIOR
Locations of cardiac valves
Aortic : second right intercostal space, sternal angle
Pulmonary : second left intercostal space , sternal angel
Tricuspid : fourth left intercostal space , sternal angel
Mitral : fifth left intercostal space , midclavicular line (this where APEX beat examined).
The tricuspid valve is attached to
moderator ban in the right ventricle
thoracic duct drain into
right venous angle
