Septum and myocardium Physiology Flashcards
(9 cards)
What is the internal wall of connective tissue that separates the right and left sides of the heart called?
Septum (plural septa)
The septum divides the heart into distinct functional areas.
What are the two parts of the septum?
- Interatrial septum
- Interventricular septum
The interatrial septum separates the atria, while the interventricular septum separates the ventricles.
What two functional pumps does the septa create in the heart?
- Right atrium and right ventricle
- Left atrium and left ventricle
These pumps facilitate the circulation of blood through the heart.
What type of pressure system is the right side of the heart associated with?
Low-pressure system (pulmonary circulation)
The right heart pumps blood to the lungs for oxygenation.
What type of pressure system is the left side of the heart associated with?
High-pressure pump (systemic circulation)
The left heart pumps oxygenated blood to the rest of the body.
What is the middle layer of the heart wall called?
Myocardium
The myocardium is primarily composed of thick cardiac muscle tissue.
What is the primary function of the myocardium?
Cardiac contraction and efficient ejection of blood
This layer is crucial for the heart’s pumping action.
What is the Epicardium?
Outermost surface layer
What is the Endocardium?
Innermost smooth layer
