Chapter 5 Heart: Anatomy Flashcards
What are the structures of the Cardiovascular system?
Heart, arteries, capillaries, and veins
What is the function of the CV system?
Distributes oxygen and other nutrients (glucose and amino acids); collects waste products from the body
Where do carbon diozide and other waste products transported?
to the lungs, liver, and kidneys to get rid of
What are the two circulations?
Pulmonary and systemic
What is the pulmonary circulation?
Heart and the lungs
Transports deoxygenated blood to the lungs to get oxygen and back to the heart
Systemic Circulation
Carries oxygenated blood away from the heart to the other parts of the body
What is the heart?
muscular pump- cardiac muscle fibers
Where is the heart located?
In the mediastinum
What is the tip of the lower edge of the heart?
apex
What are the three layers of the heart deep to superficial?
Endocardium
Myocardium
Epicardium- Visceral pericardium & parietal pericardium
What is the endocardium?
it is a smooth and thin inner layer that lines the heart chambers and it reduces friction as blood goes through the chamber
What is the myocardium?
It is a thick, muscular layer and the contraction of this layer creates pressure to pump blood through vessles
What is the epicardium?
It is the outer layer of the heart and it is a pericardium which is a double layered pleural sac that contains the visceral pericardium and parietal pericardium and it reduces friction as the heart beats
What is the visceral and parietal pericardium?
Visceral Pericardium: inner layer of the sac
Parietal Pericardium: outer layer of the sac
How many chambers are there of the heart? What are they?
4; Right atria, left atria, left ventricle, right ventricle
How are the atrium and ventricles divided?
interatrial septum and interventicular septum -walls