Heart Basics
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle
True or False
Arteries bring blood to the heart from the body
False!!
Arteries bring blood from the heart to the body
*Think Artery as Away
What are the three layers of cardiac tissue (make up tissue wall) from most superficial to most deep?
Epicardium, myocardium, endocardium
What is the function of the pulmonary circuit?
To oxygenate blood
What is the name of the valve that connects the atrium to the ventricle?
Atrioventricular valve
*also known as the tricuspid valve for the right atrium/ventricle
*also known as the mitral valve for the left atrium/ventricle
Fill in the blank
The heart is located in the ... of the thoracic cavity
Mediastinum
What is the big artery that brings oxygenated blood out of the heart?
Aorta
What is the function of serous fluid in paricardial cavity?
To reduce friction during muscular contraction
What chamber of the heart does deoxygenated blood drive at? What chamber does deoxygenated blood leave to become oxygenated?
Right atrium; right ventricle
Where are the semilunar valves located? What is the function of the semilunar valves?
What part of the heart do blood vessels join at?
The base
The venae cavae are a set of veins that bring what kind of blood to the heart?
The endocardium layer is made up epithelial cells. It lines what part of the heart?
The chambers
The pulmonary trunk and pulmonary arteries bring what kind of blood to this organ?
(Two part question)
Deoxygenated blood; to the lungs
What are the chordae tendineae?
Cords made of connective tissue that connect the valves to papillary muscles on the floor of the ventricles
What half of the heart has greater muscle mass?
The left
What is the circuit called the that brings oxygenated blood to the body and deoxygenated blood to the heart?
The systemic circuit
The only layer of the heart that is made up of muscular tissue is ...
The myocardium
*remember "myo" means muscle
The left atrium receives oxygenated blood from the vessel?
Pulmonary veins
What is the marker to determine the boundaries between the right and left ventricles?
Interventricular sulcus
Uninucleated, intercalated dics, branching of cardiocytes
Where does gas exchange occur?
In the capillary beds
The parietal pericardium is a protective layer that connects to the heart. What could happen if this layer is damaged?
Serous fluid can build up causing difficulty during contraction resulting in low blood output and low O2 levels throughout the body; may result in cardiac arrest
List the steps of blood flow through the pulmonary circuit starting at the right atrium
1.) blood arrives to the right atrium (deoxygenated)
2.) travels to right ventricle
3.) pumped through pulmonary trunk and arteries
4.) arrives at lungs
5.) Blood now oxygenated
6.) Oxygenated blood travels through the pulmonary veins to left atrium
7.) Blood travels to left ventricle
8.) Blood pumped out of aorta to the body
What is the name for the wall that separates the atria of the heart?
Interatrial septum