Heart Flashcards
Right side of the heart which carries blood to lungs for O2 CO2 exchange and back to heart
Pulmonary Circuit
Left side of heart which supplies oxygenated blood to all tissues of the body and returns it to the heart
Systemic circuit
Blood vessels are attached to which part of the heart?
Base
Heart is located in the
Mediastinum, between the heart
Double walled sac that encloses the heart
Pericardium
The heart wall is anchored to diaphragm ________ and sternum ___________.
Inferiorly
anteriorly
What are the 3 layers of the heart wall superficial to deep?
Epicardium
Myocardium
Endocardium
What are the 3 layers of the heart wall deep to superficial?
Endocardium
Myocardium
Epicardium
The layer of the heart wall that is cardiac muscle is
Myocardium
When sympathetic division of the ANS is activated and HR rises, which layer of the heart will the Epi go to? AKA any effect on the heart will go to….
Myocardium
The endocardium portion of the heart wall has ______ _______ epithelia
Simple Squamous
The right a left atria of the four chambers are responsible for
Receiving blood returning to heart through afferent vessels (veins)
Auricles
The right and left ventricles of the four chambers are responsible for
Pumping blood into efferent vessels (arteries)
Arteries are _____ vessels
efferent
Veins are ______ vessels
afferent
What is the wall that separates atria
Interatrial septum
What is the muscular wall that separates ventricles
Interventricular septum
Internal ridges in both ventricles are called
Trabeculae carneae
The internal ridges of myocardium in atria and both auricles are called
Pectinate muscles
The flaps of the heart that allow for expansion to allow more blood are called
Auricles
What is a sulcus
Groove that contains blood vessels
On the external anterior portion of the heart, the Coronary (Atrioventricular) sulcus separates…
atria and ventricles
On the external anterior portion of the heart the Ant. Interventricular sulcus overlies
the interventricular septum that divides the right ventricle from the left
These valves control blood flow between atria and ventricles
Atrioventricular (AV) valves