Cardic Flashcards
What allows for quick communication and contraction ?
Gap Junctions
What are Fascia Adheres
desmosome- like connections tension is disturbed between cells
What carries blood away from the heart?
arteries
What carries blood toward the heart
viens
Describe pulmonary circulation
*Right ventricle à pulmonary trunk pulmonary arteries à lungs à pulmonary veins à left atrium. *Allows blood to pick up oxygen
b Systemic Circuit
*Left ventricle à Aorta à Cells of body à Veins à Right atrium. *Brings oxygen to cells
Put the chambers of the heart in the right order starting with the right side and top of the heart
Right atrium
right ventrical
left atrium
left ventrical
Pericardium
pericardium is a triple-layered sac that encloses the heart.
Cardiac Tamponade
Occurs when there is excess pericardial fluid
Layers of the pericardium
- Epicardium
outer fibrous layer visceral pericardium - Myocardium
Cardiac muscle tissue - Endocardium
Simple squamous
why is the left ventricular myocardium thicker then the right?
Strong to pump blood to the whole body
The papillary muscle connects what too what?
atrioventricular valves via chordae tendineae
What is the Chordae
dense ir tissue that connects the atrioventricular and papliary muscles
Where is the tricuspid valve located
This is located on the right side of the heart
Where is the Bicuspid valve located
on the left side
What are the left and right Cuspid valves formed by and reinforced by?
There reinforced with dense CT and and formed by endocardium
Without the Atrioventricular valves how would blood flow ?
Blood would flow freely the valves are designed to keep blood flowing in one direction
Lub means what is closing when you hear it ?
Av valves
dub means what when it comes to sound of heart ?
semilunar valves are closing
why is there a whoosh noise in a Heart Murmur
blood flows backwards into the chamber
What is Mitral valve prolapse ?
Most common, weakness in collagen of valve or chordae tendineae
What is Stenosis?
Narrowed opening between valves May be caused by calcium deposits or illness
What conduct electrical impulses in the heart?
Nodes
what does it mean when cardiac muscle don’t depend on extrisince stimulation
autorhymicity
