Lecture 13 Flashcards
located in the mediastinum between the lungs; just superior to the diaphragm
location of the heart
________ is in the pericardial cavity
the heart
the heart is shaped like a ______
cone
the ______ of the heart is the top of the cone; top, broad area of the heart
base
the _______ of the heart is the bottom of the cone; bottom, pointy area of heart
apex
a serous membrane that surrounds and protects the heart
pericardium
dense irregular connective tissue
outer parietal layer of the pericardium
- adheres to heart
- epithelial cells that secrete pericardial fluid into pericardial cavity (space between layers of pericardium)
- pericardial fluid reduces friction between layers
inner visceral layer of the pericardium
what are the chambers of the heart?
right and left atria and right and left ventricles
- superior chambers of the heart
- interatrial septum
- opening of coronary sinus, superior vena cava, and inferior vena cava
right and left atria
- inferior chambers of heart
- chordae tendineae
- papillary muscle
- interventricular septum
right and left ventricles
what are the layers of the heart?
endocardium, myocardium, epicardium
inner most layer; thin layer of endothelium over thin layer of connective tissue
endocardium
continuous with endothelium of vessels that open into heart chambers; lines entire cardiovascular system
endocardium
middle layer of the heart; cardiac muscle tissue
myocardium
visceral layer of pericardium
epicardium
what are the valves on the right side of the heart?
tricuspid valve (atrioventricular valve) pulmonary valve (semilunar valve)
what are the valves on the left side of the heart?
bicuspid (mitral) valve (atrioventricular valve) aortic valve (semilunar valve)
what is another name for the bicuspid valve?
mitral valve
only the ___________ valves have chordae tendinae and papillary muscle associated with them
atrioventricular valves
what are the atrioventricular valves?
tricuspid valve and bicuspid (mitral) valve
what are the semilunar valves?
pulmonary valve and aortic valve
function is to prevent back flow
valves
what are the major vessels?
superior and inferior vena cava
pulmonary arteries and veins
coronary sinus
aorta
what are the different parts of the aorta?
ascending, arch of aorta, descending (thoracic and abdominal aorta)
located in ________: anterior interventricular branch and circumflex branch
left coronary artery
located in_________: posterior interventricular branch and marginal branch
right coronary artery
arteries branching off of ________: brachiocephalic trunk, left common carotid artery, and left subclavian artery
arch of aorta
located in________: R. common carotid artery and R. subclavian artery
brachiocephalic trunk
divides into left and right common iliac
descending aorta (abdominal aorta)
many vessels off the descending aorta which carries ________ blood to various organs
oxygenated
name the circulation starting from the arteries:
arteries –> arterioles –> capillaries –> venules –> veins
- sinoatrial (SA node)
- atrioventicular (AV node)
- bundle of his (AV bundle)
- right and left bundle branches
- perkinje fibers
conduction system of heart
which veins carry oxygenated blood?
pulmonary veins
if you occlude the right common iliac artery, blood flow will be diminished to what area of the body?
right leg
