1
The heart beats how many times per day without exercise?
100,000
What layer of the heart contains the muscle that is used to pump blood from the ventricles
myocardium
The _________has more muscle tissue than the _______ becuase it needs to pump the blood far distances in the body.
Ventricle, atria
What is the purpose of the fossa ovalis
to allow blood to exchange through the atrias while in a fetal heart.
coronary sulcus holds the…
coronary sinus
75,000miles
What layer of the heart is made of dense irregular connective tissue
fibrous pericardium
When the blood enters the right atrium where is its next stop?
through the tricuspid valve into the right ventricle
All deoxygenated blood returning from the body gets dumped into the ___________ by what 3 veins:
right atrium: S. Vena Cava, I. Vena Cava, coronary sinus
Chordae tendoneae are attatched to the _________ and allow for what function.
Papillary muscles that allow the right AV valve to keep the valve closed
The apex of the heart points tward the…
left hip
Where is serous fluid contained around the heart
pericardial cavity in between the visceral layer of serous pericardium and the parietal layer of serous pericardium
What is the name for the folds on the wall of the ventricle cavity
trabeculae carneae
The pulmonary valve connects the __________ with the ____________
right ventricle to the pulmonary trunk
The blood comes back into the heart from the lungs through what tubes to enter the …
pulmonary veins to enter the left atria
2-6
What is the type of tissue is the endocardium made out of
simple squamous epithelial tissue
what is the name of the passage in the fetal heart that connect the aorta and pulmonary trunk
ligamentum arteriosum
The pulmonary artery’s are _______________ while the pulmonary veins are ______________
deoxygenated, oxygenated
Artery ALWAYS flow…
away from the heart
What is the purpose of the auricles
to make the atria just a little bit bigger
The left atria can only truly be seen from what view of the heart
posterior view
bicuspid, mitral, and left AV valve
The aortic valve connect what two structures and carry what kind of blood
left ventricle, and aorta, oxygenated
Left pulmonary veins are returning blood from the …
lungs