What is the function of the coronary circulation? |
provide blood supply to the heat |
What is the ligament arteriosum? |
A remnant of the ductus arteria |
Which chamber of the heart exits into the pulmonary trunk? |
Right ventricle |
Identify the ear like flaps that are attached to the top chambers of the heart. |
Auricle |
The first branch off the arch of the aorta is the brachiocephalic artery. |
true |
the base of the heart is where? |
top of the heart |
Name the ridged bundles of muscle found projecting inside the right atrium. |
pectinate muscles |
identify the right atrioventricular valve |
tricuspid valve |
identify the valve located at the exit of the right ventricle. |
pulmonary semilunar valve |
the moderator band is found on both the right and left side of the heart |
false- just the right side |
oxygenated blood flows through the right side of the heart. |
false |
what is the most muscular chamber? |
left ventricle |
What is the inner lining of the heart? |
endocardium |
what valve is found between the left atrium and left ventricle? |
Bicuspid (mitral) valve |
what heart chamber pushes blood through the aortic semilunar valve? |
Left ventricle |
Name the needle like ridges lining the ventricles |
trabeculae carneae |
what fibrous structure functions as to anchor the atrioventricular valves in a closed position? |
chordae tendineae |
Blood on the right never mixes with the blood on the left, once the heart is fully developed. |
true |
the portion of the pericardium that covers there heart wall is called? |
visceral layer (epicardium) |
in the coronary circulation, oxygen-rich blood is provided to the heart muscle by the? |
right and left coronary arteries |
the aorta leaves the heart from what ventricle? |
left |
blood has been discharged into the pulmonary trunk; where did it exit from? |
right ventricle |
which vessels carry oxygenated-rich blood |
aorta and pulmonary veins |
this structure is a remnant of a fetal vessel that connected the pulmonary trunk to the aorta. |
ligamentum arteriosum |
what are found in the ventricles, and attach the flaps of the AV valves to papillary muscle? |
Chordae tendineae |
the heart is located in a subdivision of the thorax called? |
mediastinum |
pericardial sac that encloses the heart is a two-layered structure. the outer layer is called? |
fibrous pericardium |
major pumping chambers of the heart are? |
both ventricles |
heart valves do what? |
enforce a one-way blood flow through the heart, operate passively, and separate atria from ventricles, and ventricles from the large arteries that leave them |
what side of the heart receives blood from the body and pumps it to the lungs? |
right |
the pulmonary trunk and arteries are color-coded, ( ) on models and in pictures, because they carry ( ) blood. |
blue, oxygen-poor |
blood flow through the heart goes? |
left atrium to left ventricle to the body |
cardiac muscle tissue is? |
striated, like skeletal muscle tissue |
blood arriving in the right atrium has just come from the? |
venae cavae and coronary sinus |
intercalated discs in cardiac muscle tissue does what? |
Mark the junction between two cardiac cells |