The wide region of the heart indicated by the color blue is the _____
The narrow region of the heart indicated by the color red is the _____
base
- where the great vessels enter
apex
- narrow tip
The structure surrounding the heart is the _____
pericardium
- protective tissue surrounding the heart
The shiny serous layer indicated by the metal probe is the _____
parietal pericardium
- part of the serous layer, in contact with the fibrous pericardium
The shiny serous layer on the surface of the heart is called the _____
epicardium
- the outermost layer of the heart wall, made up of squamous epithelium, connective tissue and fat
The green chamber is the _____
The orange chamber is the _____
right ventricle
- pumps blood to the pulmonary circuit through the pulmonary truck
left ventricle
- pumps blood to the systemic circuit through the aorta
The red structure is the _____
right auricle
- earlike projections that exten anteriorly from each atrium
The purple structure is the _____
left auricle
- earlike projections that extend anteriorly from each atrium
The blue vessel is the _____
The orange vessel is the _____
superior vena cava
- returns blood from the head, upper limbs and thorax to the right atrium
inferior vena cava
- returns blood from the abdomen, pelvis and lower limbs to the right atrium
Name the green chamber.
right atrium
- receives deoxygenated blood from the superior and inferior vena cavae
Name the orange vessel that drains into this chamber.
coronary sinus
- (and cardiac veins) return blood from the heart tissues to the right atrium
Name the red wall between the chambers.
interatrial septum
- functions to keep oxygenated and deoxygenated blood separate
Name the green valve.
tricuspid valve
- located between the right atrium and right ventricle, prevent the flowing back in the atria when the hear is contracted
The blue structures are the ____
which are attached to the orange muscle called_____
chordae tendinae
- fibrous attachments to the ventricular side of the AV valves which anchor the valves to the papillary muscle
papillary muscle
- chordae tendinae attachment point to prevent AV valves from inverting
The purple chamber is the _____
right ventricle
- pumps blood to the pulmonary circuit through the pulmonary trunk
Name the orange structure stretching across this chamber.
moderator band
- muscular band of heart tissue spanning the right ventricle, short cut for electrical conduction across the ventricle
Name the shiny, inner layer indicated by the metal probe.
endocardium
- smooth inner layer of the heart wall; simple squamous epithelium reduces friction as blood flows through the heart
Name the red tissue layer.
myocardium
- middle layer composed of cardiac muscle which provides the force that propels blood through the heart
Name the orange valve.
pulmonary semilunar valve
- between the right ventricle and pulmonary trunk
The orange vessel is the _____
pulmonary trunk
- drains the right ventricle; divides to form left and right pulmonary arteries which deliver deoxygenated blood to the lungs
The green and blue vessels both branch off the orange vessel.
The green vessel is the _____
The blue vessel is the _____
right pulmonary artery
- deliver deoxygenated blood to the lungs
left pulmonary artery
- deliver deoxygenated blood to the lungs
Name the orange chamber.
left atrium
- receives oxygenated blood from the pulmonary veins
Name the green valve.
mitral (bicuspid) valve
- located between the left atrium and left ventricle
Name the blue chamber.
left ventricle
- chamber pumps blood to the systemic circuit through the aorta
The yellow wall between the chambers is the _____
interventricular septum
- separates the ventricles from each other
