Structure
The right ventricle sends what type of blood where
The left ventricle sends what type of blood where
oxygen-poor blood into the pulmonary circuit
oxygen-rich blood into the systemic circuit
The hearts function is to
circulate blood through the circulatory system via the blood vessels
The two atrioventricular valves are:
bicuspid and tricuspid
a) Capillaries permit the ---- of with ---
B) Veins carry --- ---- the heart
permit exchange of materials with tissues
carry blood toward the heart
where is the heart found in the body
located between the lungs on the left side, which is why the left lung is smaller than the right
arteries carry and from where
carry blood away from the heart
pumping of blood throughout the body allows for what
oxygen and various nutrients that are carried in the blood to be brought to the rest of the body
The two Semilunar valves are:
pulmonary semi lunar and aortic semilunar
Diastole is the
Relaxation of the heart muscle
The heart is located
Lies between the lungs directly behind the sternum
The right atrium and right ventricle are separated by
by the tricuspid valve.
The heart circulates blood through two pathways which are:
the pulmonary circuit and the systemic circuit.
The atrioventricular (AV) valves separate:
each atrium and ventricle
Septum divides
Divides the right and left chambers of the heart
Blood must travel through the lungs to go from
the right side of the heart to the left side
The left atrium and left ventricle are separated by
by the mitral valve
In the systemic circuit, oxygenated blood leaves the body via the what and from there enters where and what is supplied
left ventricle to the aorta, and from there enters the arteries and capillaries where it supplies the body's tissues with oxygen
The semilunar valves controls what
blood flow to the aorta and the pulmonary artery
The 3 layers of the heart are what?
pericardium, myocardium and endocardium
Intrinsic Control of Heartbeat
Made possible by nodal tissue that has both muscular and nervous characteristics
Pericardial Sac
Encloses the
Has a tough, superficial fibrous layer of
Also has a ---- ----- serous layer
Encloses the heart
Has a tough, superficial fibrous layer of dense irregular connective tissue
Also has a thin, deep serous layer
Deoxygenated blood returns via and then re-enters where
veins to the venae cavae, re-entering the heart's right atrium
a) "Lub" sound means what's closing
b) "Dup" sound means what's closing
a) atrioventricular valves closing
b) semilunar valves closing
Describe the pulmonary and systemic circuit
is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart.
Each time the heart beats the 2 --- --- simultaneously. Then the 2 --- ---simultaneously. All the --- then ---
The two atria contract simultaneously
Then the two ventricles contract simultaneously
All the chambers then relax