The Heart Flashcards
Stationary blood will…
exhaust oxygen and nutrient supply quickly.
Stationary blood becomes saturated with ….
waste
The heart beats ___ liters/min at resting and ___ liters/min when exercising.
5, 30
The heart pumps blood through a ___
closed system.
Which side of the heart carries deoxygenated blood?
The right side
Which side of the heart carries oxygenated blood?
The left side
Where is the heart located?
In the mediastinum, within the pericardial cavity and laying on the diaphragm
Which side is more anterior?
The right chambers
Base of Heart
on the superior border, between atria and great vessels, deep to 3rd rib
Apex of heart
point of heart, left ventricle, deep to 5th intercostal space
Layers of heart wall from interior to exterior
endocardium, myocardium, epicardium, pericardial cavity, and parietal pericardium
Which heart wall layer does the fibrous skeleton reside in?
myocardium
Which heart wall is in contact with blood?
Endocardium
cardiocytes have ____
intrinsic conduction
how adjacent cells in cardiac muscle join by?
intercalated discs
Connective tissue upon which heart is built is…
collagen, reticular, and elastic fibers
Function of the cardiac skeleton
Stabilizes and supports the muscle cells and valves, prevents overexpansion of the heart, provides elasticity for the heart, and physically isolates atria from ventricles
Atria chambers are ___
thin walled
left atrium receives ___ blood from…
oxygenated, lungs
right atrium receives _____ from ___
deoxygenated, body
Where are the pacemaker cells located ?
In the right atrial wall
The right ventricle pumps ___ to ___
deoxygenated blood, lungs
left ventricle pumps _____ to ___
oxygenated, body
which ventricle has the thickest wall?
the left
What do the superior vena cava and inferior vena cava do?
carry deoxygenated blood from body tissues to right atrium
the pulmonary artery…
carries deoxygenated blood from the right ventricle to lungs
what do the pulmonary veins do?
carries oxygenated blood from lungs to left atrium
myocardial infarction (heart attack) is caused by
insufficient blood supply and tissue degeneration
1.
arch of aorta
2.
pulmonary artery
3.
left atrium
4.
coronary sinus
5.
great cardiac vein
6.
left ventricle
7.
superior vena cava
8.
pulmonary veins
9.
right atrium
10.
inferior vena cava
11.
posterior interventricular sulcus
12.
right ventricle
1..
superior vena cava
2.
pulmonary veins
3.
left atrium
4.
right ventricle
7.
left coronary artery
8.
ligamentum arterosis
9.
arch of aorta
10.
left pulmonary artery
11.
left pulmonary vein
12.
auricle of left atrium
13.
left ventricle
14.
apex
15.
inferior vena cava
1.
right pulmonary arteries
2.
brachiocephalic
3.
common carotid
4.
left subclavian artery
5.
aorta
6.
pulmonary trunk
7.
ligamentum arteriosus
8.
left pulmonary arteries
9.
left pulmonary veins
10.
bicuspid valve
11.
left ventricle
12.
papillary muscle
13.
ventricular septum
14.
descending aorta
15.
papillary muscle
16.
inferior vena cava
17.
chordae tendinae
18.
tricuspid valve
19.
opening for coronary sinus
20.
right atrium
21.
fossa ovales
22.
right pulmonary veins
