Flashcards in Texas Heart Institute Deck (60):
Carries oxygen-rich blood away from heart
carries oxygen-poor blood back to heart
carries oxygen-poor blood to lungs
3 types of blood cells
thrombocytes, leukocytes, erythrocytes
What does blood do?
carries O2, CO2, nutrients, and wastes
What blood type is a universal donor?
Regulates blood flow between the right atrium and right ventricle
The outer layer of the pericardium is attached by ligaments to what?
diaphragm, spinal column
Name the chambers of the heart
right and left ventricle; right and left atrium
Name the 4 heart valves
tricuspid, mitral, pulmonary, aortic
Largest artery in the body
The body's pacemaker
SA (sinoatrial) node
Where does the heart's electrical signal begin
Transmits the electrical signal from the atria to ventricle
Controls blood flow from the right ventricle into the pulmonary arteries
Allows oxygen-rich blood from your lungs pass from the left atrium to the left ventricle
What valve opens to allow oxygen-rich blood to pass to the rest of the body
What causes the atria to contract?
an electrical signal transmitted by the SA node
What part of the 2-part pumping process is longer?
When do the ventricles relax?
after the pulmonary and aortic valves close
What causes the tricuspid and mitral valves to open?
decreased pressure in the ventricles
When the mitral valve closes, what valves open?
pulmonary and aortic
What 2 valves close at the same time?
mitral and triscuspid
Which ventricle pushes blood into the lungs to pick up oxygen?
How much does the heart weigh?
7 lbs, 15 oz
What is the purpose of the pericardium?
outside layer attaches heart to diaphragm & spinal column
The largest and strongest chamber in your heart?
What does the septum separate?
left and right atrium; left and right ventricle
Heart rate can change based on?
environment, exercise, health
What is the main supplier of blood to the body?
Which side of the heart supplies blood only to the lungs?
Which side of the heart is larger; more muscular?
Which node causes the ventricles to contract?
What does the aortic valve do?
prevents backflow of blood into the heart
Arteries branch into?
Arterioles branch into?
Is the superior vena cava a vein or artery?
What area of the body does the superior vena cava supply blood to?
What is the significance of the smooth epithelial tissue that lines the inside of blood vessels?
What do coronary arteries do?
circulate oxygenated blood through myocardium and veins and return deoxygenated blood to the right atrium through the coronary sinus.
The semilunar valve cusps are anchored by?
chordae tendinae and papillary muscles
Where does the exchange of gases, nutrients, and waste products occurs between blood and tissues?
The cardiovascular system consists of?
heart, blood, and blood vessels
What prevents friction between pericardium layers when the heart beats?
serous fluid located between them
Where is myocardium located?
heart chamber walls
Circulate oxygenated blood through myocardium and veins and return deoxygenated blood to the right atrium through the coronary sinus?
Where is the heart located?
in thoracic cavity between lungs and behind sternum
The average heart pumps how many gallons of blood per day?
Four blood types:
A, B, AB, O
The left ventricle pushes blood through what valve?
Gas exchange takes place in veins or capillaries?
Branches off into 2 main coronary arteries?
Why is the right side of the heart smaller?
It only supplies blood to the lungs
What causes the heart to contract?
When the electrical signal leaves the AV node, where does it go?
bundle of His
What causes a bundle branch block?
CAD, cardiomyopathy, valve disease
What are the symptoms of bundle branch block?
How is bundle branch block diagnosed?
ECG or EKG
How is bundle branch block treated?
insertion of a pacemaker