chap 12 Flashcards
(21 cards)
is how many beats per minute
Heart rate
Is the volume of blood per heartbeat
Stroke volume
volume of blood pumped per minute
Cardiac output
contractions
Time in between contractions
systole
diastole
The role of valves
Prevent backflow of the blood
The role of intercalated discs
electrical signals transmitted through
Holding cardiac muscles together
what valves are open during systole
aortic and pulmonary valves open
what valves are open during diastole
bicuspid and tricuspid
The importance of the SA node
sinoatrial node located in the right atrium
Produce electrical impulse
p wave
Atrial depolarization
QRS complex
waveform on ECG that represents depolarization of the ventricles of the heart
Ventricle depolarization and atrial repolarization
T wave
ventricle repolarization
PR interval
Atrial contraction
QT segment
ventricle systole
TQ interval
Ventricular diastole
Blood flow and cardiac output at rest and how the blood distribution is shifted during exercise
CO is 5L/ min at rest and 25 L/min during exercise
HR x SV = CO
Is released from kidney and axon bone marrow to stimulate erythrocyte production
erythropoietin
is the decrease in ability to carry oxygen (low RBC, lower HB in RBC, combination of both)
anemia
What are different types of anemia?
hemorrhage, destruction of RBC, iron deficiency, vitamin B 12/folic acid deficiency, bone marrow failure
RG protein couple protectors that work through second messengers making them metabotropic
produce slow response
muscarinic receptors
fraction of end- diastolic volume ejected during a heartbeat
= stroke volume/ end-diastolic volume
Ejection fraction
