Physiology to Remember Flashcards
1
Q
S1
A
- isovolumetric contraction
- closure of mitral and tricuspid valves
2
Q
S2
A
- isovolumetric relaxation
- closure of aortic and pulmonic valves
3
Q
P wave
A
- atrial depolarization
- the wave of depolarization that spreads from the SA node throughout the atria
4
Q
P-R interval
A
- period of time from the onset of the P wave to the beginning of the QRS complex
- represents the time between the onset of atrial depolarization and the onset of ventricular depolarization
5
Q
What does it mean if the P-R interval is greater than .20 seconds?
A
AV conduction block = first degree heart block
6
Q
QRS
A
- ventricular depolarization
7
Q
ST segment
A
- the isoelectric period following the QRS and ending at the beginning of the T wave
- this is the time at which both ventricles become completely depolarized
- plateau phase
- important with diagnosis of ischemia or hypoxia
8
Q
T waves
A
- ventricular repolarization
9
Q
U wave
A
- sometimes following the T wave
- the last remnants of ventricular repolarization
10
Q
Q-T interval
A
- represents the time for both ventricular depolarization and repolarization to occur
11
Q
Meissners corpuscle
A
Light touch
12
Q
Pacinian corpuscle
A
Vibration
13
Q
Ruffini endings
A
Constant touch/pressure
14
Q
Meckels disc
A
Pressure/texture
15
Q
How does insulin effect amino acids and protein synthesis?
A
It improvise AA uptake and protein synthesis
