Exam 2 Flashcards
Extrinsic Blood Clot Pathway
Release of Tissue Plasminogen Activator—> Prothrombin Activator Complex
Phase 0
- Caused by rapid influx of Na+ (depolarization)
- Inc. in Na+ permeability
Phase 1
- Dec. in Na+ permeability
- Inc. in K+ permeability
Phase 2
- Inc. in Ca++ permeability
- Ca++ influx
- Dec. in K+ permeability
Phase 3
- relative inc. in K+ permeability
- efflux of K+
- Repolarization
Gap Junctions
Allow for electrical activity to pass from one cell to the next
P Wave
Atrial Depolarization
QRS Complex
Ventricular Depolarization
T wave
Ventricular Repolarization
1st Degree Block
Increase in PR interval
Slowing in trio to ventrical
2nd Degree Block
Some P waves are not followed by a QRS complex
3rd Degree Block
No relationship between P waves and QRS complex
____ is released by the _____ at high altitudes and stimulates the production of RBCs
Erythropoietin, Kidneys
Cardiac Output
Heart Rate x Stroke Volume
Stroke Volume
mL pumped per beat
Class of drugs that best mimics the effects of the vagus on the heart
Muscarinic Receptor Agonist
What is contained in the plasma but not serum
Fibrinogen
Physiological dead space includes:
alveolar units with abnormally high V/Q ratios
During anemia
the oxygen carrying capacity of the blood would be decreased
If sympathetic vasomotor tone decreases
TPR and mean arterial blood pressure decrease
After expiration and before the next inspiration begins
alveolar pressure is equal to atmospheric pressure
A poison has led to the paralysis of both inspiratory and expiratory muscles. Which of the following class of drugs could include this poison?
Nicotinic Receptor Antagonist
