Cardio 235-242 Flashcards
5 accessory muscles of inspiration
SCM scalenes Pec major Pec minor Serrated anterior
Results of valsalva maneuver (intrathoracic pressure, venous pressure, venous return)
Increased intrathoracic pressure
Increased central venous pressure
Decreased venous return
Cardiac output
Amount of blood pumped fro, the LV or RV per minute
What is inotropic effect
Sympathetic response causing chambers to have greater force of contraction
The vein that returns venous blood fro, the head, neck, and arms to right atrium
Superior vena cava
The veins that carry oxygenated blood fro, the right and left lungs to the left atrium
Pulmonary veins
What is the normal pacemaker of the heart
SA node
Forced expiration volume (FEV)
the maximal volume of air exhaled in a specified period of time
In general, what do the right chambers (RA, RV) do
Collect blood from the body and pump it to the lungs
A double-walled connective tissue sac that surrounds the outside of the heart and great vessels
Pericardium
Contraction of the external and internal intercostals cause
Ribs to elevate
Contraction of the diaphragm allows for…
Chest to expand longitudinally
Lower ribs elevate to allow for inspiration
Ultimately what happens to heart rate following valsalva
Decreases heart rate
What is preload
Tension in the ventricular wall at the end of diastole
What is visceral pleura
Membranous serous sac that covers each lung
A atomic dead space volume (VD)
the volume of air that occupies the non-respiratory conducting airways
Expiration reserve volume (ERV)
maximal volume of air that can be exhaled after normal (tidal) exhalation
What is the left AV valve
Mitral
What is the right AV valve
Tricuspid
What covers each lung
Visceral Pleura