Irene Gold Part 1 Physiology Questions and Answers

Irene Gold Part 1
Physiology Questions and
Answers


Blood from Upper Extremity goes into the heart from the _______.


Ans- Superior Vena Cava




Blood from Lower Extremity goes into the heart from the ______.


Ans- Inferior Vena Cava




Where does the Azygous vein drain into the heart from?


Ans- Lumbars into SVC




____ % of blood passively flows into the right ventricle.

,Ans- 80




____ % of blood needs atrial contraction.


Ans- 20




P-wave starts at ___ node in Crista Terminals of right atrium.


Ans- Sino-Atrial (SA) node


aka pacemaker




Tricuspid closes after __ wave.


Ans- P




Impulse that is released from the P-wave travels to ____ node.


Ans- AV




What is AV-Nodal Delay?


Ans- SA node impulse to AV node and delayed (P-R interval)

,What is isovolumetric contraction?


Ans- Tricuspid closes --> ventricle contracts




QRS complex occurs due to ______.


Ans- Ventricular depolarization


ventricle contracts




pulmonary artery is the only artery that


Ans- carries DEoxygenated blood




Mid-systole causes enough pressure to blow open ____ ____ valves.


Ans- pulmonic semilunar




Blood exits the heart via 2 pulmonary ____ to the lungs.


Ans- arteries

, What are the two arteries that carry deoxygenated blood?


Ans- 1. Pulmonary artery


2. Umbilical artery (in fetus)




Blood is oxygenated via ____ _____.


Ans- Bohr effect




How many O2 molecules are in hemoglobin?


Ans- 4




In the lungs, ____ % hemoglobin is saturated with O2.


Ans- 97




In the lungs the Bohr effect causes ____ CO2, ____ H+, ____ DPG, and ____

temp. (increase or decrease)


Ans- decreased for all 4