Prefinals examination (2019) by Keim Flashcards
Which of the following is false?
Heart receives 10% of the resting CO.
True or False:
Dissociation curve has sigmoidal shape because of the binding of 4 O2 molecules.
True
CO2 in blood not quanititively important.
Carbonate
Resistance in venous:
Veins
In hemorrhage, sympathetic constriction of blood vessels is most pronounced in the ff. except:
Kidneys
True in normal pulmonary circulation except:
A. High compliance
B. Low pressure
C. Low resistance
D. NOTA
D. NOTA
First korotkoff sound is:
Systolic pressure
Bohr effects shifts the Hb-O2 dissociation curve to the right.
Respiratory acidosis
Brain lacks lymphatic vessels.
True
Transport of oxygen and CO2 in the blood.
100-fold higher affinity for 2,3-DPG deoxygenated blood.
Dissociation curve of fetal Hb binding with 2,3-DPG compared to adult Hb
Shift to the left
Binding of O2 to Fe2+, heme changes from dome shaped to
Planar, downward
Ventilation and perfusion in the lungs
Ventilated but not perfused, physiologic dead space
Most rostral part of VRG
Botzinger complex
Has pneumotaxic center that prevents apneusis
Rostral Pons
Contains both inspiratory and expiratory RRNs
VRG
Maximal, brief inspiratory efforts separated by long periods of expiration
gasping
Breathe properly when awake, respiratory failure when asleep
Ondine’s curse
Coordination with complex non ventilatory behaviors
Vomiting, yawning, chewing, swallowing, sucking, defecating, grunting
Does not cause hypertension
Hypoaldosteronism
False about hypertension:
primary hypertension has one definite identifiable cause
True or False: Extracellular increased in hydrogen causes intracellular hypokalemia
True
In the absence of other buffers, doubling the bicarbonate will result to :
rise in pH by 0.3
Fraction of inspired oxygen:
21%
Which can decrease cardiac output?
increased end systolic volume
AV delay
0.12sec
Acid extruders
NBCN1 and NHE1
Acid loader:
AE2
