Lecture - Special Circulations, Integrated Control of CVS Flashcards
Which factor increases MAP?
Increase maximum diastolic potential (Hyperpolarization)
Which cardiovascular physio relationship is correct?
CO = HR x SV
A 45 male drug addict took amphetamine. Which is least expected?
Increase cardiac filling time
Which decreases heart rate?
A. Brainbridge reflex (Tachycardia)
B. Increase threshold potential
C. Increase maximum diastolic potential
D. Decrease slope of depolarization
D. Decrease slope of depolarization
45 year old female was diagnosed septic shock by Dr. Jalipa. Started with inotropic support norepinephrine. Which is most likely the physiologic effect of the drug?
B2 airway relaxation
A 39 year old female patient was transfused with too much blood volume than what was required resulting to increase venous return and cardiac overload. Cranial nerves IX and X were stimulated. Which is not a parasympathetic effect?
Decrease myocardial contractility
A 29 year old male immediately stood up from supine position. Which is not a physiologic response to prevent postural hypotension?
Blood vessels in the lower extremities are more distensible
Which condition can increase the risk of postural hypotension?
A. Living in northpole B. Adrenaline producing tumor C. Lying supine while texting lover D. Vasoconstricted blood vessels E. On going hemorrhage
E. On going hemorrhage
During fight or flight response, which is expected physiologic response?
Decreased renal blood flow
A 33 year old male gym goer. Which is an expected observation?
A. Precapillary sphincter contracts B. C. Heart rate increases 1.5 x (3x) D. E. Vasodilation of cutaneous blood vessels which will cool down the temperature
E. Vasodilation of cutaneous blood vessels which will cool down the temperature
Which is true regarding the physiologic response to hemorrhage?
Sudden drop of MAP
Which mechanism results to conservation of salt and water during hemorrhage?
Increase Aldosterone release
During hemorrhage, what ion directly stimulates chemoreceptors?
H+
A 16 year old male had an LBM resulting to decreased intravascular volume. Not vasoconstriction?
Decreased cardiac output
True in transcapillary refill.
Replacement of fluid by intracellular fluid.
Which of the following main factor that contributes to orthostasis?
Gravity
Flight and fight response is controlled mainly by?
Hypothalamus
During stimulation of the sympathetic response what happens to the major vessels of the coronary circulation?
Vasodilate
Angiotensin 1 will go to which organ to be cleaved to become a potent vasoconstrictor?
Lungs
The kidney releases what type of hormone to cleave angiotensinogen to become angiotensin 1?
Renin
Aldosterone is released by the adrenal gland and functions to?
Conserve water
Central chemoreceptor acts when there is a decrease in which of the following?
pH level
Among the mechanisms of controlling regional blood flow, the following of the statements is correct?
None of the choices
Shear stress exerted by the movement of blood into the lumen is:
True
