CARDIAC MECHANICS(ANATOMY)

Question 1

TYPES OF CIRCULATION

Answer 1

GENERAL:PULMONARY,SYSTEMIC,FETAL,HEPATIC
SPECIAL:CORONARY,CEREBRAL,RENAL

Question 2

SUBSTANCES

DIFFUSION

Answer 2

SUBSTANCES DISSOLVED ON THE CONTINOUS MEDIUM ARE UNIFORMLY DISPERSED,BROWNIAN

DIFFUSION-OCCURS SLOWLY OVER LARGE DISTANCE BUT RAPIDLY OVER SHORT DISTANCE ALSO DEPEND ON CONCENTRATION

Question 3

ADULT HUMAN HEART ON AVERAGE PUMPS

Answer 3

5-35 LITRS OF BLOOD PER MINUTE

4 BILLION BEATS IN A LIFETIME

Question 4

VENTRICULA WALLS ARE MADE OF

Answer 4

SINOSPIRAL (FROM TRICUSPID)

BULBOSPIRAL(FROM BICUSPID)

Question 5

3 MECHANISMS AT WHICH BLOOD IS EJECTED FROM RIGHT VENTRICLE

Answer 5

SHORTENING OF LONGITUDINAL AXIS
MOVEMENT OF FREE RV TOWARDS CONVEX INTERVENTRICULAR SEPTUM
CONTRACTION OF LV CAUSE GREATER CURVATURE OF SEPTUM

Question 6

FUNCTIONAL GEOMETRY OF LV

Answer 6

HAS SMALL SA RELATIVE TO V
CONTRACTION RESULT IN SHORTENING OF LENGTH AND DIAMETER
LATTER PRODUCES GREATER POWER

Question 7

BP

Answer 7

CO*PVR

SVHRPVR

Question 8

PEAK PRESSURE IN CENTRAL AORTA

Answer 8

SV OF LEFT VENTRICLE (DIURETICS)
PEAK RATE OF EJECTION (BETA BLOCKADE)
THE DISTENSIBILITY OF THE AORTA (VASODILATORS)