peripheral circulation

Question 1

peripheral circulation

Answer 1

• pulmonary circuit
• systemic circuit
• R and L heart ventricle

Question 2

RIGHT VENTRICLE

Answer 2

• weaker

Question 3

LEFT VENTRICLE

Answer 3

• stronger

- more powerful pump

Question 4

systemic circuit

Answer 4

• higher pressure

Question 5

flow to pulmonary and systemic circuit

Answer 5

• equal

Question 6

RIGHT AND LEFT VENTRICLE

Answer 6

• has EQUAL CARDIAC OUTPUT

- FLOW EQUAL

Question 7

pulmonary arterial blood and R atrium has

Answer 7

• the same systemic mixed venous blood entering

Question 8

RIGHT ATRIUM (S.C)

Answer 8

• 0 mm Hg pressure

Question 9

peripheral veins (S.C)

Answer 9

• 15 mm Hg

Question 10

pressure gradient (S.C)

Answer 10

• 93 mm Hg
• great pressure gradient
• to facilitate the return of blood to the heart
• aorta==> RA
• pressure gradient is proportional to venous return

Question 11

R ventricle (P.C)

Answer 11

• 25/0 mm Hg

Question 12

L ventricle (S.C)

Answer 12

• 120/0 mm Hg

Question 13

pulmonary artery (P.C) (systolic25/diastolic8 )

Answer 13

• 25/8 mm Hg

Question 14

aorta (S.C) (systolic 120/ diastolic 80)

Answer 14

• 120/80 mm Hg

Question 15

Mean pulmonary artery or pulmonary wedge pressure (P.C)

Answer 15

• 15 mm Hg

- for LV pressure measurement

Question 16

mean arterial blood pressure (S.C)

Answer 16

• 93 mm Hg

Question 17

capillary (P.C)

Answer 17

• 7-9 mm Hg

Question 18

capillary skeletal renal glomerular pressure (S.C)

Answer 18

30 mm Hg

45-50 mm Hg

Question 19

L atrium (P.C)

Answer 19

• 5- 10 mm Hg

Question 20

pressure gradient (P.C)

Answer 20

• 15-5= 10 mm Hg

Question 21

pulmonary circuit

Answer 21

• begin with pulmonary artery and ends with pulmonary vein

- pressure difference PA-PV=10

Question 22

systemic circuit

Answer 22

• begins with aorta and ends in right atrium (0 mm Hg)

- pressure difference aorta - RA= 93

Question 23

patient with R ventricular failure develop peripheral edema RV (25)==>RA(0)

Answer 23

• normal pressure of 25 mmHg in RV will increase due to backing up of blood 40 mm Hg then normal pressure in RA 0 due to increase in the pressure in RV pressure in RA will become 20
• pressure gradient systemically 93 mm Hg make it 100
• 100 minus 20 pressure from RA
• 80 mm Hg
• therefore DECREASE IN PRESSURE GRADIENT causing decrease in venous return causing stasis of blood in peripheral veins
• causing INCREASE HYDROSTATIC PRESSURE in the capillary
• INCREASE FILTRATION
  = EDEMA

Question 24

DECREASE VENOUS RETURN

Answer 24

• increase capillary pressure that leads to edema

Question 25

systemic circuit

Answer 25

- AORTA - ARTERIES - ARTERIOLES - CAPILLARIES - VENULES - VEINS - VENA CAVAE

Question 26

ARTERIOLES

Answer 26

- has the GREATEST PRESSURE DROP - 80 TO 40 mm Hg - due to massive branching of vessels - increases cross sectional area - decrease fluid in vessel BENEFITS - low pressure in the capillaries to facilitate the filtration and exchange

Question 27

AORTA

Answer 27

- SMALLEST CROSS- SECTIONAL AREA | - highest velocity

Question 28

CAPILLARIES

Answer 28

- LARGEST CROSS- SECTIONAL AREA | - lowest velocity

Question 29

velocity is

Answer 29

- inverse to cross sectional area | - lowest velocity

Question 30

systemic VEINS

Answer 30

- has the LARGEST blood volume | - very high compliance compared to systemic ARTERIES

Question 31

pulmonary system/VESSELS

Answer 31

- has the second largest blood volume | - very high compliance systemic ARTERIES