Hemodynamics & Blood Composition

Question 1

What is the difference between laminar and turbulent flow?

Answer 1

Laminar - streamline
Turbulent - Branching

Question 2

What is cardiac output?

Answer 2

• Volume distributed by
  each ventricle per min
  [Liters/min]

Question 3

CO = ____ L/min

Answer 3

5

Question 4

What controls CO?

Answer 4

HR (BPM)
Stroke Volume (mL/Beat)

Question 5

What is stroke volume?

Answer 5

blood pumped during each heart beat

Question 6

T/F: CO increased with exercise

Answer 6

True

Question 7

Exercise does what to CO distribution?

Answer 7

Altered by vascular resistance (constriction and dilation)

Question 8

Fluid flows from a point of _____ pressure
to a point of _____ pressure.

Answer 8

High; low [bulk flow]

Question 9

What opposes fluid flow?

Answer 9

Resistance (R)

Question 10

How much of body mass is Blood volume?

Answer 10

7-8% (5L)

Question 11

What type of fluid is plasma?

Answer 11

Extracellular

Question 12

What is the composition of plasma?

Answer 12

91% water
2% solutes (ions, glucose, waste)
7% plasma proteins

Question 13

What do albumins do?

Answer 13

-Collodial Osmotic prssure
-Buffer

Question 14

What do globulins do?

Answer 14

Immune function
transport

Question 15

What do fibrinogens do>

Answer 15

Clotting

Question 16

What is an average hematocrit?

Answer 16

45% (male 42-2, female 27-47)

Question 17

Increased destruction of
erythrocytes is associated with:

Answer 17

a) inherited: sickle cell disease
and thalassemia
b) Infections
c) Medications
d) Cancers
e) Overactive spleen

Question 18

Decreased formation of erythrocytes is
associated with:

Answer 18

a) dietary/nutritional deficiencies
of iron, B12 and/or folic acid
b) bone marrow failure
c) hemorrhage leading to iron
deficiency
d) Inadequate secretion of
erythropoietin in kidney disease