Biology Forums - Study Force

Part A:
Increasing blood vessel length _______.
   
A.   Has the same effect as decreasing blood vessel radius and increases resistance to flow
B.   Increases resistance to flow
C.   Has the same effect as increasing blood vessel radius and increases resistance to flow
D.   Has the same effect as increasing blood vessel radius
E.   Has the same effect as decreasing blood vessel radius

Part B:
Which flow tube length has the greatest flow rate?

A.   20 mm
B.   10 mm
C.   40 mm
D.   30 mm
E.   All flow tube lengths have the same flow rate.

Part C:
Which of the following has the greatest effect on blood flow?
   
A.   Blood vessel radius, viscosity and blood vessel length all have an equal effect.
B.   Viscosity
C.   Blood vessel length
D.   Blood vessel radius

Part D:
Which of the following describes why the body might need to increase vessel length?
   
A.   To accommodate height changes
B.   To accommodate weight loss
C.   To accommodate weight gain and height changes
D.   To accommodate weight gain

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Thank you for your help!   ;D