I still dont understand this one.

Prep for USMLE Forum

» Log in | Register

Forum

Step 1

Match

Prep4USMLE Forum » USMLE Step 1 Forum » Physiology Forum

I still dont understand this one.

Author

8 Posts

antidepressant
Forum Guru
avatar

Topics: 29
Posts: 574

12/17/07 - 06:28 PM

how can 1 become smaller , what value 1 has. even if its inversely proportional, it is supposed to be highest flow, what am i missing?

Attached Files:
phy.jpg (186 KB, 84 downloads)

___________________
Step 1 can not defeat me!!!!!!!!

hero
Forum Elite

Topics: 37
Posts: 458

12/18/07 - 12:51 AM

Flow = Pressure grad : 1 : rad4 x visc = Pres grad x rad4 x visc : 1

1. 200 x 1 /1 = 200
2. 100 x 2 x2x2x2 /1 =1600
3. 50 x 16 = 800
4. 25 x 4 x4x4x4 x 5 = more than 200
5. 1 x 6x6x6x6 x 10 = more than 200 again

antidepressant
Forum Guru
avatar

Topics: 29
Posts: 574

12/18/07 - 02:06 PM

Thanks a lot , Hero. Whenever I see math, I run in opposite direction. If I get this in usmle, i will gain one extra point because of you, thanks.

___________________
Step 1 can not defeat me!!!!!!!!

hero
Forum Elite

Topics: 37
Posts: 458

12/18/07 - 04:42 PM

and they do like this kind of a physio-math mix smiling face

Dr_C
Forum Newbie

Topics: 3
Posts: 27

05/14/08 - 01:00 PM

well even if u r not good at math, if u know that what mostly affect the flow and the pressure is the radius, with a smaller radius u will have less blood flow. more water with greater pressure is allowed to flow through a big hole than a smaller hole.

bioguy
Forum Guru
avatar

Topics: 46
Posts: 825

05/15/08 - 12:34 PM

i hate this mad

new_n_lost
Politically InCorrect
avatar

Topics: 653
Posts: 6,070

05/15/08 - 12:43 PM

bioguy wrote:
i hate this mad

Feelings mutual here.

___________________
FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."

Tiff
Forum Guru

Topics: 54
Posts: 563

05/15/08 - 12:58 PM

Dr_C wrote:
well even if u r not good at math, if u know that what mostly affect the flow and the pressure is the radius, with a smaller radius u will have less blood flow. more water with greater pressure is allowed to flow through a big hole than a smaller hole.

rationalized this way makes sense. all that math is scary.

You don't have permission to post.