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Otago HSFY chat - archive

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Hey guys- do we need a calculator for the HUBS exam? For calculations regarding tonicity, osmolarity, etc? Thanks
 
hi guys

hi guys, which bone cells are involved in the remodeling of bones? I thought it was only osteoblasts and osteoclasts, but I read somewhere that it's osteoblasts + osteocalsts + osteocytes? I thought osteocytes is only used for communications during bone growth?
Could someone please clear this up for me?

Cheers
 
juna said:
Hey guys- do we need a calculator for the HUBS exam? For calculations regarding tonicity, osmolarity, etc? Thanks
Click to expand...


BB says only to bring pencils so I dont think we will need to calculate it (though if we do, I think it will be basic 1:1 ration calculations)

studyinghardatm said:
hi guys, which bone cells are involved in the remodeling of bones? I thought it was only osteoblasts and osteoclasts, but I read somewhere that it's osteoblasts + osteocalsts + osteocytes? I thought osteocytes is only used for communications during bone growth?
Could someone please clear this up for me?

Cheers
Click to expand...


Remodelling of bone is by osteoblasts and ostelclasts. (why would osteocytes be involved?)

Are you referring to just remodelling or repair from fracture?


BTW, does anyone know the timeline of bone fracture repair (i.e what happens after so many weeks etc)
 
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Remember that osteoblasts turn into osteocytes, so osteocytes can be mapped into the bone growth process (even though they don't play an active role in it).
 
Osteocytes act as sensors for bone remodelling and they signal osteoblasts and osteoclasts when bone remodelling needs to occur.

EDIT: And do we have to know the timeline of bone fracture healing? I don't think the lecturer put any emphasis on that...:/
 
SeeKay said:
EDIT: And do we have to know the timeline of bone fracture healing?
Click to expand...

Knowing the specific stages and the points in time which they occur will pretty much be it. Edema, Soft callus, bony callus and how many weeks in does each stage occur.

If there are any CELS191 questions I'd be glad to help. LOL.
 
epikness said:
Knowing the specific stages and the points in time which they occur will pretty much be it. Edema, Soft callus, bony callus and how many weeks in does each stage occur.

If there are any CELS191 questions I'd be glad to help. LOL.
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lol, just wait until after saturday, then the CELS questions will come flooding in.
 
couple quick questions in the late swing phase of gait...the knee is fully extended..and its acting as the agonist and therefore concentric right? also, the osmolarity of our IC and EC fluid is normally b/w 275-300 mosmol/l...>300 means hypotonic and <275 means hypertonic yeah?

gl for tom morning kids :)
 
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sunny123 said:
its acting as the agonist and therefore concentric right?
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Yes, I think that's correct - if you are talking about Quadriceps Femoris?

the also, the osmolarity of our IC and EC fluid is normally b/w 275-300 mosmol/l...>300 means hypotonic and <275 means hypertonic yeah?
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no no no not necessarily! <275 means HYPO-OSMOTIC, and >300 means HYPER-OSMOTIC! you've got them the other way around - think of hyperactivity - the HYPER stands for increased craziness (alluding to the high levels of impearmeant solutes)... and the hypo is just the opposite. Oh and also, you can't assume that it will hypo-TONIC or hyper-TONIC... tonicity referes to the effect of a solution on the cell - so this is pretty much only affected by IMPERMEANT solutes (have a quick look at the powerpoints for GLM1 - can't remember which one has the proper definitions, but its on there!) You can only state whether something is HYPO/HYPER/ISO-TONIC when you haven't been told that there is a permeant solute in the mix --- if that makes sense? (Look at the Urea example on the handout) [/QUOTE]
gl for tom morning kids :)
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You too! :)

Hope that helps :)

EDIT: i just remembered - there is a much more comprehensible explanation of tonicity and osmolarity a couple of pages back - [MENTION=9988]Cathay[/MENTION] wrote it... i can't find it... he might be able to link it to you?
 
Hope everyone went well with the test.

Personally it was pretty easy, I think there was 1 question with content from the textbook so I had to make an educated guess on that one. Otherwise, pretty happy :)
 
Yes twas pretty good! Pretty happy, although I ended up forgetting some of the Homeostasis stuff - all because i decided to inflate my brain with bones, bones and bones :/ Ah well, itsok, it was 1/2 questions... CELS Terms Test... HERE I COME!

[OFFTOPIC] lol kidding, i'm currently playing 'Running Fred' :D who doesn't deserve a break after that? lol [/OFFTOPIC]

SeeKay said:
There was a question from the HUBS booklet (module 1) which I haven't looked at...:(
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aww dw! it was just one question! PLUS you might have guessed right! There were several people (in my little exam stream) who complained *rather loudly* about some of the questions about homeostasis - (lol, a couple of eavesdrops later, i learnt that they felt cheated by the musculoskeletal lecturer, because she apparently did not go through all the homeostasis stuff, how dense these people can be... IDK)
/rambling

BASICALLY: don't worry, there were people who struggled, and there will be plenty of people who made silly mistakes (including myself) :) Take a chill pill, you will be fine, just focus on what's to come :)
 
yip fml, made like 4-5 ridic mistakes, including changing heel stance from hip flexion to hip extension...WHAT ON EARTH WAS I THINKING :(

ohwell, hope it all went well for you guys :) no point dwelling on it too long!

how long does it take to get MCQ terms tests back from hubs?
 
sunny123 said:
yip fml, made like 4-5 ridic mistakes, including changing heel stance from hip flexion to hip extension...WHAT ON EARTH WAS I THINKING :(

ohwell, hope it all went well for you guys :) no point dwelling on it too long!

how long does it take to get MCQ terms tests back from hubs?
Click to expand...



Oh well, best thing to do now is to focus on CELS (that's when you'll really be screwed over if you mess up too badly! x,x )
 
sunny123 said:
yip fml, made like 4-5 ridic mistakes, including changing heel stance from hip flexion to hip extension...WHAT ON EARTH WAS I THINKING :(

ohwell, hope it all went well for you guys :) no point dwelling on it too long!

how long does it take to get MCQ terms tests back from hubs?
Click to expand...

If you're lucky, about 1-2 weeks. If ITS decides to stuff up, probably about 3
 
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