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FSMTB MBLEx Exam - Topic 7 Question 55 Discussion

Actual exam question for FSMTB's MBLEx exam
Question #: 55
Topic #: 7
[All MBLEx Questions]

Which option best muscles would contribute to wrist abduction?

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Suggested Answer: B

Wrist abduction is another term for radial deviation of the wrist. Of the muscles listed, the extensor carpi radialis is the muscle responsible for wrist abduction, which is to laterally extend the wrist away from the body while in correct anatomical position.


by Timmy at Jan 27, 2026, 02:13 PM

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Enola
15 days ago
Sounds right, but I’d double-check the anatomy.
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Vince
20 days ago
Don't forget about the abductor pollicis longus!
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Gladys
25 days ago
Wait, are you sure about that? I thought it was just the extensors.
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Roxanne
1 month ago
Totally agree, those are the main ones.
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Peggie
1 month ago
Radial flexor and extensor muscles help with that!
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Fatima
1 month ago
Wrist abduction? I just use my mind to move my wrist. No muscles required.
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Jeffrey
2 months ago
The answer is clearly the extensor carpi radialis longus and brevis. I mean, how else would you abduct your wrist?
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Stephaine
2 months ago
Hmm, I'm not sure about this one. Maybe the brachioradialis and supinator muscles?
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Dudley
2 months ago
I think the flexor carpi radialis and ulnaris are the muscles responsible for wrist abduction.
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Apolonia
2 months ago
The wrist abduction muscles are definitely the extensor carpi radialis longus and brevis.
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Hannah
2 months ago
I studied wrist movements recently, and I think the radial deviation is what we're looking for here, but I might be mixing it up with flexion.
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Lashandra
2 months ago
I feel like the abductor pollicis longus is definitely part of it, but I can't recall if there are others that contribute as well.
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Lennie
3 months ago
I remember practicing a question about wrist movements, and I think the flexor carpi radialis might also play a role in abduction.
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Roslyn
3 months ago
I think the extensor carpi radialis longus and brevis are involved in wrist abduction, but I'm not entirely sure.
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Jennie
4 months ago
Ugh, I hate these anatomy questions. I'm just going to make an educated guess and move on. Hopefully I can make up points elsewhere on the exam.
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Odette
4 months ago
Wait, which option is "best"? I'm not sure how to interpret that part of the question. I'll have to analyze the muscle functions more closely.
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Nancey
4 months ago
No problem, I've got this. The muscles that contribute to wrist abduction are the extensor carpi radialis longus and brevis. I'm confident in that answer.
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Ulysses
4 months ago
Okay, wrist abduction - that's moving the hand away from the body, right? I'm pretty sure the extensor muscles would be involved, but I'll double-check my notes to be sure.
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Kenneth
4 months ago
Hmm, this seems like a tricky anatomy question. I'll need to think through the muscles involved in wrist movement.
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