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?

ABrachioradialis

BExtensor carpi radialis

DExtensor carpi ulnaris

CFlexor diqitorum lonqus

Show Suggested Answer

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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Helene

2 hours ago

True! Those muscles are crucial for wrist abduction.

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Rosalyn

5 days ago

Don't forget about the abductor pollicis longus!

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Maryln

10 days ago

Agreed! It really helps with wrist movement.

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Lucille

16 days ago

I think the extensor carpi radialis would be key.

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Enola

2 months ago

Sounds right, but I’d double-check the anatomy.

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Vince

2 months ago

Don't forget about the abductor pollicis longus!

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Gladys

2 months ago

Wait, are you sure about that? I thought it was just the extensors.

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Roxanne

3 months ago

Totally agree, those are the main ones.

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Peggie

3 months ago

Radial flexor and extensor muscles help with that!

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Fatima

3 months ago

Wrist abduction? I just use my mind to move my wrist. No muscles required.

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Jeffrey

3 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

3 months ago

Hmm, I'm not sure about this one. Maybe the brachioradialis and supinator muscles?

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Dudley

3 months ago

I think the flexor carpi radialis and ulnaris are the muscles responsible for wrist abduction.

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Apolonia

4 months ago

The wrist abduction muscles are definitely the extensor carpi radialis longus and brevis.

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Hannah

4 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

4 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

5 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

5 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

5 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

5 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

5 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

6 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

6 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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