nerves innervating the muscles of the upper extremity
Topic: Anatomy
Created on Sunday, September 3 2006 by
Last modified on Sunday, September 3 2006.
Which of the following is most accurate regarding nerves innervating the muscles of the upper extremity?
A) The palmar interossei receives innervation from axillary nerve. B) Adductor pollicis receives innervation from posterior interosseous nerve. C) Flexor digitorum superficialis receives innervation from spinal segment T1. D) Lumbricals IV receives innervation from spinal accessory nerve. E) Flexor carpi radialis receives innervation from spinal segment C1.
This question was created on September 03, 2006 by .
This question was last modified on September 03, 2006.
ANSWERS AND EXPLANATIONS
A) the palmar interossei receives innervation from axillary nerve.
This answer is incorrect.
The statement, "the palmar interossei receives innervation from axillary nerve." is false.
the palmar interossei receives innervation from ulnar nerve, receives innervation from spinal segment C8, and receives innervation from spinal segment T1. (
See References)
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B) adductor pollicis receives innervation from posterior interosseous nerve.
This answer is incorrect.
The statement, "adductor pollicis receives innervation from posterior interosseous nerve." is false.
adductor pollicis receives innervation from ulnar nerve, receives innervation from spinal segment C8, and receives innervation from spinal segment T1. (
See References)
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C) flexor digitorum superficialis receives innervation from spinal segment T1.
This answer is correct.
The statement, "flexor digitorum superficialis receives innervation from spinal segment T1." is true.
flexor digitorum superficialis receives innervation from median nerve, receives innervation from spinal segment C7, receives innervation from spinal segment C8, and receives innervation from spinal segment T1. (
See References)
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D) lumbricals IV receives innervation from spinal accessory nerve.
This answer is incorrect.
The statement, "lumbricals IV receives innervation from spinal accessory nerve." is false.
lumbricals IV receives innervation from ulnar nerve, receives innervation from spinal segment C8, and receives innervation from spinal segment T1. (
See References)
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E) flexor carpi radialis receives innervation from spinal segment C1.
This answer is incorrect.
The statement, "flexor carpi radialis receives innervation from spinal segment C1." is false.
flexor carpi radialis receives innervation from median nerve, receives innervation from spinal segment C6, and receives innervation from spinal segment C7. (
See References)
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References:
| 1. Guarantors of Brain. (2000). Aids to the Examination of the Peripheral Nervous System, fourth edition. W.B. Saunders, Edinburgh. | |
| 2. Moore, K.L. (1992). Clinical Oriented Anatomy, 3rd Edition. Williams & Wilkins, Baltimore. | |
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anatomy
nerves innervating the muscles of the upper extremity
Question ID: 683156834
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved.
Created: 09/03/2006
Modified: 09/03/2006
Estimated Permutations: 0