BIOS 252 Week 1 Case Study: Muscle

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Chamberlain University

BIOS-252 Anatomy & Physiology II with Lab

Prof. Name

Date

Question	Answer
Name the muscles severed during the amputation event.	The muscles severed during the amputation event include: Flexor Carpi Ulnaris, Extensor Carpi Ulnaris, Extensor Digiti Minimi, Extensor Digitorum, Extensor Carpi Radialis Brevis, Extensor Pollicis Brevis, Extensor Pollicis Longus, Extensor Indicis Proprius.
If the patient were no longer able to properly pronate his arm, which muscle do you think has been compromised?	The muscles that would likely be compromised include the Pronator Teres and the Pronator Quadratus.
Why does a patient with a severed limb have a smaller window of time for successful replantation compared to finger replantation surgery?	A severed limb has a smaller window for replantation due to the larger muscles, bones, nerve endings, and the overall tissue complexity compared to fingers, which have fewer muscles and bones. The metabolic demands of larger structures, such as limbs, are higher, making healing and repair more energy-intensive.
What tissue type can be found bridging the two halves of the once severed muscle bellies? Why?	Ligaments, which are strong fibrous tissues, connect bones. Muscles grow through hypertrophy (increased cell size) and hyperplasia (increased cell number), facilitating healing in cases of injury.

Leversedge, F. J. (2018, April). Wrist Sprains. Retrieved from OrthoInfo: https://orthoinfo.aaos.org/en/diseases–conditions/wrist-sprains

Luna, D. (2021, March 22). Muscle Hypertrophy vs Hyperplasia: The Difference Explained. Retrieved from Inspire Us: https://www.inspireusafoundation.org/muscle-hypertrophy-vs-hyperplasia/