Covers the muscles of the forearm in three groups: anterior flexors in superficial, intermediate and deep layers, lateral muscles, and posterior extensors in superficial and deep layers. For each muscle it gives origin, insertion, innervation and function, with tables for each layer and a short note on blood supply. It also notes that most anterior muscles are supplied by the median nerve, with the exceptions stated, and ends with a brief section on the antebrachial fascia.
Topic 44 of 49 in the MU Sofia syllabus for Anatomy (Bones and Muscles) (Medicine, Years 1 and 2). The free AceMed note covers it in 5 sections, about 104 words (6 min of reading), with 13 flashcards.
In this note
FOREARM MUSCLES
Anterior (flexor) muscles: (3 layers)
Lateral muscles: (2)
Posterior (Extensor) muscles: (10)
ANTEBRACHIAL FASCIA
FOREARM MUSCLES
45+46
All anterior muscles innervated by Median n. except flexor carpi ulnaris & medial half of flexor digitorum profundus
Arm muscles control forearm actions
forearm muscles control wrist actions
Anterior (flexor) muscles: (3 layers)
→ Superficial :
Blood Supply:
Post. ulnar recurrent arts.
Ant. ulnar recurrent arts.
Recurrent ulnar art. + radial arteries
Brachial, ulnar & radial arteries
*Median nerve exits the cubital fossa by passing between the two heads of the muscle.
→ Intermediate:
→ Deep
45+46 cont.
Posterior (Extensor) muscles: (10)
→ Superficial layer :
carpai ulnaris → metacarpal V
carpi radialis → u. II & III
pollicis longus → thumb.
digitorum → 4 fingers.
45+46 cont 2
→ Deep layer
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