Muscles of the Forearm (Division, Origin, Insertion, Function)

Content
Introduction 0:00
Division of the Forearm Muscles 0:23
Anterior (Flexor) Group 0:40
Pronator Quadratus 1:13
Flexor Digitorum Profundus 1:41
Flexor Pollicis Longus 2:11
Flexor Digitorum Superficialis 2:36
1st Layer 3:14
Lateral Group 4:48
Brachioradialis 5:28
Extensor Carpi Radialis Longus 5:55
Extensor Carpi Radialis Brevis 6:17
Posterior Group 6:42
Abductor Pollicis Longus 7:05
Extensor Pollicis Brevis 7:25
Extensor Pollicis Longus 7:45
Extensor Indicis 8:05
Extensor Digitorum 8:35
Extensor Digiti Minimi 8:57
Extensor Carpi Ulnaris 9:20

Muscles of the forearm
- Anterior (Flexor) group
- Lateral (Radial) group
- Posterior (Extensor) group

Anterior (Flexor) group
- 1st Layer
○ Palmaris Longus
○ Flexor Carpi Radialis
○ Pronator Teres
○ Flexor Carpi Ulnaris
- 2nd Layer
○ Flexor Digitorum Superficialis
- 3rd Layer
○ Flexor Digitorum Profundus
○ Flexor Pollicis Longus
- 4th Layer
○ Pronator Quadratus

Pronator Quadratus
musculus pronator quadratus
- O: Anterior surface of Ulna
- I: Anterior surface of Radius
- F: Pronation of forearm

Flexor Digitorum Profundus
Musculus flexor digitorum profundus
- O: Anterior surface of Ulna
I: Base of the distal phalanges (2-5 finger)
basis phalangis distalis (II-V)
- F:
Flexion of 2-5th fingers at
metacarpophalangeal and
interphalangeal joints
Accessory flexion of hand

Flexor Pollicis Longus
musculus flexor pollicis longus
- O: Anterior surface of Radius
I: Base of the distal phalanges of the thumb
basis phalangis distalis pollicis
- F: Flexion of thumb at
metacarpophalangeal and
interphalangeal joints
Accessory flexion of hand

Flexor Digitorum Superficialis
musculus flexor digitorum superficialis
O:
Medial epicondyle of humerus
Ulna
Anterior surface of radius
I: Base of the middle phalanges of 2-5th fingers
basis phalangis mediale II-V
F:
Flexion of 2-5 fingers at
metacarpophalangeal and proximal
interphalangeal joints
Accessory flexion of hand
Pronator Teres
musculus pronator teres
- I: Anterolateral surface of Radius

Flexor Carpi Radialis
musculus flexor carpi radialis
- I: Base of 2nd and 3rd metacarpal

Palmaris Longus
musculus palmaris longus
I: Palmar Aponeurosis
aponeurosis palmaris
Flexor Carpi Ulnaris
musculus flexor carpi ulnaris
- I:
Pisiform
Hamatum and
base of 5th metacarpal
Lateral (Radial) group
- Superficial Layer
○ Brachioradialis
○ Extensor Carpi Radialis Longus
○ Extensor Carpi Radialis Brevis
- Deep Layer
Supinator

Supinator
musculus supinator
O:
Lateral Epicondyle
Radial Collateral Ligament
Ulna
- I: Lateral Surface of Radius
- F: Supination of the forearm

Brachioradialis
musculus brachioradialis
- O: Lateral margin of humerus
- I: Radius above Styloid Process
F:
- Supination/Pronation
- Flexion of forearm
- Stabilises elbow joint

Extensor Carpi Radialis Longus
musculus extensor carpi radialis longus
- O: Lateral margin + Lateral Epicondyle of Humerus
I: Base of 2nd metacarpal
basis ossis metacarpalis II
F:
Abduction of hand
Extension of hand
Extensor Carpi Radialis Brevis
musculus extensor carpi radialis brevis
- O: Lateral Epicondyle of Humerus
I: Base of 3nd metacarpal
basis ossis metacarpalis III
F:
Abduction of hand
Extension of hand

Posterior (Extensor) group
- Superficial Layer
○ Extensor Digitorum
○ Extensor Digiti Minimi
○ Extensor Carpi Ulnaris
- Deep Layer
○ Abductor Pollicis Longus
○ Extensor Pollicis Brevis
○ Extensor Pollicis Longus
○ Extensor Indicis

Abductor Pollicis Longus
musculus abductor pollicis longus
O:
Posterior surface of Ulna/Radius
Interosseous membrane
I: Base of 1st metacarpal
F: Abduction of thumb

Extensor Pollicis Brevis
musculus extensor pollicis brevis
O:
Posterior surface of Radius
Interosseous membrane
I: Base of proximal phalanx of thumb
F: Extension and abduction of thumb

Extensor Pollicis Longus
musculus extensor pollicis longus
O:
Posterior surface of Ulna
Interosseous membrane
I: Base of distal phalanx of thumb
F: Extension of thumb

Extensor Indicis
musculus extensor indicis
O:
Posterior surface of Ulna
Interosseous membrane
I: Base of middle/distal phalanx of index finger
F: Extension of Index finger (2nd finger)

Extensor Digitorum
musculus extensor digitorum
O: Lateral Epicondyle of Humerus
I: Base of middle and distal phalanges of 2-5th fingers
F:Abduction of Fingers
Extension of hand

Extensor Digiti Minimi
musuclus extensor digiti minimi
O: Lateral Epicondyle of Humerus
I: Base of middle and distal phalanges of 5th fingers
F:Extension of 5th finger

Extensor Carpi Ulnaris
musculus extensor carpi ulnaris
O:
Lateral Epicondyle of Humerus
Posterior surface of Ulna
I: Base of 5th metacarpal bone (medial side)
basis ossis metacarpalis V
F:Extension of hand
Adduction of hand

[rosiaamedommesulemana]

L
One of the greatest resources for every med student...meditay is simply the best

[thandomabizela]

Hey Meditay!! 👋🏽👋🏽 Please consider doing cranial nerves? 🤗 You’re the only one that I know that could explain it better. I’ve watched all your CNS videos.

[ibeemmanuel]

This was a really amazing video. Thank you so much

[ukgxmonster]

Gratz, respect from Kazakhstan national medical university 🙌🏼

[irismendoza]

This is a helpful video! Thank you so much! May I suggest that next time please include the innervation of the muscles

[aliyoussef]

بعد كلبي اخوي خلصتني من تعب جبير
رحمة الله والديك
صدك شرح متعوب عليه
عااااشت ايدك يا بطل ❤️💯👍

[malakabuarra]

أكتر فيديوهات تشريح بستفيد منها🤍 شكراً من القلب🤍🤍

[vulnikkura]

Omg bless you. Thus is wonderful! ^__^

[arura]

Amazing video sir
You cover every hard muscles of forearm just in one video in easiest way with easiest animation
Tysm sir !
God bless you❤️

[praveenavenkatesan]

Really it's getting more easier for my anatomy revisions after watching this video....thank u so much. And kindly upload some topics from physiology.

[saja_elhaj]

Thank you so much....
You really helped me understand many things 💛💛💛💛

[wordofsushant]

please sir make about bones of superior extremity and inferior Extremity

[hrsachan]

Flexor Carpi Radialis does not adduct the hand, it abducts it (radial deviation).

[lydiaayaya]

Can I get another video on nerve supply

[PsycoCount]

Slow the speed to .75, it's perfect.

[hamzasyed]

Please upload the lower muscles, and please check you email :)

[sohilamahmoud]

Hello, the muscles of the hand Video is not in this play list, is it deleted or in other place, can anyone helllpp please 🙏🏻