3.1.2. Intermediate Musles of the Anterior Forearm Flashcards
What are the Categories of the Muscles of the Anterior Compartment of the Forearm?
- Superficial
- Intermediate
- Deep
What are the General Actions of the Muscles of the Anterior Compartment of the Forearm?
- Flexors of the Wrist
- Flexors of the Fingers
- Pronators of the Forearm
What is the Only Intermediate Muscle of the Anterior Compartment of the Forearm?
Flexor Digitorum Superficialis
Is the Flexor Digitorum Superficialis always classed as an Intermediate Muscle of the Anterior Compartment of the Forearm?
No, it is sometimes classified as a Superficial Muscle of the Anterior Compartment of the Forearm
Where is the Intermediate Muscles of the Anterior Compartment of the Forearm located?
Between the:
1. Superficial Muscles of the Anterior Compartment of the Forearm
2. Deep Muscles of the Anterior Compartment of the Forearm
How many Heads does the Flexor Digitorum Superficialis have?
2
Where do the 2 Flexor Digitorum Superficialis Heads Originate from?
- Medial Epicondyle of the Humerus
- Radius
Why is the Flexor Digitorum Superficialis a good Anatomical Landmark?
The Median Nerve and Ulnar Artery pass between the 2 Heads, and then Travel Posteriorly
What happens to the Muscle as it travels?
It Splits into 4 Tendons
Where do the 4 Tendons of the Flexor Digitorum Superficialis attach Distally?
Middle Phalanges (Phalanx) of the 4 Fingers
What are the functions of the Flexor Digitorum Superficialis?
- Flexion of the Metacarpophalangeal Joints at the 4 Fingers
- Flexion of the Proximal Interphalangeal Joints at the 4 Fingers
- Flexion of the Wrist
Can the Flexor Digitorum Superficialis act on the Distal Interphalangeal Joints?
No, only on the Proximal Interphalangeal Joints
What Muscle acts on the Distal Interphalangeal Joints?
Flexor Digitorum Profundus
What is the innervation of the Flexor Digitorum Superficialis?
Median Nerve
