Anatomy - Anterior Forearm Flashcards
Where do the superficial muscles in the anterior compartment of the forearm originate from?
The common tendon which arises from the medial epicondyle of the humerus.
What nerve innervates flexor carpi ulnaris?
Ulnar nerve (C8-T1).
What is the action of flexor carpi ulnaris?
Flexion and adduction at the wrist.
What nerve innervates palmaris longus?
Median nerve (C6-T1).
What is the action of palmaris longus?
Flexion at the wrist.
What nerve innervates flexor carpi radialis?
Median nerve (C6-T1).
What is the action of flexor carpi radialis?
Flexion and abduction at the wrist.
What nerve innervates pronator teres?
Median nerve (C6-T1).
What is the action of pronator teres?
Pronation of the forearm.
What nerve innervates brachioradialis?
Radial nerve (C5-T1).
What is the action of brachioradialis?
Flexion of the elbow.
What artery is the brachial artery a continuation of?
The axillary artery.
What arteries does the brachial artery branch into?
The radial and ulnar arteries.
Name 3 deep muscles in the anterior compartment of the forearm.
- Flexor digitorum profundus. 2. Flexor pollicis longus. 3. Pronator quadratus.
What bone does flexor digitorum profundus originate from?
The ulna bone.
What is the innervation to flexor digitorum profundus?
- Medial half (little and ring fingers) - ulnar nerve. - Lateral half (middle and index fingers) - median nerve.
What is the action of flexor digitorum profundus?
It flexes the interphalangeal joints and the metacarphophalangeal joints.
What bone does flexor pollicis longus originate from?
The anterius radius.
What is the insertion of flexor pollicis longus?
The thumb.
What is the innervation of flexor pollicis longus?
Median nerve.
What is the action of flexor pollicis longus?
It flexes the interphalangeal joints and the metacarphophalangeal joints of the thumb.
What is the action of pronator quadratus?
It pronates the forearm.
Name 3 forearm muscles that are not supplied with the median nerve.
- Flexor carpi ulnaris. 2. The medial half of flexor digitorum profundus. 3. Brachioradialis.
What is the common flexor origin?
Medial epicondyle of the humerus. Where the superficial anterior forearm muscles originate.
Which muscles in the forearm are supplied by the ulnar nerve?
- Flexor carpi ulnaris. - Medial flexor digitorum profundus.
Define pronation.
Turning the hand so the palm is facing down.
Define supination.
Turning the hand so the palm is facing up.
Which muscles are responsible for pronation?
Pronator teres and pronator quadratus.
