Anterior Forearm Flashcards
Where does pronator teres originate?
Medial epicondyle of humerus
How many heads does pronator teres have?
2
How does the median nerve enter the forearm?
Through the cubital fossa and between the 2 heads of pronator teres
What forms the medial boundary of the cubital fossa?
Lateral side of pronator teres
Where do we often take blood from?
Median cubital vein
What does the median cubital vein connect?
Cephalic and basilic veins
What structures does the cubital fossa contain?
Radial nerve
Biceps brachii tendon
Brachial artery
Median nerve
Which artery do we use to measure BP?
Brachial artery
Which artery is most superficial: radial or ulnar?
radial artery
Which artery supplies the most blood to the hand?
Ulnar artery
What are the general functions of the anterior forearm compartment?
Flexion and pronation
How many muscles are in the anterior forearm and in how many layers?
8 muscles
3 layers
How many superficial anterior forearm muscles are there and what are they?
4 Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris
Which superficial anterior forearm muscle do 30% of people not have?
palmaris longus
Which muscle lays in the middle part of the anterior forearm?
Flexor digitorum superficialis
What is the action of the flexor digitorum superficialis?
Flexes the proximal interphalangeal joints and metacarpophalangeal joints
How many deep anterior forearm muscles are there and what are they?
3
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
Which 2 muscles are the ulnar nerve and ulnar artery sandwiched between?
Flexor carpi ulnaris and the flexor digitorum profundus
Which artery is most superficial: radial or ulnar?
radial artery
Which artery supplies the most blood to the hand?
Ulnar artery
What are the general functions of the anterior forearm compartment?
Flexion and pronation
How many muscles are in the anterior forearm and in how many layers?
8 muscles
3 layers
How many superficial anterior forearm muscles are there and what are they?
4 Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris
Which superficial anterior forearm muscle do 30% of people not have?
palmaris longus
Which muscle lays in the middle part of the anterior forearm?
Flexor digitorum superficialis
What is the action of the flexor digitorum superficialis?
Flexes the proximal interphalangeal joints and metacarpophalangeal joints
How many deep anterior forearm muscles are there and what are they?
3
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
Which 2 muscles are the ulnar nerve and ulnar artery sandwiched between?
Flexor carpi ulnaris and the flexor digitorum profundus
What passes through the carpal tunnel?
4 tendons of flexor digitorum profundus
4 tendons of flexor digitorum superficialis
Tendon of flexor pollicis longus
Median nerve
What forms the roof of the carpal tunnel?
Flexor retinaculum
Where do the tendons of flexor digitorum superficialis attach?
Shaft of middle phalanges
Where do the tendons of flexor digitorum profundus attach?
Base of the distal phalanges
What is the origin of FCU?
Medial epicondyle of humerus
What is the insertion of FCU?
Pisiform
What it the action of FCU?
Flexion and Adduction of wrist
What is the origin of palmaris longus?
Medial epicondyle of humerus
What is the insertion of palmaris longus?
Flexor retinaculum
What is the action of palmaris longus?
Flexion at wrist
What is the origin of FCR?
Medial epicondyle humerus
What is the insertion of FCR?
Base of metacarpals II and III
What is the action of FCR?
Flexion and abduction of wrist
What is the action of FDS?
Flexes MCP joints
Flexes proximal IP joints
Flexes wrist
What is the origin of FDP?
Ulna
What is the action of FDP?
Flexes distal IP joints
Flexes MCP joints
What is the origin of FPL?
Radius
What is the attachment of FPL?
Base of distal phalanx of thumb
What is the action of FPL?
Flexes IP and MCP joints of thumb
What is the origin of pronator quadratus?
Ulna
What is the insertion of pronator quadratus?
Radius