Cubital Fossa and Forearm Flashcards
(45 cards)
What is the shallow depression anterior to the elbow joint called?
Cubital Fossa
What are the boundaries of the cubital fossa?
(medial, lateral, superior, floor, and roof)
Medial: Pronator teres o
Lateral: Brachioradialis o
Superior: Line connecting medial and lateral humeral epicondyles o
Floor: Brachialis and supinator muscles o
Roof: Bicipital aponeurosis (fascial extension of biceps brachii)
What runs over the bicipital aponeurosis?
Median cubital vein crosses it superficially
What are the contents of the cubital fossa? (11)
- Biceps brachii tendon
- Brachial artery and vein
- Proximal radial and ulnar arteries and veins
- Median and radial nerves
- Bicipital aponeurosis
- Median cubital vein crosses the bicipital aponeurosis superficially
Label 1-18
- Bracial fascia
- biceps brachi
- brachialis
- lateral cutaneous nerve of the forearm
- later epicondyle
- biceps brachii tendon
- brachioradialis
- radial artery
- bicipital aponuerosis
- cephallic vein
- median vein of the forarm
- medial cutaneous nerve of the forearm
- brachial artery
- brachial veins
- median nerve
- medial epicondyle
- pronator teres
- antebrachial fascia
What veiw is this?
Label 1-17
Anterior
- cephalic vein
- biceps bachii
- brchialis
- brachioradialis
- radial nerve
- deep branch of radial nerve
- superficial branch of radial nerve
- supinator
- radial artery
- Basilic vein
- brachial artery
- inferior ulnar collateral artey
- ulnar nerve
- median nerve
- medial epicondyle
- ulnar artey
- pronator teres
The forearm extends from the ___ to the ____. It contains 2 bones which are the _____ & the ____ that are connected by the _____ ____. Muscles of the forearm work to move the _____, ___, and _____. _____ ____ divides the muscles of the forearm into anterior (____) and posterior (_____) compartments.
elbow to the wrist
radius
ulna
interosseous membrane
elbow, wrist (carpal) complex, and digits (fingers)
Antebrachial fascia
flexor (remember AF)
extensor (remember PE)
The anterior compartment of the forearm contains the ___ and ____ nerves (all muscles in ant. com. are innervated by ____ EXCEPT for 1 ½ muscles.) The Ant. Com. alsor has the____, ____, and _______ areteris and veins. It has muscles that flex joints of ____, ___, and ____ and _____ the forearm. Tendons of most flexor muscles are held in place by the ____ ____ _____ and the ____ ___ (thickenings of the_____fascia)
Median and ulnar
median
Radial, ulnar and anterior interosseus arteries and veins
elbow, wrist and hand
pronate
Palmar carpal ligament
flexor retinaculum
antebrachial
All muscles of the anterior compartment are innervated by the ___ ____ except for _____ ____ ____ and the medial half of ____ ____ ______ which are innervated by the ____ ___.
median nerve
flexor carpi ulnaris
flexor digitorum profundus
ulnar nerve
The lateral half of flexor digitorum profundus that is innervated by the median nerve will help flex digits ____-___ while ulnar nerve innervation of the medial side will help flex digits ___-___.
Lateral part (to digits 2-3) by median nerve (anterior interosseous nerve); medial part (to digits 4-5) by ulnar nerve
Generally, what is the common proximal attachments, action, and innervation of the anterior compartment?
Prox attach: Medial humeral epicondyle (common flexor origin)
Action: flexion
Innervation Median nerve and some ulnar nerve
What muscles are in the superficial group of the anterior compartment?
pronator teres
Flexor carpi radialis
flexor carpi ulnaris
Palmaris longus
Tell me the the following about pronator teres:
Innervation:
Action:
Proximal attachment:
Distal attachment:
Innervation: Median nerve
Action: Pronates forearm
Proximal attachment: medial epicondyle
Distal attachment: Radius
Tell me the the following about flexor carpi radialis:
Innervation:
Action:
Proximal attachment:
Distal attachment:
o Innervation: Median nerve
o Action: Flexes and abducts hand at wrist
o Proximal attachment: Medial humeral epicondyle
o Distal attachment: Base of 2nd metacarpal
Tell me the the following about flexor carpi ulnaris:
Innervation:
Action:
Proximal attachment:
Distal attachment:
o Innervation: **Ulnar nerve**
o Action: Flexes and adducts hand at wrist
o Proximal attachment: Olecranon
o Distal attachment: Pisiform, hook of hamate, 5th metacarpal
Tell me the the following about Palmaris longus:
Innervation:
Action:
Proximal attachment:
Distal attachment:
o Innervation: Median nerve
o Action: Flexes hand at wrist and tenses palmar aponeurosis
o Proximal attachment: Medial humeral epicondyle
o Distal attachment: Flexor retinaculum, palmar aponeurosis
Label 1-8
- brachioradialis
- medial epicondyle
- pronator teres
- flexor carpi radialis
- palmaris longus
- flexor carpi ulnaris
- tendon of palmaris longus
- flexor retinaculum
label 1-9
- Medial epicondyle
- supinator
- flexor digitorum superficialis
- wrist
- carpomertacarpal
- metacarpophalangeal
- proximal
- distal
- interphalageal
Label 1-4
- supinator
- flexor digitorum profundus
- flexor pollicis longus
- pronator quadratus
What are the intermediate group muscles of the anterior compartment?
Flexor digitorum superficialis
Tell me the the following about Flexor digitorum superficialis:
Innervation:
Action:
Proximal attachment:
Distal attachment:
o Innervation: Median nerve
o Action: Flexes middle phalanx at proximal interphalangeal (PIP) joint of digits 2-5
o Proximal attachment: Medial humeral epicondyle
o Distal attachment: Middle phalanges of digits 2-5
What are the deep group muscles of the anterior compartment?
Flexor pollicis longus
flexor digitorum profundus
Pronator quadratus
Tell me the the following about Flexor digitorum profundus:
Innervation:
Action:
Proximal attachment:
Distal attachment:
o Innervation: Lateral part (to digits 2-3) by median nerve (anterior interosseous nerve); medial part (to digits 4-5) by ulnar nerve
o Action: Flexes distal phalanx at distal interphalangeal (DIP) joint of digits 2-5
o Proximal attachment: Anterior ulna and interosseous membrane
o Distal attachment: Distal phalanges of digits 2-5
Tell me the the following about Flexor pollicis longus:
Innervation:
Action:
Proximal attachment:
Distal attachment:
o Innervation: Median nerve (anterior interosseous nerve)
o Action: Flexes 1st digit (thumb)
o Proximal attachment: Anterior radius
o Distal attachment: Base of distal phalanx of thumb
