Brachium (Outline 15) Flashcards
Tip on left or right arm?
Whatever the side of radius on is that side of the arm (radius is outside of the ulna)
Distinguish betwee radius and ulna?
The proximal end of ulna is larger than the radius
The distal end of ulna is smaller than the radius
Name for brown color part? Function
Trochlear notch
articulate with the trochlea of hummerus
Name for Blue Color. FunctioN?
Coronoid process of ulna
Fit with coronoid fossa of humerus when elbow flexed
Name for the pink color. Function?
Head of the radius
articulate surface with capitulum of humerus
Name for Green COlor. Function?
Radial Tuberosity of Ulna
Insertion of bicep tendons
Name for yellow color. Function?
Sytloid process
Name for #13 (black pen). Function?
Tuberosity of ulna
Brachialis
Name for the pencil color (right corner). Function?
Radial notch
articulation surface between head of radius and ulna
Name for #8 lower right corner. Function?
dorsal tubercle of radius
pully for extensor pollicis longus
How is brachium muscle divided? By what?
Anterior/Posterior Compartment
Deep fascia
What action does anterior brachium do? Posterior?
Flexion
Extension
What muscles are in anterior compartment?
Biceps
Brachialis
Muscles in posterior department?
3 head of triceps
anconeus
articularis cubiti
Blood supply for anterior brachium? What is it equivalent in leg?
Brachial A
femoral A
BS for post brachium? Equivalent to Leg?
brachial profunda A
femoral profunda A
NS for anterior brachium?Posterior brachium
musculocutaneous
Radial N
What division is musculocutaneous N in? radial N?
Anterior
Posterior
Origin of bicep brachii
Short head: coracoid process of scapula
Long head: Supraglenoid of scapula
Insertion of bicep brachiii
Tendons: radial tuberosity of radius
Bicep aponeurosis: deep fascia on ulna
Action of bicep brachii
Both: Supination of forearm/ flexion of elbow
Short head: flexion of shoulder
Long head: abduction of externally rotated arm
BS for bicep brachii? NS?
brachial artery
Musculocutaneous
OIANB of coracobrachialis
Tip of coracoid process of scapula
middle 1/3 of medial humerus
flexion/ adduction of shoulder
Musculocutaneous
Brachial
OIANB of brachilis
Lower half of anterior humerus
Ulnar Tuberosity/ Coranoid Process of Ulna
Flexion of Elbow
Musculocutaneous
Brachial
Origin of tricep brachii
Long head: infraglenoid tubercle of scapula
Lateral head: posterior humerus above spiral groove
Medial: below spiral groove
IANB of triceps brachii
Olecranon process of ulna
Extension of elbow/ Extension of shoulder (long head)
radial N
brachial profunda
What ligament that hold tendon of long head bicep? What part of joint it is in?
transverse ligament
glenohumeral joint
Why brachialis cant supine/propine the forearm?
because it insert on ulnar, which is fixed
When the arm is in propination and you do bicep curl, what happen?
the forearm will automatically supine
What is the workhorse in anterior brachium? Post brachium?
Brachialis
Medial head of triceps brachii
articularis cubiti function?
pull the elbow joint capsule out of the way for medial head of triceps brachii
What are branches of brachial a?
Brachial profunda
superior ulnar collateral
inferior ulnar collateral
Nutrient A
Contents of brachil profunda?
anterior or radial collateral
posterior or middle collateral
Where does the brachial profunda terminate?
at the elbow
Where does superior ulnar collateral travel? inferior ulnar collateral
posterior of elbow
anterior of elbow
What is the order of muscle of anterior brachii that musculocutaneous innervate?
Coracobrachial/ Biceps/ Brachialis
Lateral antebrachial cut
the merge nerves of biceps brachiii and brachialis
Where does the lateral antebrachial cutaneous turn into?
laterl cutaneous nerve of forearm
How does the median N travel relative to brachial artery?
Upper part of brachium it travel laterally and lower part of brachium it travel medially
Does median N travel post or anterior compartment?
anterior compartment
How does ulnar N travel relatively to brachial a?
upper brachium it travel in anterior brachium then posterior brachium as it pass by the brachial a
Does ulnar N travel medial or lateral relative to brachial artery?
medially
Where does the radial n travel? and with what artery? Pathway of its travel?
in spiral groove with brachial profunda artery
posterior(before elbow) -> lateral epicondyle(anterior) -> posterior(deep branch) and anterbrachial (superficial branch)
what are cutaneous branches of radial in brachium?
lower lateral cut
post brachial
post antebrachia
Where does the radial N travel anterior compartment? What does it innervate?
lateral epicondyle
brachioradialis/ ECRL (extensor carpi radialis longus)
What cutaneous nerve of radial N travel antebrachial?
superficial branch
What cutaneous N of radial N that travel posteriorly after elbow?
deep branch
