Upper LIMB 1 Flash Cards PDF

Preview

Summary

anatomy flash cards...

Description

Borders of axilla

apex - axillary inlet - lateral border of 1st rib, sup. border of scapula, pos. border of clavicle lateral - intertubercular groove of humerus medial - serratus anterior and thoracic wall anterior - pec major, minor and subclavius posterior - subscapularis, teres major, lat dorsi

Contents of axilla

brachial plexus axillary artery and vein biceps brachii, coracobrachialis

Sternoclavicular joint

Clavicle and sternum

Acromioclavicular joint

acromion clavicle

Glenohumeral joint

glenoid cavity and head of humerus

Coracoclavicular joint

clavicle and coracoid process

What does the proximal humerus articulate with?

scapula proximally radius and ulna distally

Proximal end of humerus

head anatomical vs surgical neck greater and lesser tubercles intertubucular groove deltoid tuberosity

Ligaments of glenohumeral joint

coracohumeral glenohumeral transverse humeral ligaments

4 rotator cuff muscles

supraspinatus infraspinatus teres minor subscapularis (ant.)

What action does the subscapularis have on the humerus?

medial rotation

Muscles that move pectoral girdle (anterior)

subclavius pectoralis minor serratus anterior trapezius

Muscles that move humerus (anterior)

subscapularis deltoid pectoralis major

Muscles that move humerus (posterior)

supraspinatus infraspinatus teres major teres minor latissimus dorsi

Muscles that move pectoral girdle (posterior)

rhomboid minor rhomboid major trapezius levator scapulae

Anterior compartment of forearm

biceps brachii (long and short head) coracobrachialis brachialis

Posterior compartment of forearm

triceps brachii (long, medial and lateral head)

Rotator cuff muscles

teres minor infraspinatus supraspinatus subscapularis

What does the brachial plexus originate from?

C5-T1 nerve roots in neck

what does the brachial plexus pass between?

anterior and middle scalene

What is the brachial plexus composed pf? The ulnar nerve receives innervation from which roots of the brachial plexus? The axillary nerve receives innervation from which roots of the brachial plexus? The Radial nerve receives innervation from which roots of the brachial plexus?

roots, trunks, divisions, cords, branches

C8 C7 C7

The musculocutaneous nerve receives innervation from which roots of the brachial plexus?

C5 and C6

The median nerve receives innervation from which roots of the brachial plexus?

C5 C6 C8

Posterior cord of brachial plexus forms?

axillary nerve - innervates deltoid and teres minor radial nerve - innervates posterior compartment muscles of arm and forearm

Medial cord of brachial plexus forms?

musculocutaneous nerve innervates flexor compartment of arm Median nerve -innervates most forearm flexors, thenar muscles Ulnar nerve - innervates some forearm flexors, hypothenar, interossei

What does the distal humerus articulate with?

scapulla proximally radius and ulna distally

Distal end of humerus composed of?

condyles - capitulum and trochlea olecranon fossa epicondyles - medial and lateral

What is superficial fascia?

layer of subcutaneous tissue

What is deep fascia?

dense, organised connective tissue layer that wraps around muscle, organs of the body

What is investing fascia?

extensions of deep fascia that surround individual muscles

3 muscles in the anterior/flexor compartment of arm

Biceps brachii superficial brachialis and coracobrachialis deep

axillary nerve

innervates deltoid and teres minor

radial nerve

innervates posterior compartment muscles of arm and forearm

musculocutaneous nerve

innervates most forearm flexors, thenar muscles

median nerve

innervates most forearm flexors, thenar muscles

ulnar nerve

innervates some forearm flexors, interossei hypothenar

Shoulder blood supply

major arterial trunks to the back, shoulder and to the front (pecs and lats) suprascapular artery

where do arteries in the upper limb originate?

subclavian artery > lat.border of rib 1- axillary artery

Right subclavian artery arises from

brachiocephalic trunk

left subclavian artery branches off

the arch of aorta

Named branches of subclavian artery

axillary - chest wall and shoulder brachial - medial side of arm radial and ulnar deep and superficial palmar arches

Veins of upper limb

cephalic basilic median cubital

the venous system of the upper limb drains deoxygenated blood from

the arm, forearm and hand

articular parts on distal end of humerus

trochlea, capitulum, coronoid process, radial fossa and olecranon fossa

main ligaments of elbow

two collateral - medial and lateral annular ligament - binds radius to ulna at proximal radio-ulnar joint

boundaries of cubital fossa

brachioradialis pronator teres horizontal line b/w medial and lateral epicondyles of humerus

contents of cubital fossa

tendon biceps brachii brachial artery median nerve

What are the 5 names of the terminal branches of brachial plexus?

musculocutaneous axillary radial median ulnae...