Noted structures on Practical Flashcards
Biceps origin, insertion, action, innervation
Origin: Short head: coracoid process
Long head: Supraglenoid tubercle
I: radial tuberosity & fascia of forearm
Inn: Musculocutaneous
Action: Long: flex arm, flex forearm, supinate forearm
short: supinate and flex forearm
Pec major origin, insertion, action, innervation
origin: medial half of clavicle, sternum
insertion: intertubercular sulcus of humerus
action: adduction, flexion, medial rotation
innervation: lateral and medial pectoral n
Deltoid origin, insertion, action, innervation
origin: lateral 1/3 clavicle, acromion, spine of scapula
insertion: deltoid tuberosity
action: abduct arm (beyond first 15), flex, medially rotate, extend, laterally rotate
innervation: axillary n
Dorsal interosseous function/innervation/info
-Abduct
-Ulnar nerve innervates
-1 inserts to 2
- 2 and 3 insert to 3
-4th inserts into 4th
(PAD/DAB) (Palmar interosseous adduct, dorsal interosseous abduct).
What does the radial nerve innervate
Triceps, aconeous, brachioradialis, extensor carpi radialis longus/brevis, supinator muscles
Trapezius origin, insertion, action, innervation
origin: medial 1/3 nuchal line, nuchal ligament, occipital protuberance, spinal process c7-12
insertion: lateral clavicle, acromion, spine of scapula
action: elevate, retract, depress
innervation: spinal accessory, c3-c4
What artery supplies the superficial palmar arch
mostly ulnar
anconeus origin, insertion, action, innervation
Origin: lateral epicondyle of humerus
I: olecranon process and proximal posterior ulna
Inn: radial n
Action: extend forearm and stabilize elbow
Supraspinatus origin, insertion, action, innervation
origin: supraspinous fossa of scapula
insertion: superior facet of greater tubrcle of humerus
action: abduction of arm up to 15
innervation: suprascapular n
Infraspinatus origin, insertion, action, innervation
origin: infraspinous fossa of scapula
insertion: middle facet of greater tubrcle of humerus
action: laterally rotate arm
innervation: suprascapular n
pronator quadratus origin, insertion, action, innervation
Origin: distal 1/4 anterior surface of ulna
Insertion: distal 1/4 anterior surface of radius
action: pronate forearm
innervation: median n
coracobrachialis origin, insertion, action, innervation
Origin: coracoid process of scapula
Insertion: middle 1/3 of medial surface of humerus
action: flex and adduct arm
innervation: musculocutaneous n 5-7
posterior cord of brachial plexus branches
axillary and radial (also has lower subscap, upper subscap, thoracodorsal)
Brachialis origin, insertion, action, innervation
Origin: distal 1/2 of anterior humerus
Insertion: coronoid process and ulnar tuberosity
action: flex forearm
innervation: musculocutaneous n and (slightly from) radial n
Serratus anterior origin, insertion, action, innervation
origin: upper 8 ribs
insertion: medial border of scapula
action: protract, upper rotation, hold scapula against thoracic wall
innervation: long thoracic n
Levator Scapulae origin, insertion, action, innervation
origin: tubrcles, transverse processes c1-c4
insertion: medial border above spine
action: elevates scapula
innervation:cervical nerves c3-c4, dorsal scapular n c5
Greater occipital n situationship functions
sensory information from skin on head
Extensor digitorum origin, insertion, action, innervation
Origin: lateral epicondyle of humerus
Insertion: middle and distal phalanx of digits 2-5
action: extend MCP and IP joints of 2-5
innervation: posterior interosseous n
Suboccipital triangle contents and boarders
borders: rectus capitis posterior major, rectis capitis obliqus superior and inferior
contents:
-dorsal rami of c1 (suboccipital n)
-Vertebral a and v
Suprascapular nerve innervates which muscles?
Supraspinatus, infraspinatus,
What are the Thenar eminence muscles?
Abductor pollicis brevis, flexor pollicis brevis, opponens pollicis.
Pectoralis minor origin, insertion, action, innervation
origin: 3rd to 5th ribs
insertion: coracoid process of scapula
action: depress and protract scapula
innervation:medial pectoral n
Deltoid origin, insertion, action, innervation
origin: lateral 1/3 clavicle, acromion, spine of scapula
insertion: deltoid tuberosity of humerus
action:abduct arm beyond 15, flex and medially rotate arm, extend and laterally rotate arm
innervation: axillary n
Coracobrachialis origin, insertion, action, innervation
Origin: coracoid process of scapula
Insertion: middle 1/3 of medial surface of humerus
action: flex and adduct arm
innervation: musculocutaneous n (c5-c7)
Carpal tunnel pathology
transverse carpal ligament is superior to median nerve, carpal tunnel space under ligament becomes inflammed
Axillary artery supplies what muscles and branches from what?
Supplies axilla, lateral limb, upper thorax
branches from posterior cord, from middle trunk
What makes up the brachial plexus M?
Musculocutaneous, median, ulnar
Where does the ulnar artery come from
Arises from medial cord and lower trunk
What does the median pectoral n innervate
Pectoralis major and minor
Teres minor origin, insertion, action, innervation
origin: lateral border of scapula
insertion:inferior facet of greater tubercle of humerus
action: laterally rotate arm
innervation:axillary n
Triangular space boarders and contents
Borders: teres minor, teres major, triceps long head
contents: circumflex scapular
Quadrangular space boarder and contents
Borders: teres minor, teres major, triceps long head, shaft of humerus.
Contents: axillary n, posterior circumflex humeral a
Rhomboid major origin, insertion, action, innervation
origin: spinal processes t2-t5
insertion: medial border of scapula (inf angle of spine)
action: retract and elevate scapula
innervation:dorsal scapular n c4-c5
Rhomboid minor origin, insertion, action, innervation
origin: nuchal ligament, spinal processes c7-t1
insertion: medial end of scapular spine
action:retract and elevate scapula
innervation:dorsal scapular n c4-c5
Lattisimus origin, insertion, action, innervation
origin: spinal processes c7-l5, thoracolumbar fascia, illiac crest, lower 3/4 of ribs
insertion: edge of bicipital groove of humerus
action: extends, adducts, medially rotates
innervation: thoracodorsal n c6-c8
Thoricodorsal n innervates what?
latissimus
Abductor pollicis brevis origin, insertion, action, innervation
origin: flexor retinaculum and tubricles of scaphoid/trapezium
insertion: lateral side of base of proximal phalanx of pollex
action: abducts pollex
innervation: recurrent branch of median n
Supinator origin, insertion, action, innervation
Origin: lateral epicondyle of humerus and supinator crest of ulna
Insertion: lateral aspect of proximal 1/3 of radius
action: supinate foream
innervation: deep branch of radial n c6/c7
Extensor carpi radialis longus origin, insertion, action, innervation
Origin: lateral supracondylar ridge of humerus
Insertion: dorsal base of 2nd metacarpal
action: extend and abduct hand
innervation:radial n
Extensor carpi radialis brevis origin, insertion, action, innervation
Origin: lateral epicondyle of humerus
Insertion: dorsal base of 3rd metacarpal
action: extend and abduct hand
innervation: deep branch of radial n
What muscle abducts up to 15 and then takes over after 15 degrees
Supraspinatus abducts up to 15, deltoid abducts after 15
What artery supplies the deep palmar arch
radial with small from ulnar
What are the contents of the suboccipital triangle
suboccipital n, vertebral a and v
anatomical snuffbox borders and contents
Lateral: abductor pollicis longus/extensor pollicis brevis
Medial: tendon of extensor pollicis longus
Floor: scaphoid, trapezium
Contents: cephalic vein, radial artery
