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Pectoralis major (A)
Morph? ect..
- position - anterior side of upper body, on chest
- morphology - fan-shaped muscle
- origin
(1) - Clavicular part: anterior surface of medial half of clavicle
(2) - Sternocostal part: anterior surface of sternum, Costal cartilages of ribs 1-6
(3) - Abdominal part: Anterior layer of rectus sheat
Insertion
(1) - Crest of greater tubercle of humerus (lat dorsi inserts inbetween pec major / teres major) - Describe the direction of fibres -
up - abdo part,
horiztonal -sternocostal part and
downwards - clavicular part - Actions - shoulder adduction / medial rotator [ Arm flexion (clavicular head), arm extension (sternocostal head)]
- functions of daily living -
- nerve supply - Lateral and medial pectoral nerves (C5-T1)
- contraction? -
Function of elbow joint?
Can change the height and length of the arm / position hand in space
[Superior rad / ulnar - Rotation allows effective positioning]
Key for functional tasks (e.g. eating, drinking)
o / I of sternocleomastiod?
Origin: Manbrium (sterno), medial portion of clavicle (cleo)
I: Mastiod process of temporal bone (Mastoid), superior nuchal line
nerve for trapezius
nerve for sternocleomastiod?
both accessory
Nerves / mucsles?
+ anterior interosseous nerve part of which nerve?
Deep branch of __ nerve?
There is the Anterior interoseous nerve which is the deep branch of the median nerve - supplies different muscles:
Abductor pollicis brevis
Opponens pollicis
Lumbricals: 1st & 2nd
± Flexor pollicis brevis (also innervated by ulnar nerve)
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Deep branch radial nerve
Supinator
Extensor carpi radialis brevis
Extensor digitorum
Extensor carpi ulnaris
Extensor pollicis longus
relevance of carrying angle? (3)
Arms need to clear pelvis in gait
Allows greater ROM in flexion
Mechanical advantage for carrying heavy objects
ulnar / radial styloid processess
-
head of ulnar is where?e
by wrist !
extension at C spine?
- semispinalis capitus / cervius
- erectus spinae (same as lumbar / thoracic spine)
- levator scapulae (retreact / elevate scapular)
- trapezius (retreact / elevate scapular)
flexino at T spine?
Flexion: Rectus abdominus / int oblique / ext oblique / psoas major
Stretch superficialis / profondus?
Flexor digitorm superficalis - extend wrist + fingers [pressure on middle finger biases superficalis] - note FDS attaches to the middle phalanges of 2-5 mets
Flexor digitorum profundus - extend wrist + fingers [ pressure on end of finger biases prfondus] note this is where FDP attaches, the distal phalanges of the fingers 2-5
ROM C spine flex extend?
Flexion / extension: 130 in total, 100 from neurtral - chin to chest
Identify two ligaments associated with the joints of Thumb or fingers.
Metacarpophalangeal joints / Carpometacarpal strengthened by: collateral ligs and Palmer ligs
You collide in to ollie palmer - snaping his finger ligaments
attachments biceps / triceps
Morphology - Fusiform, 3 Heads (long head, medial head & lateral head)
O- Infraglenoid tubercle (Long Head)
Lateral side (lateral head), of posterior surface of humerus medial side (medial head) of posterior surface of humerus
I-Olecranon process
An infared beam of light shines on glencoe which prevents lattitude from happening in a medevil castle so ole has to cancel his ticket
Action-
Extension of elbow and shoulder
Nerve - Radial
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Morphology - Fusiform, 2 Heads (short head and long head)
O- Supraglenoid tubercle (Long Head) Corocoid Process (Short head)
I-Radial Tuberosity
[+bicipital aponeurosis into deep fascia on medial part of forearm]
Super man jumps off glencoe and catches corona virus so jumps in a radioactive tube to get rid of it
Action-
Flexion of elbow and shoulder
Supinator of forearm
Nerve - Musculocutaneous
Route of musc / ax nerve?
see video
