Upper limb Flashcards
What do the following terminology relate to/mean?
a) Brachialis
b) Ulnaris
c) Carpi
d) Digitorum
e) Pollicis
f) Superficialis
g) Profundus
a) Brachialis relates to the structures of the arm
b) Ulnaris relates to the position f the structures in the forearm
c) Carpi relates to the wrist
d) Digitorum relates to the fingers (or digits)
e) Pollicis relates to the thumb (or digits)
f) Superficialis means muscle closer to the surface
g) Profundus means the muscle is deep within the limb
Name the bony structures of the shoulder
- Clavicle
- Acromion process
- Humerus
- Glenoid fossa
- Intertubercular groove - found between the greater and lesser tubercule
- Posterior aspect of scapula - spine of scapula, medial and lateral border of scapula, inferior angle, superior angle
- Spine of scapula divides into infraspinous fssa and suprsaspinous fossa
- Anterior aspect of scapula - subscapular fossa, coracoid process
Label the bony structures of the anterior view of the shoulder
Label the bony structures of the posterior view of the shoulder
Label the bony structures of the humerus
Name the muscles of the shoulder girdle
- Trapezius
- Rhomboids (major and minor)
- Levator sccapulae
- Serratus anterior
- Pectoralis minor
Describe the proximal and distal attachment, nerve supply and action of the following shoulder girdle muscles
a) Trapezius
b) Rhomboid (major and minor)
c) Levator scapulae
d) Serratus anterior
e) Pectoralis minor
a) Trapezius (Large triangular muscle covering back)
- Attachment - attaches posteriouly to the external occiptal protuberence (base of skull) and goes on to attach to the lateral 1/3 clavicle, acromial process, lateral 1/3 spine of the scapula (superior aspect)
- Nerve supply - spinal accessory
- Actions - lateral rotation of scapula in abduction beyond 90 degrees
b) Rhomboids (minor and major)
- Attachment - attaches to spinal processes C7-T5 and to medial border of scapula (deep to scapula)
- Nerve supply - Dorsal scpaula (C4,5)
- Action - Scapula retraction and medial rotation
c) Levator scapulae - thin muscle
- Attachment - Attaches to cervicle vertebrae and then to superior angle of scapula
- Nerve supply- Cervicle nerve (C3,4,5)
- Action - Scapula elevation
d) Serratus anterior
- Attachment - Attaches from medial border of scapula to ribs 1-8 in finger-like projections
- Nerve supply - Long thoracic
- Action - Scapula protraction and lateral rotation
e) Pectoralis minor - small muscle lying deep to spec. major
- Attachment - Attaches from 1-4/2-5 to coracoid process of scapula
- Nerve supply - Medial pectoral
- Action - Anchors scapula by pulling it against chest wall
Label the shoulder girdle muscles
Name the muscles of the shoulder joint
- Deltoid
- Pectoralis major (sternal head and clavicular head)
- Latissimus dorsi
- Teres major
- Rotator cuff muscles - supraspinatus, infraspinatos, teres minor, sub-scapularis
- Coraco-brachialis
- Triceps brachii and biceps brachii
Describe the proximal and distal attachment, nerve supply and action of the following msucles in the shoulder joint:
a) Deltoid
b) Pectoralis major
c) Latissimus dorsi
d) Teres major
a) Deltoid - Triangular shape
- Attachment - Lateral 1/3 clavicle, acromial process, laeral 1/3 spine of scapula to deltoid tubercule on lateral aspect of humerus
- Nerve supply - Axillary
- Action - Shoulder abduction 20-90 degrees
b) Pectoralis major
- Attachment - sternal head (sternum to lateral lip of intertubercular groove) and clavicular head (clavicle to lateral lip of intertubercular groove)
- Nerve supply - medial and lateral pectoral lnerves
- Action - Shoulder flexion, medial rotation
c) Latissimus dorsi
- Attachment - spinous processes, thoracocolumbar fascia of back, iliac crest to floor of intertubecular groove
- Nerve supply - Thoracodorsal
- Action - shoulder extension, medial rotation
d) Teres major
- Attachment - inferior angle of scapula to medial lipof intertubecular groove
- Nerve suuply - lower subscapular
- Action - shoulder extension, medial rotation
Rotator cuff muscles are part of the muscles in the shoulder joint. Describe the proximal and lateral attachment, nerve supply and action of the rotator cuff muscles
1.Supra-spinatus
- Attachment - supraspinatus fossa to superior aspect of greater tubercule of humerus
- Nerve supply - Suprascapular
- Action - initiates shoulder abduction
- Infra-spinatus
- Attachment - infraspinatous fossa to posterior aspect of greater tubercule of humerus
- Nerve supply - Suprascapular
- Action - Lateral rotation of shoulder
- Teres minor
- Attachment - inferior border of scapula to posterior aspect of greater tubercule of humerus
- Nerve supply - Suprascapular
- Action - lateral rotation of shoulder
- Sub-scapularis
- Attachment - Subscapular fossa to anterior aspect of lesser tubercle of humerus
- Nerve supply - Upper and lower subscapular
- Action - medial rotation of shoulder
Name the muscles in the arm
- Triceps brachii
- Biceps brachii
- Brachialis
- Anconeus
- Brachioradialis will fex the eblow in the mid-prone position but is counted in the posterior forearm compartment
Describe the proximal and distal attachment, nerve supply and action of the following muscles in the arm:
a) Triceps brachii
b) Biceps brachii
c) Brachialis
d) Anconeus
a) Triceps brachii - 3 heads (medial, lateral and long head)
- Attachment - posterior aspect of humerus (medial and lateral heads), infraglenoid tubercule (scapula) to olecranon process
- Nerve supply - Radial
- Action - Elbow flexion
b) Biceps brachii - long head and short head
- Attachment - supra glenoid tubercule (long head) and coracoid process (short head) to bicipital tubersotiy of radias ulna via aponeurosis
- Nerve supply - musculocutaneous
- Action - Elbow flexion, supination of forearm + will also help to prevent superior dislocation of humerus
c) Brachialis
- Attachment - anterior aspect humerus to coranoid process
- Nerve cupply - musculocutaneous
- Action - Elbow flexion
d) Anconeus
- Attachment - lateral epicondyle of humerus to olecranon process
- Nerve supply - Radial
- Action - Abducts ulnar during pronation of forearm but muscle is not important
Label the structures of the rotator cuff muscles
Label the structures of the shoulder joint
Label the structures in the arm
Name the bones of the elbow
- Spiral (radial) groove
- Midal and lateral epicondyles
- Trochlear (articulate with head of ulna)
- Capitulum (articulates with head of radius)
- Coronoid prcess
- Olecranon process
- Head of radius
- Neck of radius
- Radial notch
- Bicipital tuberosity
Label the bony structures of the elbow
Name the bones and joint of the wrist and hand
- Radius
- Ulna
- (Lister’s) dorsal tubercule
- Styloid processes
- Carpal bones: divided into proximal and distal row
- Distal row - Trapezium (under thumb), trapezoid, capitate, hamate
- Proximal row - Triquetrium, pisiform
- Lunate
- Scaphoid
- Metacarpals
- Phalanges
- Carpo-metacarpal joints- between carpals and metacarpals
- Metacarpo-phalangeal joints – between metacarpals and phalanges
- Inter-phalangeal joints
Thumb = inter-phalangeal joint (only 1 inter-phalangeal joint)
Digits 2-5 = proximal inter-phalangeal joint and distal inter-phalangeal joint (2 inter-phalangeal joints)
Label the bones of the hand and wrist
Name the ligaments that hold the acromio-clavicular oint and sterno-clavicular joint and desscribe their role
- Coraco-clavicular ligament - prevents clavicle from lifting away from coracoid process
- Coraco-acromial ligament - prevents upward dislocation of head of humerus
- Acromio-clavicular ligament - prvenes acromion process and clavicle from moving apart
Describe the role of the subacromial bursa
Reduces friction between supraspinatus and acromion process and protects the tendon of supraspinatus
Name the muscles in the anterior forearm
Superficial muscles
- Carpi muscles: flexor carpi radialis and flexor carpi ulnaris
- Palmaris longus
- Flexor digitorum superficialis
- Pronator teres
Deep muscles
- Flexor digitorum profundus
- Flexor pollicis longus
- Pronator quadratus