Exam 1 Flashcards
Upward rotation of the scapula occurs in what movements?
Flexion, abduction of the arm
What type joint is the proximal humeroulnar jt
Hingle type synovial jt
Flex/Ex
What is contained in the deltopectoral triangle
Cephalic vein, coracoid process
What is the most abundant type of articular cartilage?
Hyaline
Subscapularis
Orgin/insertion
Nerve
Origin: Subscapular fossa of scapula
Insertion: Lesser tubercle of humerus
Nerve: Upper and low subscapular nerve (C5, C6)
What three muscle movements help stabilize the GH joint?
Elevation, upward rotation and depression
Purpose of the coronoid fossa (anterior)
Receives coronoid process of the ulna during flexion
Teres minor
Origin/insertion
Nerve
Origin: Superior 2/3 of dorsal surface of lateral border of scapula
Insertion: Inferior facet of the Greater tubercle of humerus
Nerve: Axillary (C5, C6)
Latissimus Dorsi
Origin/Insertion
Nerve
Origin: T7-T12, L1-L5, Posterior sacrum, Posterior iliac crest, lowest 3-4 ribs, inferior angle of scapula all via thoracolumbar fascia
Insertion: Medial lip of bicipital groove
Nerve: Thoracodorsal n (C6, C7, C8)
What is the purpose of the CCL
Limit upward and lateral displacement of medial end of clavicle
Downward rotation of the scapula occurs in what movements?
Extension, hyperextension and adduction of the arm?
What forms the deltopectoral triangle?
Superior: clavicle
Medial: Pec. major
Lateral: deltoid
Sternal end importance
Posterior: protection of brachial plexus and subclavian BVs
Inferior: Subclavian groove, costal tuberosity (CCL)
What type of cartilage found in the SC jt
Fibrocartilage
What forms the lateral wall of the axilla
Narrow wall, intertubercular groove
Subclavius
Origin/Insertion
Nerve
Origin: Ribs 3-5
Insertion: Middle 1/3 of inferior border of clavicle
Nerve: N to Subclavius (C5, C6)
Trapezius
Origin/Insertion
Nerve
Origin: External occipital protuberance, nuchal ligament, C7, T1-T5, T6-T12
Insertion: Lateral 1/3 of clavicle, acromion process, spine of scapula, root of the spine of the scapula
Nerve: Spinal accessory (XI) and (C3, C4)
Deltoid
Origin/Insertion
Nerve
Origin: Lateral 1/3 of clavicle, Acromion process, Spine of scapula
Insertion: Deltoid tuberosity of humerus
Nerve: Axillary (C5, C6)
What is contained in the axilla
cords and branches of the brachial plexus
What forms the anterior wall of the axilla
Clavicle, pec muscles
Triceps Brachii
Origin/Insertion
Nerve
Origin: Infraglenoid tubercle, Proximal 1/3 and distal 2/3 of posterior humerus
Insertion: Olecranon process of ulna
Nerve: Radial Nerve (C6, C7, C8)
What type joint is the humeroradial jt
Gliding/planar type synovial jt
Pronation/supination, flex/ex
Coracobrachialis
Origin/Insertion
Nerve
Origin: Coracoid process
Insertion: Middle 1/3 of medal surface of humerus
Nerve: Musculocutaneous (C5, C6, C7)
Pec major
Origin/Insertion
Nerve
Origin: Medial 1/2 of clavicle, Sternum, costal cartilage ribs 1-7, EAO aponeurosis
Insertion: Lateral lip of bicipital groove
Nerve: Medial and lateral pectoral N (C5-T1)
What is contained in the quadrangular space?
axillary nerve, posterior humeral circumflex arter
What forms the posterior wall of the axilla
Scapula, Subscapularis muscle, teres major and lat muscles
What muscles are part of the bicipital groove
“Lady between 2 majors”
Medial: Teres major
Floor: lats
Lateral: Pec major
Purpose of the radial fossa (anterior)
Receives head of radius during flexion
What is the purpose of the anterior/posterior SC ligaments
limit upward and lateral displacement of the medial end of the clavicle
Biceps Brachii
Origin/Insertion
Nerve
Origin: Supraglenoid tubercle of scapula, Coracoid process of scapula
Insertion: Radial tuberosity, bicipital aponeurosis
Nerve: Musculocutaneous (C5, C6)
Purpose of the olecranon fossa (posterior)
Receives olecranon process of ulna during extension
What forms the quadrangular space
Superior: teres minor
Inferior: teres major
medial: LH-TB
Lateral: shaft of humerus and joint capsule
What type of joint is the AC joint
Planar type synovial joint
Supraspinatus
Origin/Insertion
Nerve
Origin: Medial 2/3 of supraspinatus fossa of humerus
Insertion: Superior facet of Greater tubercle of humerus
Nerve: Suprascapular (C5, C6)
What forms the base of the axilla
Fascia and skin of concave axilla
What kind of joint is the SC joint
Saddle type synovial joint
Infraspinatus
Orgin/Insertion
Nerve
Origin: Medial 2/3 of infraspinatus fossa of scapula
Insertion: Middle facet of Greater tubercle of humerus
Nerve: Suprascapular nerve (C5, C6)
What forms the apex of the walls of the axilla
Anterior: Clavicle
Posterior: Scapula
Medial: 1st rib
Muscular support of joint capsule
Above: supraspinatus tendon Below: Tendon LH-TB Anterior: Subscapularis tendon Posterio: infraspinatus and teres minor tendon Inside: Tendon LH-BB Whole: Deltoid
What forms the medial wall of the axilla
Ribs, intercostal muscles, serratus anterior muscles
What is the purpose of the interclavicular ligament
Prevent lateral displacement of medial end of the clavicle
Levator Scapulae
Origin/Insertion
Nerve
Origin: TPs C1-C4
Insertion: Medial border of scapula between superior angle and root of the spine of the scapula
Nerve: Dorsal scapular (C3, C4, C5)
Pectoralis minor
Origin/Insertion
Nerve
Origin: Ribs 3-5
Insertion: Coracoid process
Nerve: Medial and lateral pectoral (C5-T1)
Rhomboids major and minor
Origin/Insertion
Nerve
Origin: C7, T1; T2-T5
Insertion: root at spine of scapula, medial border between root at spine of scapula to inferior angle
Nerve: Dorsal scapular (C4, C5)
Serratus anterior
Origin/Insertion
Nerve
Origin: Ribs 1-9
Insertion: Entire medial border of anterior surface of scapula
Nerve: Long thoracic (C5, C6, C7)
Teres major
Origin/Insertion
Nerve
Origin: Inferior 1/3 of dorsal surface of inferior angle and Inferolateral border of the scapula
Insertion: Medial lip of bicipital groove of scapula
Nerve: Lower subscapular (C5, C6, C7)
Pt comes in with lack of sensation in the dorsum of the foot, not including the space between the 1st and 2nd toes. Which nerve is injured?
Superficial fibular nerve
What nerve supplies the space between the 1st and 2nd toes?
Deep fibular nerve
