1Who is the faculty member for KINES 259?
Michael Williams Ph.D.
2What are the three fossae of the humerus?
Radial fossa, coronoid fossa, and olecranon fossa
3Which fossae of the humerus are located anteriorly?
Radial fossa and coronoid fossa
4Which fossa of the humerus is located posteriorly?
Olecranon fossa
5What type of joint is the glenohumeral joint?
- Synovial: ball-and-socket [Diarthrosis] lined with hyaline cartilage
- Synovial: hinge
- Synovial: pivot
- Synovial: modified hinge
6What type of joint is the humeroulnar joint?
- Synovial: hinge [Diarthrosis] lined with hyaline cartilage
- Synovial: ball-and-socket
- Synovial: pivot
- Synovial: plane
7What are the movements at the humeroulnar joint?
Flexion-Extension
8What type of joint is the humeroradial joint?
- Synovial: modified hinge [Diarthrosis] lined with hyaline cartilage
- Synovial: hinge
- Synovial: pivot
- Synovial: ball-and-socket
9What type of joint is the proximal radioulnar joint?
- Synovial: pivot [Diarthrosis] lined with hyaline cartilage
- Synovial: hinge
- Synovial: ball-and-socket
- Synovial: plane
10What are the movements at the proximal radioulnar joint?
Pronation-Supination
11What structure forms a band encircling 80% of the radial head and acts as an important stabilizer of the proximal radioulnar joint?
Annular ligament
12What muscles are in the anterior compartment of the brachium?
- Coracobrachialis
- Biceps brachii
- Brachialis
- Triceps brachii
13What nerve innervates the anterior compartment of the brachium?
Musculocutaneous nerve
14What main artery supplies the anterior compartment of the brachium?
Brachial artery
15What muscles are in the posterior compartment of the brachium?
- Triceps brachii
- Anconeus
- Biceps brachii
- Brachialis
16What nerve innervates the posterior compartment of the brachium?
Radial nerve
17What artery supplies the posterior compartment of the brachium?
Profunda brachii (aka deep branch of brachial artery)
18What is the origin of the short head of the biceps brachii?
Coracoid process of scapula (tip)
19What is the origin of the long head of the biceps brachii?
Supraglenoid tubercle of scapula, glenoid labrum (superior aspect), and GH capsule (superior aspect)
20What are the insertion sites of the biceps brachii?
Bicipital tuberosity of radius and bicipital aponeurosis
21What percentage of fibers insert into the bicipital aponeurosis for the biceps brachii?
~30% of fibres
22What clinical condition stands for Superior Labrum Anterior-to-Posterior?
SLAP lesion
23What are the actions of the biceps brachii?
Flexion at humeroulnar joint, supination at radioulnar joints, and assists in flexion at the GH joint
24Which nerve innervates the biceps brachii?
Musculocutaneous nerve (C5-7)
25Which nerve pierces the coracobrachialis muscle?
Musculocutaneous nerve
26What are the blood supplies of the biceps brachii?
Brachial artery and radial recurrent artery
27What is the origin of the brachialis muscle?
Distal 1/2 of anterior surface of humerus
28What are the insertion sites of the brachialis muscle?
Coronoid process of ulna and ulnar tuberosity
29What is the action of the brachialis muscle?
Flexion at humeroulnar joint
30What is the innervation of the brachialis muscle?
Musculocutaneous nerve (C5-7)
31What are the blood supplies of the brachialis muscle?
Brachial artery and radial recurrent artery
32What is the origin of the brachioradialis muscle?
Lateral supracondylar ridge of the humerus and lateral intermuscular septum
33What is the insertion of the brachioradialis muscle?
Styloid process of the radius
34What are the actions of the brachioradialis muscle?
Elbow flexion and rotates forearm to the mid-prone position
35What is the innervation of the brachioradialis muscle?
Radial nerve (C5-8)
36What is the blood supply of the brachioradialis muscle?
Radial recurrent artery
37What is the origin of the long head of the triceps brachii?
Infraglenoid tubercle of scapula
38What is the origin of the lateral head of the triceps brachii?
Posterior surface of humerus, superior to the radial groove
39What is the origin of the medial head of the triceps brachii?
Posterior surface of humerus, inferior to the radial groove
40What is the insertion of the triceps brachii?
Olecranon process of the ulna
41What are the actions of the triceps brachii?
Extension of ulna at humeroulnar joint
42What is the innervation of the triceps brachii?
Radial nerve (C5-8)
43What is the blood supply of the triceps brachii?
Profunda brachii (deep branch)
44What is the origin of the anconeus muscle?
Lateral epicondyle of humerus
45What is the insertion of the anconeus muscle?
Olecranon
46What is the action of the anconeus muscle?
Extension of ulna at humeroulnar joint
47What is the innervation of the anconeus muscle?
Radial nerve (C5-8)
48What is the blood supply of the anconeus muscle?
Radial collateral artery
49From which roots and cord does the musculocutaneous nerve originate?
C5-7 from the lateral cord of the brachial plexus
50What is the sensory innervation of the brachium by the musculocutaneous nerve?
None
51What nerve provides cutaneous sensory innervation to the lateral forearm (mainly volar surface)?
Lateral antebrachial cutaneous nerve
52What muscles receive motor innervation from the musculocutaneous nerve?
- Coracobrachialis
- Biceps brachii
- Brachialis
- Triceps brachii
53From which roots and cord does the radial nerve originate?
C5-8 (T1) from the posterior cord of the brachial plexus
54What is the sensory innervation of the radial nerve?
Posterolateral arm and posterior forearm, posterior digits 1, 2, and lateral half of 3rd digit (up to DIPs) via superficial branch
55What muscles in the brachium receive motor innervation from the radial nerve?
- Triceps brachii
- Anconeus
- Biceps brachii
- Brachialis
56What are the superior, lateral, inferior, and medial borders of the quadrangular space?
- Superior: teres minor
- Lateral: humerus
- Inferior: teres major
- Medial: triceps brachii - long head
57What are the contents of the quadrangular space?
- Axillary nerve
- Posterior circumflex humeral artery
- Radial nerve
- Profunda brachii
58What are the lateral, inferior, and medial borders of the triangular hiatus/interval?
- Lateral: humerus
- Inferior: teres major
- Medial: triceps brachii - long head
- Superior: teres minor
59What are the contents of the triangular hiatus/interval?
- Radial nerve
- Profunda brachii
- Axillary nerve
- Posterior circumflex humeral artery
60What are the contents of the suprascapular notch?
Suprascapular nerve (under ligament) and suprascapular artery (over ligament)
61What structures pass through the spinoglenoid notch?
Suprascapular nerve and suprascapular artery
62What nerve and artery are found at the medial/axillary border?
Dorsal scapular nerve and dorsal scapular artery
63What artery is contained in the triangular space?
Circumflex scapular artery