CHA101L Quiz 2

Artery that occupies the space before the first rib

Artery that occupies the space between the first rib and before the inferior border of teres major m.

Artery that occupies at the inferior border of teres major m. and after

• Part of the axillary artery

• Proximal to pectoralis minor m.

• Supplies blood to the 1st and 2nd intercostal spaces

• Part of the axillary artery

• Deep to pectoralis minor m.

• Separated into 4 main branches (clavicular, acromial, deltoid, and pectoral branches)

• Part of the axillary artery

• Deep to pectoralis minor m.

• Supplies blood to serratus anterior m. at intercostal spaces 3-5

• Part of the axillary artery

• Distal to pectoralis minor m.

• Branches into the circumflex scapular artery and the thoracodorsal artery

• Part of the axillary artery, a branch from the subscapular artery

• Distal to pectoralis minor m.

• Wraps around scapula to the posterior side

• Part of the axillary artery, a branch from the subscapular artery

• Distal to pectoralis minor m.

• Supplies blood to latissimus dorsi m.

• Part of the axillary artery

• Distal to pectoralis minor m.

• Wraps around the anterior side of the surgical neck of the humerus

• Smaller than its counterpart

• Part of the axillary artery

• Distal to pectoralis minor m.

• Wraps around the posterior side of the surgical neck of the humerus

• Thicker than its counterpart and runs with the axillary nerve

• Drains blood from the upper limb as a continuation of the brachial vein

• Typically drains into the axillary vein

• Can be identified as the groove between deltoid m. and pectoralis major m.

• Arises from the lateral cord and innervates the anterior compartment of the arm

• Arises from the medial and lateral cords and innervates all but the 1 1/2 muscles of the anterior forearm

• Also innervates the thenar eminence (3 muscles) in the hand as well as the first 2 lumbricals

• Arises from the medial cord and innervates 1 1/2 muscles of the forearm (the flexor carpi ulnaris and 1/2 of the flexor digitorum profundus)

• Also innervates all but 5 intrinsic muscles of the hand

• Arises from the posterior cord and innervates the deltoid and teres minor muscles

• Runs with the posterior humeral circumflex artery

• Arises from the posterior cord and innervates the triceps

• Branches from this nerve innervate the posterior forearm muscles

• Runs with the deep brachial artery

• Formed by branches arising from the C5, C6, and C7 roots of the brachial plexus

• Innervates the serratus anterior muscle

• Branches off the C5 root of the brachial plexus

• Innervates the levator scapulae, rhomboid minor, and rhomboid major muscles

• Branch from the superior trunk of the brachial plexus

• Innervates the supraspinatus and infraspinatus muscles

• Runs through the scapular notch

• Branch from the lateral cord of the brachial plexus

• Innervates the pectoralis major muscle

• Branch from the medial cord of the brachial plexus

• Innervates the pectoralis major and minor muscles

• Kind of pierces the pectoralis minor muscle

• Branch from the medial cord of the brachial plexus

• Provides sensory innervation to the skin on the medial side of the arm

• Branch from the medial cord of the brachial plexus

• Provides sensory innervation to the skin on the medial side of the forearm

• Comes from under the medial cord

• Branch from the posterior cord of the brachial plexus

• Innervates the subscapularis muscle only

• Branch from the posterior cord of the brachial plexus

• Innervates the latissimus dorsi muscle

• Branch from the posterior cord of the brachial plexus

• Innervates the subscapularis and teres major muscles

• Can often be found with a split

• Middle subscapular nerve

• Nerve to latissimus dorsi

Label (3 things)

Label

• Origin: coracoid process of scapula

• Insertion: radial tuberosity of radius

• Main actions (on forearm): flexion of supinated forearm, supination of flexed forearm

• Innervation: musculocutaneous

• Anterior compartment of arm

• Origin: superior rim of glenoid fossa of scapula

• Insertion: radial tuberosity of radius

• Main actions (on forearm): flexion of supinated forearm, supination of flexed forearm

• Innervation: musculocutaneous

• Anterior compartment of arm

• Origin: coracoid process of scapula

• Insertion: middle of humerus (medial)

• Main actions (on arm): adduction, flexion back to anatomical

• Innervation: musculocutaneous (pierced by)

• Anterior compartment of arm

• Origin: anterior surface of humerus (middle)

• Insertion: coronoid process of ulna

• Main actions (on forearm): flexion

• Innervation: musculocutaneous

• Anterior compartment of arm

• Origin: posterior surface of humerus below radial groove

• Insertion: olecranon process of ulna

• Main actions (on forearm): extension

• Innervation: radial nerve

• Posterior compartment of arm

• Origin: posterior surface of humerus above radial groove

• Insertion: olecranon process of ulna

• Main actions (on forearm): extension

• Innervation: radial nerve

• Posterior compartment of arm

• Origin: infraglenoid tubercle of scapula

• Insertion: olecranon process of ulna

• Main actions: extension of forearm, extension of arm

• Innervation: radial nerve

• Posterior compartment of arm

• Origin: medial epicondyle of humerus, coronoid process of ulna

• Insertion: lateral side of middle radius

• Main actions (on forearm): pronation, flexion

• Innervation: median nerve

• Anterior compartment of forearm (superficial)

• Origin: medial epicondyle of humerus

• Insertion: 2nd metacarpal

• Main actions (on hand): flexion, abduction

• Innervation: median nerve

• Anterior compartment of forearm (superficial)

• Origin: medial epicondyle of humerus

• Insertion: palmar aponeurosis

• Main actions: flexion of hand, tightening of flexor aponeurosis

• Innervation: median nerve

• Anterior compartment of forearm (superficial)

• Origin: medial epicondyle of humerus

• Insertion: pisiform, hamate, 5th metacarpal

• Main actions (on hand): flexion, adduction

• Innervation: ulnar nerve

• Anterior compartment of forearm (superficial)

• Origin: medial epicondyle of humerus

• Insertion: middle phalanx of digits 2-5 (splits)

• Main actions: flexion of PIP joints, flexion of MCP joints, flexion of wrist

• Innervation: median nerve

• Anterior compartment of forearm (middle)

• Origin: radius, interosseous membrane

• Insertion: distal phalanx of digit 1

• Main actions: flexion of distal phalanx of digit 1

• Innervation: median nerve

• Anterior compartment of forearm (deep)

• Origin: anterior ulna, interosseous membrane

• Insertion: distal phalanx of digits 2-5

• Main actions: flexion of DIP joints, flexion of PIP joints, flexion of MCP joints, flexion of wrist

• Innervation: 1/2 median (lateral half), 1/2 ulnar (medial half)

• Anterior compartment of forearm (deep)

• Origin: distal ulna

• Insertion: distal radius

• Main actions (on forearm): pronation of forearm

• Innervation: median nerve

• Anterior compartment of forearm (deep)

• Paralysis of all anterior forearm muscles except FCU and medial 1/2 of FDP (thus these muscles act unopposed at the wrist)

• Ulnar deviation

• Paralysis of FCU and medial 1/2 of FDP, thus all other anterior forearm muscles act unopposed

• Radial deviation

Median nerve runs deep to it

• 9 total

• 4 from FDS

• 4 from FDP

• 1 from flexor pollicis longus

• Origin: lateral supracondylar ridge of the humerus

• Insertion: distal radius

• Main actions (on forearm): flexion, supination

• Innervation: radial nerve

• Posterior compartment of the forearm (superficial)

• Origin: lateral supracondylar ridge of humerus

• Insertion: base of 2nd metacarpal

• Main actions (on hand): extension, abduction

• Innervation: radial nerve

• Posterior compartment of the forearm (superficial)

• Origin: lateral epicondyle of humerus

• Insertion: 3rd metacarpal

• Main actions (on hand): extension, abduction

• Innervation: radial nerve

• Posterior compartment of the forearm (superficial)

• Origin: lateral epicondyle of humerus

• Insertion: extensor expansion of digits 2-5

• Main actions: extension of MCP joints, extension of wrist

• Innervation: radial nerve

• Posterior compartment of the forearm (superficial)

• Origin: lateral epicondyle of humerus

• Insertion: extensor expansion of digit 5

• Main actions: extension of MCP joint, extension of IP joints of digit 5

• Innervation: radial nerve

• Posterior compartment of the forearm (superficial)

• Origin: lateral epicondyle of humerus, ulna

• Insertion: 5th metacarpal

• Main actions (on hand): extension of hand, adduction of hand

• Innervation: radial nerve

• Posterior compartment of the forearm (superficial)

• Origin: lateral epicondyle of humerus, ulna

• Insertion: shaft of radius (proximal to pronator teres)

• Main actions: supination of forearm

• Innervation: radial nerve

• Posterior compartment of the forearm (deep)

• Origin: posterior ulna, radius, interosseous membrane

• Insertion: base of 1st metacarpal

• Main actions: abduction of digit 1, extension of digit 1 at CMC joint

• Innervation: radial nerve

• Posterior compartment of the forearm (deep)

• Origin: radius, interosseous membrane

• Insertion: proximal phalanx of digit 1

• Main actions: extension of digit 1 at MCP joint

• Innervation: radial nerve

• Posterior compartment of the forearm (deep)

• Origin: ulna, interosseous membrane

• Insertion: distal phalanx of digit 1

• Main actions: extension of digit 1 at IP joint

• Innervation: radial nerve

• Posterior compartment of the forearm (deep)

• Origin: ulna, interosseous membrane

• Insertion: extensor expansion of digit 2

• Main actions: extension of digit 2

• Innervation: radial nerve

• Posterior compartment of the forearm (deep)

• Bordered medially by the tendons of extensor pollicis longus and laterally by the tendons of extensor pollicis brevis and abductor pollicis longus

• Pain often means scaphoid fracture

• Radial artery is deep to the tendons within

• Prevents dorsal bowstringing of the extensor tendons/holds the tendons down