Upper Limb I

Question 0

Action of the anterior muscles

Answer 0

Flexion

Question 1

Name the joints of the hand from distal to proximal

Answer 1

Distal interphalangeal joint (IP joint)
Proximal interphalangeal joint
Metacarpophalangeal joint

Question 2

2 heads of pectoralis major m of anterior side

Answer 2

Clavicular & sternocostal heads

Question 3

Actions of pectoralis major m (anterior)

Answer 3

Flexes, adducts (add back to body), medially rotate

Question 4

Innervation of pectoralis MAJOR

Answer 4

Lateral & medial pectoral nerve

Question 5

Name the 3 axioappendicular m

Answer 5

Pectoralis major m
Pectoralis minor m
Serratus anterior m

Question 6

Attachments of pectoralis minor m

Answer 6

Ribs 3 to 5

Coracoid process of scapula (you can only feel it on the anterior side)

Question 7

Innervation of pectoralis MINOR m

Answer 7

Medial pectoral nerve

Question 8

Serratus anterior m actions

Answer 8

Protract scapula

Question 9

Innervation of Serratus anterior m (attached to ribs 1-8 and medial border and scapula)

Answer 9

Long thoracic nerve (it’s along muscle, attached to many ribs!)

Question 10

Scapulohumeral m (6)

Answer 10

Deltoid
SITS:
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
-------
Teres major m

Question 11

Muscles of the rotator cuff of scapulohumeral m

Answer 11

SITS
Supraspinatus (superior to spine of scapula)
Infraspinatus m
Teres MINOR (can’t stand alone, must be on its own)
Subscapularis

Question 12

Name the 3 compartments of the arm by fascia (same layer, tho)

Answer 12

Brachial fascia
Antebrachial fascia (forearm)
Palmar fascia/palmar aponeurosis

Question 13

What so medial & lateral inter muscular septa of brachial fascia do?

Answer 13

Divide arm into anterior (flexor) and posterior (extensor) component

Question 14

3 m of anterior/flexor compartment of arm

Answer 14

Biceps brachii
Brachialis
Coracobrachialis

Question 15

Supinator (turn palms up to hold bowls of soup) of anterior compartment of arm

Answer 15

Biceps brachii

Question 16

Primary FOREarm flexor in anterior arm

Answer 16

Brachialis m

It is kind of the predecessor to Brachioradialis, which is a flexor and this breaks 2 rules!

Question 17

Attachments of coracobrachialis m

Answer 17

Coracoid process to humerus

Question 18

Name the ONE muscle of posterior compartment of arm

Answer 18

Triceps brachii (work out ur tris!)

Question 19

Innervation of posterior compartment of arm

Answer 19

Radial nerve - posterior *

Question 20

– – is the triangular depression on anterior of elbow

Answer 20

Cubital fossa (hollow/depressed area)

Question 21

Medial boundary of Cubital fossa

Answer 21

Pronator Teres m

Question 22

Lateral boundary of Cubital fossa

Answer 22

Brachioradialis m

Question 23

Contents of Cubital fossa from lateral –> medial

Median sized Cubs need a TENDer “brake”/break!

Answer 23

TAN:
Biceps brachii Tendon
Brachial Artery
Median Nerve

Question 24

-- & -- in the ANTERIOR compartment of the forearm

Answer 24

Flexors & pronators (palms facing down, no soup)

Question 25

Innervation of forearm muscles

Answer 25

6. 5 m Innervated by median n | 1. 5 m Innervated by ulnar n

Question 26

Name the 5 superficial m Flexors of the forearm

Answer 26

``` Pronator Teres m Flexor Carpi radialis m Palmaris longus m Flexor digitorum superficialis *all 4 median n* Flexor Carpi ULNARIS m *ulnar n* ```

Question 27

Attachment of the superficial flexor m of forearm

Answer 27

Proximal attachment: medial epicondyle of humerus

Question 28

The one superficial forearm m that does NOT cross the wrist

Answer 28

Pronator Teres m

Question 29

Attachments of Pronator Teres

Answer 29

Lateral surface of radius (by thumb)

Question 30

Actions of flexor CARPI (attached to base of 2nd metacarpal) radialis m

Answer 30

Flexes | ABducts (away from midline) hand at wrist

Question 31

Palmaris longus m attachment (think Palm)

Answer 31

Distal 1/2 of flexor retinaculum

Question 32

Actions of flexor Carpi ULNARIS (medial in supination)

Answer 32

Flexes | ADDucts hand at wrist

Question 33

Brachioradialis m is a flexor. What 2 rules are broken

Answer 33

- Innervated by radial n that only supplies extensor sand supinators (extend a helping hand to give soup!) - found in posterior compartment even tho all Flexors in anterior

Question 34

Attachments of flexor digitorum superficialis m

Answer 34

Proximal: medial epicondyle, radius, ulna Distal: middle phalanges of 4 fingers

Question 35

Difference bw superficial and deep Flexors of forearm

Answer 35

Deep layer of Flexors do NOT cross the elbow

Question 36

3 m of the deep layer of Flexors

Answer 36

``` Flexor pollicus longus (thumb) Pronator Quadratus (does not cross wrist) Flexor digitorum profundus ```

Question 37

What part of what m of deep layer of Flexors Innervated by ulnar n?

Answer 37

Distal 4 & 5 phalanges (closest to ulna)

Question 38

Diff bw flexor digitorum profundus m (deep) and flexor digitorum superficialis m?

Answer 38

FDP (deep) flexes in slow action and DISTAL phalanges | FDS flexes middle phalanges, all about speed

Question 39

Posterior compartment of forearm contains -- & --

Answer 39

Extensors and supinators | Extend a hand to give soup

Question 40

Muscles that extend the hand (3)

Answer 40

Extensor Carpi radialis longus - s Extensor Carpi radialis brevis - s Extensor Carpi ULNARIS m - s

Question 41

3 m that extend the medial digits

Answer 41

Extensor digitorum m Extensor indices m Extensor digiti minimi m *all have digits in them*

Question 42

M that extend/abduct the THUMB

Answer 42

Abductor pollicis longus m Extensor pollicis brevis m Extensor pollicis longus m *anything with the thumb is DEEP*

Question 43

Functionally, the Brachioradialis is a -- even tho it is located in the posterior/extensor compartment

Answer 43

Flexor

Question 44

The -- m helps the triceps mm (posterior!) extend the forearm and stabilizes the elbow

Answer 44

Anconeus

Question 45

The -- or -- process of the scapula comes off of the spine

Answer 45

Acromion, acromial process | *accrue means to add on*

Question 46

The -- notch is at the bottom of the coracoid process (more anterior than Acromion, not attached to spine)

Answer 46

Suprascapular

Question 47

The rotator cuff muscle most easily injured

Answer 47

Supraspinatus

Question 48

Medial and lateral borders of the anatomical snuff box

Answer 48

Lateral: tendons of abductor pollicis longus and extensor pollicis brevis Medial: tendon of extensor pollicis longus

Question 49

Major content of anatomical snuffbox

Answer 49

Radial artery | *to those 傻瓜, the "snuff" be rad*

Question 50

Actions of thenar and Hypothenar compartment of hand (hypo is small!)

Answer 50

Thenar - abduct, flex, oppose the THUMB | Hypothenar - abduct, flex, oppose digit 5 (hence smaller)

Question 51

Extensor INDICes m extends to -- finger

Answer 51

Index/pointer

Question 52

The Posterior compartment of the arm is Innervated by the -- nerve and contains -- & --

Answer 52

*the posterior b rad bc it extends a helping hand to give soup* Radial nerve Extensors & supinators

Question 53

-- nerve does NOT Innervate any m in the hand

Answer 53

Radial n