Arm & Forearm

Front 1

Biceps Brachii is the primary muscle of...

Back 1

Forearm Supination

Front 2

Biceps Brachii Action (3)

Back 2

*Flex the elbow @ humeroulnar joint (like carrying a bowl of soup)

*Supinate the forearm @ radioulnar joints

*Flex the shoulder @ glenohumeral joint

Front 3

Biceps Brachii Origin (2)

Back 3

Short Head:
*Coracoid process of scapula

Long Head:
*Supraglenoid tubercle of scapula

Front 4

Triceps Brachii is an antagonist to what muscle...

Back 4

Biceps Brachii

Front 5

Triceps Brachii Action (3)

Back 5

All Heads:
*Extend the elbow @ humeroulnar joint

Long Head:
*Extend the shoulder @ glenohumeral joint
*Adduct the shoulder @ g/h joint

Front 6

Triceps Brachii Origin (3)

Back 6

Long Head:
*Infraglenoid tubercle of the scapula

Lateral Head:
*Posterior surface of proximal half of the humerus

Medial Head:
*Posterior surface of distal half of the humerus

Front 7

Triceps Brachii Insertion

Back 7

Olecranon process of the ulna

Front 8

What is the elbow called?

Back 8

Olecranon process of the ulna

Front 9

Which part of the forearm bulges when you make a muscle?

Back 9

Brachioradialis

Front 10

What is the bony landmark of the wrist called?

Back 10

Extensor crease of the wrist

Front 11

What are the knuckles called?

Back 11

Metacarphalangeal joints

Front 12

The area near the thumb is called...

Back 12

Thenar eminence

Front 13

The area near the pinky is called...

Back 13

Hypothenar eminence

Front 14

What are the 3 groups of bones in the wrist and hand?

Back 14

1. carpals (8 pebble-sized bones)

2. metacarpals (5 long bones)

3. Phalanges
*Thumb has 2 phalanx bones and the fingers have 3

Front 15

Where is the Pisoform located?

Back 15

Medial to wrist

Front 16

The Biceps Brachii inserts on which bone of the forearm?

Back 16

Radial Tuberosity

Front 17

What are the tiny projections of the ulna and radius?

Back 17

Styloid process of ulna and radius

Front 18

The Brachialis attaches on what bone of the forearm?

Back 18

Ulnar tuberosity

Front 19

The Brachialis inserts on what bone of the forearm?

Back 19

Tuberosity and coranoid process of ulna

Front 20

"Knob Hill" trail is...

Back 20

A. Olecranon process and fossa

B. Epicondoyles of the humerus

C. Supracondylar ridge of the humerus

Front 21

"The Razor's Edge" follows the length of the superficial ulna where?

Back 21

A. Olecranon process

B. Shaft of ulna

C. Head of ulna

D. Styloid process of ulna

Front 22

"Pivot Pass" travels the length of the radius, the bone which creates the pivoting action of the forearm; where?

Back 22

A. Lateral epicondoyle of the humerus

B. Head of the radius

C. Shaft of the radius

D. Styloid process of the radius

Front 23

What are the 4 primary groups of forearm/hand muscles?

Back 23

1. Muscles that act primarily at the elbow

2. Muscles that move the wrist and/or fingers

3. Muscles that create the pivoting action between the radius and ulna

4. Short and long muscles that maneuver the thumb (pollicis muscles)

Front 24

Which muscles act primarily at the elbow? (2)

Back 24

1. Brachialis

2. Brachioradialis

Front 25

Which muscles move the wrist and/or fingers? (4)

Back 25

1. Extensors of wrists and fingers

2. Flexors of wrists and fingers

3. Adductors of the wrist

4. Abductors of the wrist

Front 26

Which muscles create the pivoting action between the radius and ulna? (3)

Back 26

1. Pronator teres

2. Pronator quadratus

3. Supinator

Front 27

What does an extensor do?

Back 27

Extends

Front 28

What does "Carpi" mean?

Back 28

Extends the carpals; also indicates there is a different muscle that moves the digits (ex: extensor digitorum)

Front 29

What do longus and brevis mean?

Back 29

longus- long

brevis- short

Front 30

What are the elbows movements? (2)

Back 30

1. Flexion

2. Extension

Front 31

What are the forearm's movements? (2)

Back 31

1. Supination

2. Pronation

Front 32

What are the wrist's movements? (4)

Back 32

1. Extension

2. Flexion

3. Abduction (radial deviation)

4. Adduction ( ulnar deviation)

Front 33

Radial deviation is also called...

Back 33

Abduction

Front 34

Ulnar deviation is also called...

Back 34

Adduction

Front 35

What are the movements of the hands and fingers? (2)

Back 35

1. Extension of 2-5 fingers

2. Flexion of the 2-5 fingers (cupping of fingers)

Front 36

What movement does the thumb do?

Back 36

Opposition

Front 37

Brachialis action:

Back 37

Flex the elbow @ humeroulnar joint

Front 38

Brachialis Origin:

Back 38

Distal half of the anterior surface of the humerus

Front 39

Brachialis Insertion:

Back 39

Tuberosity and coranoid process of the ulna

Front 40

What causes the Brachioradialis to become easily palpable?

Back 40

Resisted flexion of the elbow

Front 41

Brachioradialis Action (2):

Back 41

*Flex the elbow

*Assist to pronate and supinate the forearm when these movements are resisted

Front 42

Brachioradialis Origin:

Back 42

Lateral supracondylar ridge of humerus

Front 43

Brachioradialis Insertion:

Back 43

Styloid process of the radius

Front 44

Where are the flexors and extensors located?

Back 44

Flexors: anterior/medial (hairless) side

Extensors: Posterior/lateral (hairy) side

Front 45

Which 2 bones can be used as clear dividing lines between the flexors and extensors?

Back 45

Brachioradialis and Shaft of ula

Front 46

What are the 4 extensors of the wrist and fingers?

Back 46

1. Extensor Carpi Radialis Longus

2. Extensor Carpi Radialis Brevis

3. Extensor Carpi Ulnaris

4. Extensor Digitorum

Front 47

What do the 4 extensors primarily do?

Back 47

Create extension at the wrists and fingers

Front 48

Where are the extensors of the forearm located?

Back 48

between the brachioradialis and the shaft of the ulna along the forearms lateral/posterior surface

Front 49

Are the extensors smaller than the flexors?

Back 49

Yes

Front 50

Extensor Carpi Radialis Longus and Brevis Action:

Back 50

Extend the wrist @ radiocarpal joint

Front 51

Extensor Carpi Radialis Longus and Brevis Origin:

Back 51

Lateral epicondoyle of humerus

Front 52

Extensor Carpi Radialis Longus and Brevis Insertion:

Back 52

Metacarpals

Front 53

Extensor Carpi Ulnaris Action:

Back 53

Extend the wrist @ radiocarpal joint

Front 54

Extensor Carpi Ulnaris Origin:

Back 54

Lateral Epicondoyle of humerus

Front 55

Extensor Carpi Ulnaris Insertion:

Back 55

Metacarpals

Front 56

Extensor Carpi Radialis Longus and Brevis / Extensor Carpi Ulnaris A.O.I.

Back 56

A: Extend the wrist @ radiocarpal joint

O: Lateral Epicondoyles of humerus

I. Metacarpals

Front 57

Which muscles are collectively known as the "wad of 3"?

Back 57

*Brachioradialis

*Extensor Carpi Radialis Longus/Brevis

Front 58

Where are the flexors of wrist and fingers located?

Back 58

On the forearms anterior/medial surface; between brachioradialis and the ulnar shaft

Front 59

Where do most of the flexors of wrist/hand originate?

Back 59

from the common flexor tendon at the medial epicondoyle of the humerus

Front 60

Flexor carpi radialis Action:

Back 60

Flex the wrist @ radiocarpal joint

Front 61

Flexor carpi radialis Origin:

Back 61

Common flexor tendon from medial epicondoyle of humerus

Front 62

Palmaris Longus Action:

Back 62

Flex the wrist @ radiocarpal joint

Front 63

Palmaris Longus Origin:

Back 63

Common flexor tendon from medial epicondoyle of humerus

Front 64

Flexor Carpi Ulnaris Action:

Back 64

Flex the wrist @ radiocarpal joint

Front 65

Flexor Carpi Ulnaris Origin:

Back 65

Humeral Head
* Common flexor tendon from medial epicondoyle of humerus

Front 66

Flexor Digitorum Superficialis Action:

Back 66

Flex the wrist @ radiocarpal joint

Front 67

Flexor Digitorum Superficialis Origin:

Back 67

Common flexor tendon from medial epicondoyle of humerus

Front 68

Flexor Carpi Radialis, Palmaris Longus, Flexor Carpi Ulnaris, and Flexor Digitorum Superficialis all share an action and origin of what?

Back 68

A: Flex the wrist @ radiocarpal joint

B: Common flexor tendon from medial epicondoyle of humerus

Front 69

Pronator Teres is the only muscle that...

Back 69

Runs diagonal on anterior forearm

Front 70

What is a good landmark for locating the Pronator Teres?

Back 70

The distal tendon of biceps brachii

Front 71

Pronator Teres Action:

Back 71

Pronate

Front 72

Pronator Teres Origin:

Back 72

Common flexor tendon from medial epicondoyle of humerus

Front 73

Pronator Teres Insertion:

Back 73

Middle of lateral surface of the radius

Front 74

Pronator Quadratis is a muscle with how many sides?

Back 74

4

Front 75

Pronator Quadratus Action:

Back 75

Pronate the forearm

Front 76

What does the Supinator do?

Back 76

Supinates the forearm and is an antagonist to the pronator teres

Front 77

What muscle is an antagonist to the Pronator Teres?

Back 77

Supinator

Front 78

Supinator Action:

Back 78

Supinates Forearm

Front 79

How many muscles move the thumb and how many groups can they be divided into?

Back 79

8 muscles move the thumb; they can be divided into 2 groups: short and long.

Front 80

Where are the 4 short muscles that move the thumb located?

Back 80

Thenar Eminence

Front 81

Where are the 4 long muscles that move the thumb located?

Back 81

Originate along the shafts of the radius and ulna

Front 82

Where is the Hypothenar Eminence?

Back 82

Opposite the thenar eminence, along the ulnar side of the palm

Front 83

What does the Annular Ligament do?

Back 83

Wraps around the head and neck of the radius, stabilizing the proximal radius against the ulna during pronation and supination

Front 84

Where is the Ulnar Nerve (funny bone) located?

Back 84

Passes between the medial epicondoyle and olecranon process as it extends down the forearm

Front 85

What is Retinaculum?

Back 85

Thickening of fascia and holds tendons of flexors and extensors in place