Pet3323 Lab Exam 1 - Arm Muscles

Front 1

Action of Pronator Teres

Back 1

Pronates Forearm

Front 2

Action of Flexor Carpi Radialis (2)

Back 2

Flexes the wrist
Abducts hand

Front 3

Action of Palmaris Longus (2)

Back 3

Weak Wrist Flexor
Tenses skin of palm during hand movements

Front 4

Action of Flexor Carpi Ulnaris (2)

Back 4

Flexes wrist
Adducts hand

Front 5

Action of Flexor Digitorum Superficialis (2)

Back 5

Flexes wrist
Flexes middle phalanges of fingers

Front 6

Action of Extensor Carpi Radialis Longus (2)

Back 6

Extends Wrist
Abducts Wrist

Front 7

Action of Extensor Carpi Radialis Brevis (2)

Back 7

Extends Wrist
Abducts Wrist

Front 8

Action of Extensor Digitorum (2)

Back 8

Extends Wrist
Abducts Wrist

Front 9

Action of Extensor Carpi Ulnaris (2)

Back 9

Extends Wrist
ADDUCTS Wrist

Front 10

Action of Supinator

Back 10

Assists biceps brachii to Supinate forearm

Front 11

Action of Abductor Pollicis Longus (2)

Back 11

Abducts and extends thumb
Abducts Wrist

Front 12

Action of Extensor Pollicis Brevis and Longus

Back 12

Extends thumb

Front 13

Action of Extensor Digiti Minimi

Back 13

Extends finger 5

Front 14

Action of Flexor Pollicis Longus

Back 14

Flexes distal phalanx of thumb

Front 15

Action of Flexor Digitorum Profundus (2)

Back 15

Slow-acting flexor of fingers.
Flexes distal interphalangeal joints.

Front 16

Action of Pronator Quadratus (2)

Back 16

Prime mover of forearm pronation.
Helps hold ulna and radius together.

Front 17

Action of Abductor Pollicis Brevis

Back 17

Abducts thumb at carpometacarpal joint

Front 18

Action of Flexor Pollicis Brevis

Back 18

Flexes thumb at carpometacarpal and metacarpophalangeal joints.

Front 19

Action of Adductor Pollicis (2)

Back 19

Adducts thumb
Helps oppose thumb

Front 20

Action of Opponens Pollicis

Back 20

Opposition of thumb

Front 21

Action of Abductor Digiti Minimi

Back 21

Abducts little finger at metacarpophalangeal Joint

Front 22

Action of Flexor Digiti Minimi Brevis

Back 22

Flexes little finger at metacarpophalangeal joint

Front 23

Action of Opponens Digiti Minimi

Back 23

Helps in opposition of thumb

Front 24

Action of Dorsal Interossei

Back 24

Abducts (diverges) fingers

Front 25

Action of Palmar Interossei

Back 25

Adducts Fingers

Front 26

Origin and Insertion of Pronator Teres

Back 26

Origin: Medial Epicondyle of humerus
Insertion: Lateral Radius

Front 27

Origin and Insertion of Flexor Carpi Radialis

Back 27

Origin: Medial Epicondyle of humerus.

Insertion: Base of 2nd and 3rd metacarpals.

Front 28

Origin and Insertion of Palmaris Longus

Back 28

Origin: Medial Epicondyle of humerus.

Insertion: Palmar Aponeurosis.

Front 29

Origin (3) and Insertion (2) of Flexor Carpi Ulnaris

Back 29

Origin: Medial Epicondyle of humerus, Olecranon Process, and Posterior Ulna.

Insertion: Pisiform and Hamate bones, Base of 5th metacarpal.

Front 30

Origin (3) and Insertion of Flexor Digitorum Superficialis

Back 30

Origin: Medial Epicondyle of Humerus, Coranoid Process of Ulna, Shaft of Radius.

Insertion: MIddle phalanges of fingers 2-5.

Front 31

Origin and Insertion of Extensor Carpi Radialis Longus

Back 31

Origin: Lateral Supracondylar ridge of humerus.

Insertion: Base of 2nd metacarpal.

Front 32

Origin and Insertion of Extensor Carpi Radialis Brevis

Back 32

Origin: Lateral Epicondyle of Humerus.

Insertion: Base of 3rd metacarpal.

Front 33

Origin and Insertion of Extensor Digitorum

Back 33

Origin: Lateral Epicondyle of Humerus.

Insertion: Distal Phalanges of fingers 2-4.

Front 34

Origin (2) and Insertion of Extensor Carpi Ulnaris

Back 34

Origin: Lateral Epicondyle of Humerus, and Posterior Ulna.

Insertion: Base of 5th Metacarpal.

Front 35

Origin (2) and Insertion of Supinator

Back 35

Origin: Lateral Epicondyle of Humerus, Proximal Ulna.

Insertion: Proximal end of Radius.

Front 36

Origin (3) and Insertion (2) for Abductor Pollicis Longus

Back 36

Origin: Posterior surface of radius and ulna, Interosseous Membrane.

Insertion: Base of 1st Metacarpal and Trapezium.

Front 37

Origin (3) and Insertion (2) for Extensor Pollicis Brevis and Longus

Back 37

Origin: Dorsal shaft of Radius and Ulna, Interosseos Membrane.

Insertion: Base of proximal (brevis) phalanx of thumb, Base of distal (longus) phalanx of thumb.

Front 38

Origin and Insertion for Extensor Digiti Minimi

Back 38

Origin: Lateral Expicondyle of Humerus.

Insertion: Distal Phalanx of finger 5

Front 39

Origin (2) and Insertion for Flexor Pollicis Longus

Back 39

Origin: Anterior Radius, Interosseous membrane

Insertion: Distal phalanx of thumb.

Front 40

Origin (2) and Insertion for Flexor Digitorum Profundus

Back 40

Origin: Coranoid process of ulna, Interosseous membrane.

Insertion: Distal phalanges of fingers 2-5.

Front 41

Origin and Insertion for Pronator Quadratus

Back 41

Origin: Distal surface of anterior Ulna

Insertion: Distal surface of anterior Radius.

Front 42

Origin (2) and Insertion for Abductor Pollicis Brevis

Back 42

Origin: Flexor retinaculum, Nearby carpals.

Insertion: Lateral base of thumb's proximal Phalanx.

Front 43

Origin (2) and Insertion for Flexor Pollicis Brevis

Back 43

Origin: Flexor retinaculum, Trapezium.

Insertion: Lateral side of base of proximal phalanx of thumb.

Front 44

Origin (2) and Insertion for Adductor Pollicis

Back 44

Origin: Capitate bone, Bases of metacarpals 2-4.

Insertion: Proximal phalanx of thumb.

Front 45

Origin (2) and Insertion for Opponens Pollicis

Back 45

Origin: Flexor retinaculum, Trapezium.

Insertion: Anterior side of metacarpal 1.

Front 46

Origin and Insertion for Abductor Digiti Minimi

Back 46

Origin: Pisiform Bone

Insertion: Proximal Phalanx of little finger.

Front 47

Origin (2) and Insertion for Flexor Digiti Minimi Brevis

Back 47

Origin: Hamate bone, Flexor Retincaculum.

Insertion: Proximal phalanx of little finger.

Front 48

Origin (2) and Insertion for Opponens Digiti Minimi

Back 48

Origin: Hamate Bone, Flexor Retinaculum.

Insertion: Medial side of Metacarpal 5.

Front 49

Origin and Insertion (2) for Dorsal Interossei

Back 49

Origin: Sides of Metacarpals

Insertion: Extensor expansion over 1st phalanx of fingers 2-4 on side opposite mudaxis of hand, both sides of finger 3.

Front 50

Origin and Insertion for Palmar Interossei

Back 50

Origin: The side of each metacarpal that faces the midaxis of the hand.

Insertion: Extensor expansion on 1st phalanx of each finger (Except finger 3) on side facing midaxis of hand.