Bio201 Lab Practical 2

Front 1

Masseter

Back 1

Action: Elevates Mandible

Synergist: Temporalis
Antagonist: Digastric
Body Builder: Yes

Front 2

Temporalis

Back 2

Action: Elevates Mandible

Synergist: Masseter
Antagonist: Digastric
Body Builder: No

Front 3

Muscles of Mastication

Back 3

Masseter and Temporalis

Front 4

Muscles of the Anterior Neck

Back 4

Digastric, Sternohyoid,

Sternothyroid,

Thyrohyoid, and

Sternocleidomastoid

Front 5

Digastric

Back 5

Action: Depresses Mandible

Synergist: N/A
Antagonist: Masseter, Temporalis
Body Builder: No

Front 6

Sternohyoid

Back 6

Action: Depresses Hyoid

Synergist: Thyrohyoid
Antagonist: N/A
Body Builder: No

Front 7

Sternothyroid

Back 7

Action: Depresses the Larynx

Synergist: N/A
Antagonist: Thyrohyoid
Body Builder: No

Front 8

Thyrohyoid

Back 8

Action: Elevates Larynx or Depresses Hyoid Bone

Synergist: Sternohyoid
Antagonist: Sternothyroid
Body Builder: No

Front 9

Sternocleidomastoid

Back 9

Action: Flexes or Rotates the Head

Synergist: N/A
Antagonist: N/A
Body Builder: Yes

Front 10

Muscles that Act on the Scapula

Back 10

Clavo-Trapezius,

Acromio-Trapezius,

Spino-Trapezius,

Pectoralis Minor,

Levator Scapulae,

Serratus Anterior,

and Rhomboideus

Front 11

Clavo-Trapezius

Back 11

Action: Flexes Neck Laterally or Elevates Clavicle

Synergist: N/A
Antagonist: N/A
Body Builder: Yes

Front 12

Acromio-Trapezius

Back 12

Action: Adducts Scapula

Synergist: Rhombodieus
Antagonist: N/A
Body Builder: Yes

Front 13

Spino-Trapezius

Back 13

Action: Depresses Scapula

Synergist: Pectoralis Minor

Antagonist: Levator Scapulae & Rhombodieus
Body Builder: Yes

Front 14

Pectoralis Minor

Back 14

Action: Steadies and Depresses Scapulae
Synergist: Spino-Trapezius
Antagonist: Levator Scapulae & Rhombodieus
Body Builder: No

Front 15

Levator Scapulae

Back 15

Action: Elevates Scapula

Synergist: Rhomboideus
Antagonist: Spino-Trapezius & Pectoralis Minor
Body Builder: No

Front 16

Serratus Anterior

Back 16

Action: Anterior Rotation of Scapula

Synergist: N/A
Antagonist: N/A
Body Builder: Yes

Front 17

Rhomboideus

Back 17

Action: Adducts and Elevates Scapula

Synergist: Acromio-Trapezius &

Levator Scapulae
Antagonist: Pectoralis Minor,

Spino-Trapezius &

Acromio-Trapezius
Body Builder: No

Front 18

Muscles that Act on the Arm

Back 18

Pectoralis Major,

Clavo-Deltoid,

Acromio-Deltoid,

Spino-Deltoid,

Infraspinatus,

Supraspinatus,

Subscapularis,

Lastissimus Dorsi, and

Teres Major

Front 19

Pectoralis Major

Back 19

Action: Flexes and Adducts Humerus

Synergist: Clavo-Deltoid & Acromio-Deltoid
Antagonist: Spino-Deltoid & Supraspinatus
Body Builder: Yes

Front 20

Clavo-Deltoid

Back 20

Action: Flexes and Medially

Rotates Humerus

Synergist: Pectoralis Major,

Subscapularis &

Teres Major
Antagonist: Spino-Deltoid &

Infraspinatus
Body Builder: Yes

Front 21

Acromio-Deltoid

Back 21

Action: Adducts Humerus

Synergist: Pectoralis Major & Latissimus
Antagonist: Supraspinatus
Body Builder: Yes

Front 22

Spino-Deltoid

Back 22

Action: (Hyper)Extends and Laterally Rotates Humerus

Synergist: Infraspinatus
Antagonist: Clavo-Deltoid & Pectoralis Major, Subscapularis, Teres Major
Body Builder: Yes

Front 23

Infraspinatus

Back 23

Action: Lateral Rotation of the Humerus

Synergist: Spino-Deltoid
Antagonist: Infraspinatus, Pectoralis Major, Subscapularis & Teres Major
Body Builder: Yes

Front 24

Supraspinatus

Back 24

Action: Abducts Humerus

Synergist: N/A
Antagonist: Acromio-Deltoid, Supraspinatus & Latissimus Dorsi
Body Builder: No

Front 25

Subscapularis

Back 25

Action: Medial Rotation of the Humerus

Synergist: Clavo-Deltoid & Teres Major
Antagonist: Infraspinatus & Spino-Deltoid
Body Builder: No

Front 26

Latissimus Dorsi

Back 26

Action: Adducts Humerus

Synergist: Acromio-Deltoid & Pectoralis Major
Antagonist: Supraspinatus
Body Builder: Yes

Front 27

Teres Major

Back 27

Action: Medial Rotation of the Humerus

Synergist: Subscapularis & Clavo-Deltoid
Antagonist: Infraspinatus & Spino-Deltoid
Body Builder: Yes

Front 28

Muscles that Act on the Forearm

Back 28

Long Head of Triceps Brachii,

Lateral Head of Triceps Brachii,

Medial Head of Triceps Brachii,

Biceps Brachii,

Brachialis,

Brachioradialis,

Pronator Teres &

Supinator

Front 29

Medial Head of Triceps Brachii

Back 29

Action: Extends Forearm

Synergist: Lateral Head of Triceps Brachii &

Long Head of Triceps Brachii
Antagonist: Biceps Brachii & Brachialis
Body Builder: Yes

Front 30

Lateral Head of Triceps Brachii

Back 30

Action: Extends Forearm

Synergist: Medial Head of Triceps Brachii & Long Head of Triceps Brachii
Antagonist: Biceps Brachii & Brachialis
Body Builder: Yes

Front 31

Long Head of Triceps Brachii

Back 31

Action: Extends Forearm

Synergist: Medial Head of Triceps Brachii & Lateral Head of Triceps Brachii
Antagonist: Biceps Brachii & Brachialis
Body Builder: Yes

Front 32

Biceps Brachii

Back 32

Action: Flexes Forearm

Synergist: Brachialis & Brachioradialis
Antagonist: Medial/Lateral/Long Heads of Triceps Brachii
Body Builder: Yes

Front 33

Brachialis

Back 33

Action: Flexes Forearm

Synergist: Biceps Brachii & Brachioradialis
Antagonist: Medial/Lateral/Long Heads of Triceps Brachii
Body Builder: Yes

Front 34

Brachioradialis

Back 34

Action: Flexes Forearm

Synergist: Biceps Brachii
Antagonist: Medial/Lateral/Long Heads of Triceps Brachii
Body Builder: Yes

Front 35

Pronator Teres

Back 35

Action: Pronation

Synergist: N/A
Antagonist: Supinator
Body Builder: No

Front 36

Supinator

Back 36

Action: Supination

Synergist: N/A
Antagonist: Pronator Teres
Body Builder: No

Front 37

Muscles that Act on the Wrist and Fingers

Back 37

Extensor Carpi Radialis Longus,

Extensor Carpi Radialis Brevis,

Extensor Digitorum,

Extensor Digiti Minimi,

Extensor Carpi Ulnaris,

Flexor Carpi Radialis,

Palmaris Longus,

Flexor Carpi Ulnaris,

Flexor Digitorum Superficialis,

Flexor Digitorum Profundus,

Abductor Pollicis Brevis

Front 38

Extensor Carpi Radialis Longus

Back 38

Action: Extends Wrist

Synergist: Extensor Carpi Radialis Brevis &

Extensor Carpi Ulnaris
Antagonist: Flexor Carpi Radialis &

Flexor Carpi Ulnaris
Body Builder: No

Front 39

Extensor Carpi Radialis Brevis

Back 39

Action: Extends Wrist

Synergist: Extensor Carpi Radialis Longus &

Extensor Carpi Ulnaris
Antagonist: Flexor Carpi Radialis &

Flexor Carpi Ulnaris
Body Builder: No

Front 40

Extensor Digitorum

Back 40

Action: Extends Digits 2-5

Synergist: N/A
Antagonist: Palmaris Longus,

Flexor Digitorum Superficialis &

Flexor Digitorum Profundus
Body Builder: No

Front 41

Extensor Digiti Minimi

Back 41

Action: Extends Digit 5

Synergist: N/A
Antagonist: Palmaris Longus,

Flexor Digitorum Superficialis &

Flexor Digitorum Profundus
Body Builder: No

Front 42

Extensor Carpi Ulnaris

Back 42

Action: Extends Wrist

Synergist: Extensor Carpi Radialis Longus &

Extensor Carpi Radialis Brevis
Antagonist: Flexor Carpi Radialis &

Flexor Carpi Ulnaris
Body Builder: Yes

Front 43

Flexor Carpi Radialis

Back 43

Action: Flexes Wrist

Synergist: Flexor Carpi Ulnaris
Antagonist: Extensor Carpi Radialis,

Extensor Carpi Brevis &

Extensor Carpi Ulnaris
Body Builder: Yes

Front 44

Palmaris Longus

Back 44

Action: Flexes Proximal Phalanges and Palm

Synergist: Flexor Digitorum Profundus
Antagonist: Extensor Digitorum &

Extensor Digiti Minimi
Body Builder: No

Front 45

Flexor Carpi Ulnaris

Back 45

Action: Flexes Wrist

Synergist: Flexor Carpi Radialis
Antagonist: Extensor Carpi Radialis,

Extensor Carpi Brevis &

Extensor Carpi Ulnaris
Body Builder: No

Two Heads In Cat

Front 46

Flexor Digitorum Superficialis

Back 46

Action: Flexes Digit 2-5

Synergist: Palmaris Longus &

Flexor Digitorum Profundus
Antagonist: Extensor Digitorum &

Extensor Digiti Minimi
Body Builder: No

(Not in Cats)

Front 47

Flexor Digitorum Profundus

Back 47

Action: Flexes Distal Phalanges of Digits 2-5

Synergist: Flexor Digitorum Superficialis
Antagonist: Extensor Digitorum &

Extensor Digiti Minimi
Body Builder: No

Front 48

Abductor Pollicis Brevis

Back 48

Action: Abducts Thumb

Synergist: N/A
Antagonist: N/A
Body Builder: No

(Not in Cats)