1 BIOL2050 – Human Anatomy

Selected Skeletal Muscles Learning Matrix

Use this learning matrix to help you learn the skeletal muscles. You will be responsible for all the muscles listed below. Complete the blank areas – I have filled in some examples to start you off. Use the lecture notes and the level of detail in them to complete the matrix. You are not responsible for any areas in the table that are crossed out. The ‘Additional Notes’ column is for anything you may like to add that will help you learn the muscle or any special mention in the lecture notes that may be of importance. If you wish, you can make up flashcards instead of this table – some students prefer flashcards.

Muscle Action Origin Insertion Additional NotesFacial ExpressionOrbicularis oculi

Various positions on skull Facial skin

Lavator palpebrae superiorisOrbicularis orisZygomaticus majorZygomaticus minorBuccinator

Extrinsic Muscles of EyeballSuperior rectusInferior rectusLateral rectusMedial rectusSuperior obliqueInferior oblique

Muscle That Move Mandible

Masseter Maxilla and zygomatic arch

Angle of ramus of mandible

Temporalis Temporal bone Coronoid process and ramus of mandible

Medial pterygoid Sphenoid bone; maxilla Angle of ramus of mandible

2 BIOL2050 – Human Anatomy

Lateral pterygoid

Greater wing of sphenoid, lateral surface of petrygoid process of sphenoid

Condyle of mandible, temoromandibular joint

Digastric Mandible Hyoid bone

Muscle Origin Insertion Additional NotesHead MovementSternocleidomastoid Sternum and clavicle Mastoid process

Semispinalis capitis C4 toC7 and T1-T7 occipital bone

Splenius capitus ligamentum nuchae and C7 and T1-4

Occipital bone and mastoid process

Splenius cervicis Spinous process of C7-T4 Transverse process of C1-C2 or C1-C4

Abdominal Wall

Rectus abdominis Pubic crest and pubic symphysis

Cartilage of 5th to 7th ribs and xiphoid process

External oblique Ribs 5-12 iliac crest and linea alba

Internal oblique iliac crest and fascia cartilage of ribs 7-10 and linea alba

Transversus abdominis iliac crest, fascia and cartilages of ribs 5-10

xiphoid process, linea alba and pubis

Quadratus lumborum Iliac crest Inferior border of 12th rib and L1-4

Breathing Muscles

Diaphragmxiphoid, costal cartilages of inferior 6 ribs, lumbar vertebrae

Central tendon

Internal intercostals Superior border of rib Inferior border of rib above

External intercostals Interior border of rib above

Superior border of rib below

3 BIOL2050 – Human Anatomy

Pectoral GirdleSubclavius First rib Clavicle

Pectoralis minor2nd – 5th, 3rd – 5th, or 2nd – 4th ribs

Coracoid process of scapula

Serratus anterior Superior eight or nine ribs Vertebral border and inferior angle of scapula

**Annette’s favourite muscle!

Trapezius occipital bone and cervical and C7-T2

clavicle and acromion and spine scapula

Levator scapulae C1-C4 (transverse processes

scapula (superior vertebral border

Rhomboid major T2-T5 (spines scapula (inferior vertebral border)

Rhomboid minor C7-T1 (spines) scapula (superior vertebral border)

Muscles That Move Humerus

Pectoralis major clavicle, sternum costal cartilages of ribs 2-6 humerus (greater tubercle

Latissimus dorsiT7-L5 (spines) crests of sacrum and illium, inferior four ribs

humerus (intertubercular sulcus

Deltoid acromion & spine of scapula

deltioid tuberosity of humerus

Subscapularis subscapular fossa of scapula lesser tubercle of humerus

Supraspinatus supraspinous fossa of scapula

greater tubercle of humerus

Infraspinatus infraspinous fossa of scapula

greater tubercle of humerus

Muscle Origin Insertion Additional Notes

Teres minor inferior lateral border of scapula

greater tubercle of humerus

Teres major inferior angel of scapula intertubercular sulcus of humerus

Coracobrachialis coracoid process of middle of medial surface

4 BIOL2050 – Human Anatomy

scapula of shaft of humerus

Muscles That Move Radius/UlnaBiceps brachiiBrachialisBrachioradialisTriceps brachii long headTriceps brachii medial and lateral headsAnconeusPronator teresPronator quadratusSupinator

Wrist, Hand, Fingers, ThumbFlexor carpi radialisFlexor carpi ulnarisPalmaris longusFlexor digitorum superficialisFlexor digitorum profundusExtensor carpi radialis, longus and brevisExtensor carpi ulnaris

Intrinsic Hand MusclesThenarHypothenarIntermediate

Vertebral MusclesErector spinae: Spinalis group

Muscle Origin Insertion Additional Notes Iliocostalis group Longissimus group

5 BIOL2050 – Human Anatomy

Scalenes group (anterior, posterior and middle)

Hip MusclesIliopsoas (psoas major and iliacus)Quadriceps femoris: Rectus femoris Vastus lateralis Vastus intermedius Vastus medialisAdductor group: Pectineus Adductor longus Adductor brevis Gracilis Adductor magnus

Muscles That Move ThighGluteus maximusGluteus mediusGluteus minimusHamstrings: Semimembranosus Semitendonosus Biceps femoris

Leg, Foot and CalfGastrocnemiusPlantarisSoleusTibialis posteriorFlexor digitorum longus

Muscle Origin Insertion Additional NotesFlexor hallucis longus

6 BIOL2050 – Human Anatomy

Tibialis anteriorExtensor digitorum longusExtensor hallucis longusDigiti minimi