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Anatomy 1 Harry Yuan

Muscles: Insertions, Origins, Actions Lab Pract. 2 Study Material

Muscle Origin of:OriginMuscle Insertion of:InsertionMuscle Action of:Action
Trapezius Occipital bone; cervical and thoracic vertebrae Trapezius Spine and acromion process of scapula Trapezius Raises clavicle; adducts, elevates and depresses scapula.
Deltoid Clavicle; spine and acromion process of scapula Deltoid Humerus Deltoid Abduct arm
Latissiumus dorsi Spines of thoracic and lumbar vertebrae, crests of sacrum and ilium, last four ribs Latissiumus dorsi Intertubercular groove of humerus Latissiumus dorsi Extends, adducts, and rotates arm medially; pulls shoulder down and back
Rhomboideus major Spines of second through fifth thoracic vertebrae Rhomboideus major Vertebral border of scapula Rhomboideus major Moves scapula back and up and rotates it downward
Rhomboideus minor Spines of seventh cervical and first thoracic vertebrae Rhomboideus minor Superior angle of scapula Rhomboideus minor Adducts scapula
Supraspinatus Supraspinous fossa of scapula Supraspinatus Greater tubercle of humerus Supraspinatus Rotates humerus laterally
Infraspinatus Infraspinous fossa scapula Infraspinatus Greater tubercule of humerus Infraspinatus Rotates humerus laterally
Teres major Inferior angle of scapula Teres major Proximal end of humerus Teres major Extends humerus; adducts and rotates arm
Pectoral and Abdominal Muscles of the Cat (blank) (blank) (blank) (blank) (blank)
Pectoantebrachialis Manubrium Pectoantebrachialis Proximal end of forearm by fascia Pectoantebrachialis Adducts arm
Pectoralis major Anterior third of sternum Pectoralis major Proximal two-thirds of humerus Pectoralis major Adducts arm
Pectoralis minor Almost entire length of sternum Pectoralis minor Proximal half of humerus Pectoralis minor Adducts arm
Xiphihumeralis Xiphoid process Xiphihumeralis Proximal end of humerus Xiphihumeralis Adducts arm
Pectoral and Abdominal Muscles of the Human (blank) (blank) (blank) (blank) (blank)
Pectoralis major Clavicle, sternum, and cartilage of second through sixth ribs Pectoralis major Greater tubercle of humerus Pectoralis major Flexes, adducts, and rotates arm medially
Pectoralis minor Third through fifth ribs Pectoralis minor Coracoid process of scapuls Pectoralis minor Depresses scapula; rotates shoulder upward
External oblique Lower eight ribs External oblique Iliac crest and linea alba External oblique Compresses abdomen
Internal oblique Iliac crest, inguinal ligament, and thoracolumbar fascia Internal oblique Costal cartilage of last three or four ribs Internal oblique Compresses abdomen
Transversus abdominis Iliac crest, inguinal ligament, lumbar fascia, and cartilage of last six ribs Transversus abdominis Xiphoid process, linea alba, and pubis Transversus abdominis Compresses abdomen
Rectus abdominis Pubic crest and symphysis pubis Rectus abdominis Costal cartilage of fifth to seventh ribs and xiphoid process Rectus abdominis Flexes vertebral column
Muscles That Move the Lower Jaw (blank) (blank) (blank) (blank) (blank)
Masseter Maxilla and zygomatic arch Masseter Angle and ramus of mandible Masseter Elevates mandible as in closing the mouth and protracts(protrudes mandible)
Temporalis Temporal bone Temporalis Coronoid process of mandible Temporalis Elevates and retracts mandible
Muscles of Facial Expression (blank) (blank) (blank) (blank) (blank)
Frontalis Galea aponeurotica Frontalis Skin wuperior to supraorbital line Frontalis Draws scalp forward, raises eyebrows, and wrinkles forehead horizontally
Occipitalis Occipital bone and mastoid process of temporal bone Occipitalis Galea aponeurotica Occipitalis Draws scalp backward
Orbicularis oris Muscle fibers surrounding opening of mouth Orbicularis oris Skin at corner of mouth Orbicularis oris Closes lips, compresses lips against teeth, protrudes lips, and shapes lips during speech
Zygomaticus Zygomatic bone Zygomaticus Skin at angle of mouth and orbicularis oris Zygomaticus Draws angle of mouth upward and outward as in smiling or laughing
Mentalis Mandible Mentalis Skin of chin Mentalis Elevates and protrudes lower lip and pulls skin of chin up as in pouting
Orbicularis oculi Medial wall of orbit Orbicularis oculi Circular path around orbit Orbicularis oculi Closes eyes
Sternoclediomastoid Manubrium Sternoclediomastoid Mastoid process Sternoclediomastoid Rotate head
Deep Chest Muscles of the Human (blank) (blank) (blank) (blank) (blank)
Serratus anterior First eight or nine ribs Serratus anterior Vertebral border and inferior angle of scapula Serratus anterior Pulls scapula forward and rotates it upward
Coracobrachialis Coracoid process of scapula Coracobrachialis Humerus Coracobrachialis Adducts, flexes, and rotates arm
External intercostals Inferior border of rib above External intercostals Superior border of rib below External intercostals Raise rib at inhalation and thereby increases size of thoracic cavity
Internal intercostals Superior border of rib below Internal intercostals Inferior border of rib above Internal intercostals Draw adjacent ribs together and lower ribs at exhalation
Arm Muscles of the Human (blank) (blank) (blank) (blank) (blank)
Triceps brachii (Long head) Infraglenoid tuberosity of scapula Triceps brachii (Long head) Olecranon process of ulna Triceps brachii (Long head) Extends forearm
Triceps brachii (Lateral head) Above radial groove of humerus Triceps brachii (Lateral head) Olecranon process of ulna Triceps brachii (Lateral head) Extends forearm
Triceps brachii (Medial head) Below radial groove of humerus Triceps brachii (Medial head) Olecranon process of ulna Triceps brachii (Medial head) Extends forearm
Brachialis Anterior surface of humerus Brachialis Tuberosity and coronoid process of ulna Brachialis Flexes forearm
Biceps brachii (Long head) Near glenoid fossa of scapula Biceps brachii (Long head) Radial tuberosity Biceps brachii (Long head) Flexes and supinates forearm
Biceps brachii (Short head Coracoid process of scapula Biceps brachii (Short head Radial tuberosity Biceps brachii (Short head Flexes and supinates forearm
Supinator Lateral epicondyle of humerus and ridge of ulna Supinator Oblique line of radius Supinator Supinates forearm
Pronator teres Medial epicondyle of humerus and coronoid process of ulna Pronator teres Lateral surface of radius Pronator teres Pronates forearm
Hip and Thigh Muscles of the Human (blank) (blank) (blank) (blank) (blank)
Gluteus maximus Iliac crest, sacrum, and coccyx Gluteus maximus Iliotibial tract of fascia lata and gluteal tuberosity of femurIliotibial tract of fascia lata and gluteal tuberosity of femur Gluteus maximus Extends and rotates femur laterally
Gluteus medius Ilium Gluteus medius Greater trochanter of femur Gluteus medius Abducts and rotates femur laterally
Gluteus minimus Ilium Gluteus minimus Greater trochanter of femur Gluteus minimus Abducts and rotates femur medially
Tensor fasciae latae Iliac crest Tensor fasciae latae Iliotibial tract of fascia lata Tensor fasciae latae Flexes and abducts femur
Adductor longus Pubic crest and symphysis Adductor longus Linia aspera of femur Adductor longus Adducts, rotates, and flexes femur
Adductor magnus Pubis and ischium Adductor magnus Linea aspera of femur Adductor magnus Adducts, flexes, and extends femur
Psoas major Transverse rocesses and centra of lumbar vertebrae Psoas major Lesser trochanter of femur Psoas major Flexes and rotates femur laterally; flexes vertebral column
Iliacus Iliac fossa Iliacus Tendon of psoas major Iliacus Flexes and rotates femur laterally; flexes vertebral column
Pectineus Fascia of pubis Pectineus Pectineal line of femur Pectineus Flexes, adducts, and rotates thing laterally
Biceps femoris Ischial tuberosity and linea aspera of femur Biceps femoris Head of fibula and lateral condyle of tibia Biceps femoris Flexes knee; extends thigh
Semitendinosus Ischial tuberosity Semitendinosus Proximal end of tibia Semitendinosus Flexes knee; extends thigh
Semimembranosus Ischial tuberosity Semimembranosus Medial condyle of tibia Semimembranosus Flexes knee; extends thigh
Gracilis Pubic symphysis and pubic arch Gracilis Medial surface of tibia Gracilis Flexes knee; adducts thigh
Sartorius Anterior superior spine of ilium Sartorius Medial surface of tibia Sartorius Flexes knee; flexes thigh and rotates it laterally
Quadriceps (blank) (blank) (blank) (blank) (blank)
Rectus femoris Anterior inferior spine of ilium Rectus femoris Upper border of patella Rectus femoris Extends knee; flexes thigh
Vastus lateralis Greater trochanter and linea aspea of femur Vastus lateralis Patella and tibial tuberosity Vastus lateralis Extends knee
Vastus medialis Linea aspera of femur Vasuts medialis Patella and tibial tuberosity Vasuts medialis Extends knee
Vastus intermedius Anterior and lateral surface of femur Vastus intermedius Patella and tibial tuberosity Vastus intermedius Extends knee
Superficial Lower Leg Muscles of the Human (blank) (blank) (blank) (blank) (blank)
Gastroncnemius Lateral and medial condyles of femur and capsule of knee Gastroncnemius Calcaneus by Achilles tendon Gastroncnemius Plantar flexes (extends foot)
Soleus Head of fibula and medial border of tibia Soleus Calcaneus by Achilles tendon Soleus Plantar flexes foot
Peroneus longus Head and body of fibula and lateral condyle of tibia Peroneus longus First metatarsal and first cuneiform Peroneus longus Plantar flexes and everts foot
Peroneus brevis Body of fibula Peroneus brevis Fifth metatarsal Peroneus brevis Plantar flexes and everts foot
Tibialis anterior Lateral condyle and body of tibia Tibialis anterior First metatarsal and first cuneiform Tibialis anterior Flexes foot dorsally and inverts it
Tibialis posterior Membrane between tibia and fibula Tibialis posterior Second, third, and fourth metatarsals; navicular; third cuneiform; cuboid Tibialis posterior Plantar flexes and inverts foot
Flexor digitorum longus Tibia Flexor digitorum longus Distal phalanges of four outer toes Flexor digitorum longus Flexes toes; plantar flexes and inverts foot
Extensor digitorum longus Lateral condyle of tibia and anterior surface of fibula Extensor digitorum longus Middle and distal phalanges of four outer toes Extensor digitorum longus Extends toes, flexes foot dorsally and everts it
Created by: joshgilpatrick