Lab Practical 2 Flashcards
Sternocleidomastoid
Origins: manubrium, clavicle
Insertions: Mastoid process (of temporal bone)
Action: Rotation of neck
Pectoralis Major
Origins: clavicle, sternum, and costal cartilages
Insertion: intertubercular sulcus (of humerus)
Action: Flexes the shoulder, adducts shoulder
Serratus Anterior
Origins: lateral portion of ribs 1-8
Insertion: Medial border of scapula
Action: Stabilizes scapula
Deltoid
Origins: spine of scapula, acromion, clavicle
Insertion: deltoid tuberosity of humerus
Action: Abducts shoulder
External Intercostals
Origins: inferior border of rib above
Insertion: superior border of rib below
Action: Elevate rib cage
Internal Intercostals
Origins: superior border of rib below
Insertion: inferior border of rib above
Action: Compress rib cage
Rectus Abdominis
Origins: pubic crest and symphysis
Insertion: xiphoid process, cartilage of ribs 5-7
Action: Rotates trunk
External Oblique
Origins: anterior surface of lower 8 ribs
Insertion: linea alba, pubic crest, iliac crest
Action: Rotates trunk, laterally flexes
Trapezius
Origins: occipital bone, spines of C7 & T1-12
Insertion: spine of scapula, acromion, lateral clavicle
Action: Rotates scapula
Latissimus Dorsi
Origins: iliac crest; lumbar vertebrae
Insertion: intertubercular sulcus of humerus
Action: Extend shoulder
Infraspinatus
Origins: infraspinous fossa of scapula
Insertion: greater tubercle of humerus
Action: Laterally rotates the shoulder
Supraspinatus
Origins: supraspinous fossa of scapula
Insertion: greater tubercle of humerus
Action: Abducts shoulder
Teres Major
Origins: inferior angle of scapula
Insertion: intertubercular sulcus of humerus
Action: Extends shoulder
Rhomboid Major
Origins: spinous processes of C7, T1-T5
Insertion: medial border of scapula
Action: stabilizes scapula
Triceps brachii (long head)
Origins: inferior edge of glenoid cavity of scapula
Insertion: olecranon of ulna
Action: extend elbow
Triceps Brachii (lateral head)
Origins: posterior proximal humerus
Insertion: olecranon of ulna
Action: elbow extension
Biceps Brachii (long head)
Origins: superior edge of glenoid cavity of scapula
Insertion: radial tuberosity
Action: flexes elbow
Biceps Brachii (short head)
Origins: coracoid process of scapula
Insertion: radial tuberosity
Action: flexes elbow
Brachioradialis
Origins: lateral distal humerus
Insertion: styloid process of radius
Action: flexes elbow
Brachialis
Origins: anterior distal humerus
Insertion: coronoid process of ulna
Action: flexes elbow
Pronator teres
Origins: medial epicondyle of humerus
Insertion: middle of radius
Action: forearm pronation
Flexor Carpi Radialis
Origins: medial epicondyle of humerus
Insertion: base of metacarpals II and III
Action: flexes wrist, abducts wrist
Palmaris longus
Origins: medial epicondyle of humerus
Insertion: palmar aponeurosis
Action: flexes wrist
Flexor Carpi ulnaris
Origins: medial epicondyle of humerus
Insertion: base of metacarpal V
Action: flex wrist
Flexor digitorum superficialis
Origins: medial epicondyle of humerus
Insertion: middle phalanges of digits 2-5
Action: flexes fingers
Extensor Carpis Radialis longus
Origins: lateral epicondyle of humerus
Insertion: base of metacarpal II
Action: extends wrist
Extensor carpis radialis brevis
Origins: lateral epicondyle of humerus
Insertion: base of metacarpal III
Action: extends wrist
Extensor digitorum
Origins: lateral epicondyle of humerus
Insertion: distal phalanges of digits 2-5
Action: extends fingers
Extensor Carpi Ulnaris
Origin: lateral epicondyle of humerus
Insertion: base of metacarpal V
Action: Extends wrist
Sartorius
Origin : anterior superior iliac spine
Insertion:medial proximal tibia
Action: flexes knee
Pectineus
Origin : superior pubic ramus
Insertion: posterior proximal femur
Action:hip adduction
Aductor Longus
Origin : pubic symphysis
Insertion: linea aspera of femur
Action: hip adduction
Gracilis
Origin : inferior pubic ramus
Insertion: medial proximal tibia
Action: hip adduction
Rectus Femoris
Origin : anterior inferior iliac spine
Insertion: tibial tuberosity
Action: extends knee
Vastus Lateralis
Origin : greater trochanter of femur
Insertion: tibial tuberosity
Action: extends knee
Vastus Medialis
Origin : interochanteric line of femur
Insertion: tibial tuberosity
Action: extends knee
Vastus Intermedius (underneath rectus femoris)
Origin : anterior proximal femur
Insertion: tibial tuberosity
Action: extends knee
Tensor Fascia Lata
Origin : anterior iliac crest
Insertion: iliotibial band
Action: stabilizes knee
Gluteus Maximus
Origin : posterior ilium, sacrum, coccyx
Insertion: gluteal tuberosity of femur
Action: extends hip
Biceps Femoris Long Head
Origin : ischial tuberosity
Insertion: head of fibula, lateral condyle of tibia
Action: flexes knee
Biceps Femoris Short Head
Origin : linea aspera of femur
Insertion: head of fibula, lateral condyle of tibia
Action: flexes knee
Semitendinosus
Origin : ischial tuberosity
Insertion: medial proximal tibia
Action: flexes knee
Semimembranosus
Origin : ischial tuberosity
Insertion: medial condyle of tibia
Action: flexes knee
Fibularis Longus
Origin : head of fibula
Insertion: metatarsal I
Action: plantar flexes ankle
fibularis brevis (under Longus)
Origin : lateral distal fibula
Insertion: Metatarsal V
Action: plantar flexes ankle
Tibialis Anterior
Origin : anterior proximal tibia
Insertion: Metatarsal I
Action: dorsiflexes ankle
extensor digitorum longus
Origin : Lateral condyle of tibia
Insertion: middle & distal phalanges 2-5 (dorsal)
Action: extends toes
extensor hallucis longus
Origin: anterior shaft of fibula
Insertion: distal phalange of hallux
Action: extends hallux
gastrocnemius - medial head
Origin: medial condyle of femur
Insertion: calcaneus
Action: plantar flexes ankle
gastrocnemius - lateral head
Origin: lateral condyle of femur
Insertion: calcaneus
Action: plantar flexes ankle
soleus
Origin: posterior proximal tibia and fibula
Insertion: calcaneus
Action: plantar flexes ankle
flexor digitorum longus (soleus/gastrocnemius removed)
Origin: posterior shaft of tibia
Insertion: distal phalanges 2-5 inferior side
Action: flexes toes
Tibialis Posterior
Origin: superior posterior tibia and fibula
Insertion: inferior tarsals and metatarsals II-V
Action: inverts ankle
flexor hallucis longus
origin: posterior shaft of fibula
insertion: distal phalange of hallux
action: flexes hallux, inverts & plantarflexes ankle
