Muscles - Attachments & Actions Flashcards by John Stoneman

What are the attachments of the Deltoid?

Clavicle, scapula - Deltoid tuberosity of humerus

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What are the attachments of the Gastrocnemius?

Posterior, medial and lateral femoral condyles - via Achilles tendon to posterior calcaneum

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What are the actions of the Biceps Femoris?

Flexes knee, extends hip, stabilises knee when extended, slight rotation when flexed

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What are the actions of the Gluteus Maximus?

Extends and outwardly rotates hip

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What are the attachments of the Teres Minor?

Scapula - Great tuberosity of humerus

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What are the actions of the Adductor Magnus?

Adducts leg and outwardly rotates thigh, when leg is abducted, flexed or extended, may also inwardly rotate

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What are the attachments of the Quadratus Lumborum?

Iliac crest - 12 rib, L1 to L4

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What are the actions of the Rectus Abdominis?

Flexes trunk

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What are the actions of the Adductor Longus?

Adducts leg and outwardly rotates thigh, when leg is abducted, flexed or extended, may also inwardly rotate

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What are the actions of the Rectus Abdominis?

Flexes trunk

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What are the attachments of the Infraspinatus?

Scapula - Great tuberosity of humerus

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What are the actions of the Pectoralis Minor?

Draws scapula forward and down

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What are the actions of the Soleus?

Plantaflexes foot

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What are the attachments of the Pectoralis Minor?

3rd to 5th ribs - Coracoid process of scapula

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What are the actions of the Semimembranosus?

Flexes knee, extends hip, stabilises knee when extended, slight rotation when flexed

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What are the actions of the Pectoralis Major?

Horizontal adduction, adducts, flexes and inwardly rotates arm

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What are the attachments of the Soleus?

Posterior tibia and fibula - via Achilles tendon to posterior calcaneum

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What are the actions of the Scalenes?

Side-bends and rotates head. Raises ribs (inspiration)

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What are the actions of the Gluteus Medius?

Flexes and inwardly rotates hip, abducts and outwardly rotates hip

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What are the actions of the Gracilis?

Adducts leg, flexes knee and hip

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What are the attachments of the Triceps Brachii?

Long head: scapula / Medial and lateral heads: humerus - Via tendon to ulna

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What are the actions of the Scalenes?

Side-bends and rotates head. Raises ribs (inspiration)

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What are the attachments of the Adductor Magnus?

From pubis to ischium - Medial border of femur

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What are the actions of the Vastus Medialis?

Extends knee

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What are the attachments of the Vastus Intermedius?

Femur - Patella border and ligament to tibial tuberosity

What are the attachments of the Gluteus Minimus?

Lower surface of ilium - Greater trochanter of femur

What are the actions of the Subscapularis?

Inwardly rotates arm

What are the attachments of the Subscapularis?

Scapula - Lesser tuberosity of humerus

What are the actions of the Psoas?

Flexes the hip, assists side bending and inward rotation of thigh

What are the attachments of the Adductor Brevis?

From pubis to ischium - Medial border of femur

What are the attachments of the Supraspinatus?

Scapula - Great tuberosity of humerus

What are the attachments of the Sternocleidomastoid?

Sternum and clavicle - Mastoid process

What are the actions of the Rectus Femoris?

Knee extension, hip flexion

What are the attachments of the Rectus Femoris?

Anterior inferior iliac spine, acetabulum - patellar tendon

What are the actions of the Pectoralis Major?

Horizontal adduction, adducts, flexes and inwardly rotates arm

What are the actions of the Quadratus Lumborum?

Extends lower back, side-bends trunk

What are the attachments of the Levator Scapulae?

C1 to C4 - Scapula

What are the actions of the Levator Scapulae?

Raises scapula, rotates and side-bends head

What are the attachments of the Trapezius?

Occipital bone, ligaments of C & T spine - Clavical and spine of scapula

What are the actions of the Pectoralis Minor?

Draws scapula forward and down

What are the attachments of the Gluteus Maximus?

Medial iliac crest, sacrum - Iliotibial band, gluteal tuberosity of femur

What are the attachments of the Erector Spinae (group)?

Sacrum, iliac crest, ribs, vertebrae - ribs, vertebrae, mastoid process

What are the actions of the Tibalis Anterior?

Dorsiflexes foot and slight supinator

What are the actions of the Semitendinosus?

Flexes knee, extends hip, stabilises knee when extended, slight rotation when flexed

What are the attachments of the Vastus Medialis?

Femur - Patella border and ligament to tibial tuberosity

What are the attachments of the Rectus Abdominis?

Pubis - costal cartilage, 5th to 7th ribs and base of sternum

What are the actions of the Trapezius?

Stabilises scapula, some elevation and rotation

What are the actions of the Adductor Brevis?

Adducts leg and outwardly rotates thigh, when leg is abducted, flexed or extended, may also inwardly rotate

What are the actions of the Triceps Brachii?

Extends elbow, adducts arm

What are the actions of the Latissimus Dorsi?

Adducts, draws back and inwardly rotates arm

What are the actions of the Vastus Intermedius?

Extends knee

What are the attachments of the Gluteus Medius?

Upper surface of ilium - Greater trochanter of femur

What are the actions of the Infraspinatus?

Outwardly rotates arm

What are the actions of the Biceps Brachii?

Flexor of forearm, abducts and inwardly rotates arm, adducts arm

What are the actions of the Rhomboids?

Pulls, rotates and holds scapula

What are the attachments of the Biceps Femoris?

Ischial tuberosity - Lateral tibial condyle, lateral head of fibula

What are the actions of the Pectineus?

Adducts leg and outwardly rotates thigh, when leg is abducted, flexed or extended, may also inwardly rotate

What are the actions of the Gluteus Minimus?

Abducts and inwardly rotates hip

What are the actions of the Gastrocnemius?

Plantaflexes foot and flexes knee

What are the actions of the Teres Major?

Inwardly rotates and adducts arm

What are the attachments of the Tibialis Anterior?

Lateral surface of tibia - Plantar surface of 1st metatarsal and medial cuneiform

What are the attachments of the Teres Major?

Scapula - Medial lip of bicipital groove of humerus

What are the attachments of the Vastus Lateralis?

Femur - Patella border and ligament to tibial tuberosity

What are the actions of the Sternocleidomastoid?

Flexes, rotates and side-bends head

What are the attachments of the Pectineus?

Upper pubis - Linea aspera of femur, lesser trochanter

What are the actions of the Erector Spinae (group)?

Extends spine, Side-bends spine, extends and rotates head, all intervertebral movements

What are the attachments of the Psoas?

T12 to L4/5 - Lesser Trochanter of femur

What are the actions of the Vastus Lateralis?

Extends knee

What are the attachments of the Semitendinosus?

Ischial tuberosity - Medial tibial condyle

What are the actions of the Teres Minor?

Outwardly rotates arm

What are the actions of the Supraspinatus?

Abducts arm

What are the actions of the Deltoid?

Draws arm forward and extends, rotates, abducts arm

What are the attachments of the Semimembranosus?

Ischial tuberosity - Medial tibial condyle

What are the actions of the Tensor Fasciae Latae?

Flexes, rotates and abducts hip, rotates knee, stabilizes torso

What are the attachments of the Adductor Longus?

From pubis to ischium - Medial border of femur

What are the attachments of the Scalenes?

C2 to C7 - 1st and 2nd rib (lateral)

What are the attachments of the Gracilis?

Lower pubis - Upper, medial tibial shaft

What are the attachments of the Tensor Fasciae Latae?

Anterior inferior iliac spine - Iliotibial tract

What are the attachments of the Rhomboids?

C6 to T4 - Scapula

What are the attachments of the Latissimus Dorsi?

T7 to T12, L1-L5, Iliac crest - Bicipital groove of humerus

What are the actions of the Sternocleidomastoid?

Flexes, rotates and side-bends head

What are the attachments of the Pectoralis Major?

Clavicle, sternum, 1st to 6th ribs, abdominal aponeurosis and obliques - lateral lip of bicipital groove of humerus

What are the attachments of the Biceps Brachii?

Long head: passes over top of joint to scapula / Short head: coracoid process of scapula - Via tendon to radial tuberosity and bicipital aponeurosis