Origins + insertions 3

Question 1

Adductor Magnus

Answer 1

A: Adduction and medial rotation

O: Pubic rams, ischium, ischial tuberosity

I: Whole of Linea Aspera and adductor tubercle of femur

Question 2

Peroneus brevis

Answer 2

Everts and plantar flexes foot

O: lower 2/3 lateral Fibula

I: Tubercle on lateral base 5th metatarsals

Question 3

Multifidus

Answer 3

A: Rotates, extends and laterally flexes spine

O: Posterior sacrum, lumbar vertebra, transverse processes of thoracic and lower 5 cervical vertebra

I: Fibres in 3 layers, passing upward/medial to attach to all spinous processes, L5 - C1

Question 4

Supraspinatus

Answer 4

A: Weak abduction and stabilisation

O: medial 2/3 of supraspinatus fossa

I: Superior aspect of greater tubercle of the Humerus

Question 5

Infraspinatus

Answer 5

A: External rotation, horizontal abduction, extension and stabilisation

O: Medial aspect of infraspinatus fossa, below scapula spine

I: Posterior aspect of greater tubercle (posterior of supraspinatus insertion)

Question 6

Brachioradialis

Answer 6

A: flexes the elbow, returns forearm to neutral

O: Distal 2/3 of lateral supracondyloid ridge of hummers

I: Lateral surface of distal styloid process

Question 7

Piriformis

Answer 7

A: Lateral rotation and stabilisation of the hip

O: Front 2-4 sacral segments

I: Upper border and medial side of greater trochanter

Question 8

Tricep Brachii

Answer 8

A: Extend elbow, LH extends and adducts shoulder

O: LoH: Ingraglenoid tubercle
LaH: Upper half of posterior humerus
MH: Distal 2/3 posterior humerus

I: Olecranon process of ulna

Question 9

Sartorius (Adductor)

Answer 9

A: Flexes, adducts and laterally rotates femur, flexes knee

O: ASIS

I: Anterior medial condyle of Tibia

Question 10

Gluteus Maximus

Answer 10

A: Upper abduction and lateral rotation of thigh
Lower extends and laterally rotates thigh

O: Posterior iliac crest, sacrum, coccyx and lumbar fascia

I: Oblique ridge of lateral greater trochanter, ITB, gluteal tuberosity

Question 11

Bicep Femoris

Answer 11

A: Flexes knee and extends hip

O: LH: Ischial tuberosity
SH: Lower half of Linea Aspera and lateral condyle ridge

I: Lateral condyle of Tibia and head of Fibula

Question 12

Semitendinosus

Answer 12

A: Flexes knee and extends hip

O: Ischial tuberosity

I: Upper medial aspect of Tibia

Question 13

Semimembranosus

Answer 13

A: Flexes knee and extends hip

O: Ischial tuberosity

I: Medial tibial condyle

Question 14

Recrus Femoris

Answer 14

A: Extends knee and flexes hip

O: Inferior ASIS

I: Superior aspect of patella and patella tendon to tibial tuberosity