Chapter 12 Appendicular muscles
Upper limb muscles to know and identify Shoulder: Deltoid (sometimes referred as axial muscle). Upper arm (brachium): Biceps brachii, Triceps brachii, Brachialis, Brachioradialis
Upper arm
Forearm muscles
Lower limb muscles to know and identify Upper leg: Sartorius, Tensor fasciae latae, Adductor longus, Adductor magnus, Gracilis, Rectus femoris, Vastus lateralis, Vastus medialis, Biceps femoris, Semitendinosus, Semimembranosis. Lower leg and calf: Tibialis anterior, Gastrocnemius, Soleus
Quadriceps femoris group Rectus femoris Vastus medialis Vastus lateralis Vastus intermedius
Hamstring muscle group Biceps femoris Semimembranosis Semitendonosis
Muscles of lower leg
Appendicular muscles to know origin and insertion Biceps brachii- Rectus femoris Triceps brachii- Biceps femoris Sartorius- Deltoid - Gastrocnemeus
Biceps brachii Origin: SH coracoid process; LH supraglenoid tubercle Insertion: Radial tuberosity Action: flex elbow and shoulder
Triceps brachii Origin: Lat H: Sup, lateral margin of humerus; LH: Infraglenoid tubercle; Med H: Post humerus Insertion: Olecranon of ulna Action: Extension at elbow
Deltoid Origin: Clavicle, scapula acromion and spine Insertion: Deltoid tuberosity of humerus Action: Abducts shoulder; flexion and rotation of humerus; extension and lateral rotation of humerus
Rectus femoris (Quads) Origin: Ant iliac spine and sup. margin acetabulum Insertion: Patella and tibial tuberosity Action: Extension of leg at knee; flex thigh at hip
Sartorius Origin: Ant, superior spine of ilium Insertion: Medial aspect tibial tuberosity Action: Flexes, abducts and laterally rotates thigh at hip; flexes knee
Biceps femoris (Hamstrings) Origin: LH: ischial tuberosity; SH: linea aspera of femur Insertion: Head of fibula Action: Flexes knee; extends hip; laterally rotates leg
Gastrocnemius Origin: Lateral condyle and popliteal surface of femur Insertion: Calcaneus via achilles tendon Action: Flexes knee and plantar flexion of foot
Structures to know and identify Tendons Galea aponeurosis Linea alba Iliotibial tract Calcaneal “achiles” tendon