Study Sheet Appendicular Flashcards
What are the actions of….

Superior fibers: Elevate the superiorly rotate scapula.
Middle Fibers: Retract scapula
Inferior Fibers: Depress scapula
(Trapezius)
What is the origin and insertion of…

Origin: Occipital bone (superior nuchal line); ligamentum nuchae; spinous processes of C7-T12
Insertion: Clavicle; acromion process and spine of scapula
What are the actions of…?

Agonist of arm extension; also adducts and medially rotates arm.
(Latissimus dorsi)
What is the origin and insertion of…

Origin: Spinous processes of T7-T12; ribs 8-12; iliac crest; thoracolumbar fascia
Insertion: Intertubercular Sulcus of humerus
What are the actions of…

Anterior Fibers: Flex and medially rotate arm.
Middle Fibers: Agonist of arm abduction.
Posterior Fibers: Extend and laterally rotate arm.
What is the origin and insertion of….

Origin: Acromial end of clavicle; acromion and spine of scapula
Insertion: Deltoid Tuberosity of humerous
What is the function of…

Agonist of arm flexion; also adducts and medially rotates arm. Also horizontally adducts the arm.
(Pectoralis major)
What is the origin and insertion of…

Origin: Medial clavicle; costal cartilages of ribs 2-6; body of sternum.
Insertion: Lateral part of intertubercular sulcus of humerus
Function/Action of…

(Bicep brachii) Flexes forearm, powerful supinator of forearm. Long head flexes arm.
Origin and Insertion of…

Origin:
- Long head: Supraglenoid tubercle of scapula
- Short head: Coracoid process of scapula
Insertion:
- radial tuberosity and bicipital aponeurosis.
Function/Action of…

(psoas major): flexes thigh
Origin and Insertion of…

Origin: Transverse processes and bodies of T12-L5 vertebrae.
Insertion: Lesser trochanter of fumer with iliacus.
Function/Action of…

Iliacus: Flexes thigh
What is the origin and insertion of…

Origin: Iliac fossa
Insertion: Lesser trochanter of femur with psoas major
This muscle group is a combination of what two muscles?

Iliopsoas
What is the function/action of…

Extends thigh; laterally rotates thigh
(Gluteus maximus)
What is the origin and insertion of…

Origin: Iliac crest, sacrum, coccyx
Insertion: Iliotibial tract of fascia lata; linea aspera and gluteal tuberosity of femur
What is the function/action of…

Flexes thigh, extends leg
(rectus femoris)
What is the origin and insertion of?

Origin: Anterior Inferior iliac spine
Insertion: Quadriceps tendon to patella and then patellar ligament to tibial tuberosity
What is the function of…

Dorsiflexes foot, inverts foot
(Tibialis anterior)
What is the origin and insertion of

Origin: Lateral condyle and proximal shaft of tibia; interosseous membrane
Insertion: Metatarsal I and first (medial) cuneiform
What is the function/action…

Flexes leg; plantar flexes foot
(gastrocnemius)
What is the origin and insertion of…

Origin: Superior posterior surfaces of lateral and medial condyles of femur
Insertion: Calcaneus (via calcaneal tendon)