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Important OIA's
| Question | Answer |
|---|---|
| What is the origin of the Deltoid? | Lateral 1/3 of clavicle, acromion and spine of the scapula. |
| What is the insertion of the Deltoid? | Deltoid tuberosity. |
| What are the actions of the Deltoid? | Anterior: flex the shoulder, medially rotate the shoulder, horizontally adduct the shoulder.Posterior: Extend the shoulder, laterally rotate the shoulder, and horizontally abduct the shoulder.All: Abduct the shoulder |
| What is the origin of the trapezius? | External occipital protuberance, medial portion of the superior nuchal line, ligamentum nuchae, and spinous processes of C7 – T12. |
| What is the insertion of the trapezius? | Lateral 1/3 of clavicle, acromion, and spine of the scapula. |
| What are the actions of the upper trapezius? | Upper fibers:extend h & n, lat.flex head and neck to same side, rotate head and neck to opposite side, elev of scapula, upwardly rotate the scapula. |
| What are the actions of the middle and lower traps? | Middle: Add the scapula, stabilize the scapula. Lower: Depress of the scapula, upward rotates the scapula. |
| What is the origin of rhomboid minor? | Spinous processes of C7 – T1. |
| What is the origin of rhomboid major? | Spinous processes of T2 – T5. |
| What is the insertion of the rhomboid minor? | Upper portion of the scapula across from spine of the scapula |
| What is the insertion of rhomboid major? | Medial boarder of the scapula between the spine of the scapula and the inferior angle. |
| What are the actions of the rhomboids? | Adduct the scapula, elevate the scapula, downwardly rotate the scapula |
| What is the origin of the biceps? | Long head: supraglenoid tubercle of the scapulaShort Head: Corocoid process of scapula |
| What is the insertion of the biceps? | Tuberocity of the radius and aponeurosis of the biceps brachi. |
| What are the actions of the biceps? | Flex the elbow, forearm supination and flex the shoulder. |
| What is the origin of the triceps? | Long: Infragleniod tubercle of the scapulaLateral: Posterior surface of proximal ½ of the humerus.Medial: Posterior surface of distal ½ of the humerus. |
| What is the insertion of the triceps? | Olecronanon process of the ulna. |
| What are the actions of the triceps? | All: Extend the elbowLong: Extend the shoulder, adduct the shoulder |
| What is the origin of the QLs? | Posterior iliac crest. |
| What is the insertion of the QLs | Last rib and TVP’s of 1st – 4th lumbar vertebrae. |
| What are the actions of the QLs? | Laterally tilt the pelvis, laterally flex the vertebral column to same side, assist to extend the vertebral column bilaterally fix the last rib during inhalation. |
| What is the origin of the Glute Max? | Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroilliac ligaments. |
| What is the insertion of the Glute Max? | Lower fibers: Gluteal tuberocityUpper fibers: Illiotibial tract |
| What are the actions of the Glute Max? | All: Extend the hip, laterally rotate the hip, abduct the hip. Lower fibers: Adduct the hip |
| What is the origin of the rectus femoris? | AIIS |
| What is the insertion of the rectus femoris? | Tibial tuberosity. |
| What are the actions of the rectus femoris? | Extend the knee, flex the hip. |
| What is the origin of the biceps femoris? | The long head originates at the ishial tuberocity and the short head orginiates at the lateral lip of the linea aspera. |
| Where do the biceps femoris insert? | The head of the fibula. |
| What are the actions of the biceps femoris? | Flex the knee, laterally rotate the flexed knee, extend the hip, laterally rotate the hip, tilt the pelvis posterior. |
| What is the common origin of the adductor group? | The ramus of the pubis (inferior - magnus, brevis, and gracilis and superior - pectineus) |
| What is the insertion of the pectineus? | The pectineal line of the femur. |
| What is the origin of the sartorius? | ASIS |
| What is the insertion of the sartorius? | Proximal, medial shaft of the tibia at the pes anserinus tendon. |
| What are the actions of the sartorius? | (Creates the shape of 4) - flex the hip, laterally rotate the hip, abduct the hip, flex the knee, medially rotate the flexed knee. |
| What type of group is the piriformis in? | The lateral rotator of the hip group. |
| What is the origin of the piriformis? | Anterior surface of the sacrum. |
| What is the origin of the piriformis? | Anterior surface of the sacrum. |
| What is the insertion of the piriformis? | The greater trochanter. |
| What are the actions of the piriformis? | Laterally rotate the hip, abduct the hip when the hip is flexed. |
| What is the origin of the iliopsoas? | Psoas - The bodies and transverse processes of the lumbar vertabrae. Iliacus - illiac fossa. |
| What is the insertion of the ilipsoas? | Both the psoas and iliacus insert on the lesser trochanter |
| What is the origin of the gastrocs? | Condyles of the femur, posterior surfaces. |
| What is the insertion of the gastrocs? | Calcaneous via the calcaneal tendon. |
| What are the actions of the gastocs? | Flex the knee, plantar flex the ankle. |
| What is the origin of the soleus? | Soleal line, posterior surfaces of the tibia and trhe proximal posterior surface of the fibula. |
| What is the insertion of the soleus? | Calcaneous via the calcaneal tendon. |
| What is the origin of the sartorius? | The ASIS |
| What is the insertion of the sartorius? | The proximal medial shaft of the tibia at the pes anserinus tendon. |
| What is the direction of fibers of the sartorius? | forms a band from lateral hip to medial knee. |
| What is the origin of the tibialis anterior? | Proximal lateral surface of the tibia and the interosseus membrane |
| What is the insertion of the tibialis anterior? | Medial cuneiform and base of the first metatarsal |
| What is the direction of fibers? | from lateral superior tibia to medial foot and wrap around to the attachments underneath |
| What are the actions of the illiospoas? | Flex the hip, laterally rotate the hip and adduct the hip |
| What is the direction of fibers of the illiospoas? | from lumbar vertebrae and internal surface of the ilium to the lesser trochanter |
| What are the actions of the pectineus? | Adduct the hip, Medially rotate the hip, assist to flex the hip |
| Trace the sciatic nerve. | Out the L.S plexus, travels thru the greater sciatic notch, goes btw the ischial tub. and greater troch, then follows adductor magnus along the posterior thigh, innervating the hamstrings. At the popliteal fossa, it splits to the tibial and C.P nerves. |
| Describe what happens to the sciatic nerve after it splits. | The tibial nerve continues down the posterior calf innervating the gasctocnemius and soleus muscles, while the common peroneal nerve wraps around the head of the fibula and splits into superficial and deep, innervating the anterior calf. |
| Describe the pathway of the median nerve. | From the brachial plexus and travels thruthe upper arm to the cubital fossa where it travels between the heads of pronator teres, innerv.the flexors and pronators. It travels through the carpal tunnel innerv. the thenar eminence and 1st and 2nd lumbricals |
| Describe the nerve pathway for the radial nerve. | Leaves the brachial plexus and travels to the posterior arm. It is the only nerve that runs through the posterior arm, innervating the triceps, brachioradialis, supinator, and extensors of the forearm. |
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armigrrl
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