Upper Limb 1
A patient that was recently treated for a dislocation of the humerus at the glenohumeral joint returns to report that he’s having difficulty doing activities that involve raising the previously injured arm.
Which nerve is most likely injured?
Axillary nerve
Which cervical roots contribute to the long thoracic nerve?
C5-C7
What nerve innervates the 1st lumbrical of the foot?
Lateral plantar n.
The relaxation of what ligament can cause pes planus?
Calcaneonavicular (spring) ligament
What is the cranial exit for CN VII?
Internal acoustic meatus
What nerve roots contribute to arm abduction?
C5 and C6
What two arteries arise from the first of the final three branches of the subclavian artery?
Thoracodorsal and circumflex scapular aa.
This nerve innervates the muscles that primarily assist with the standing phase of gait.
Superior gluteal
A patient with a deep knife wound in the buttock walks with a waddling gait that is characterized by the pelvis falling toward one side at each step. Which nerve is most likely damaged?
Superior gluteal
Which cranial nerve(s) pass through the superior orbital fissure? Be specific.
CN III, IV, V1 (ophthalmic division of trigeminal), VI
What nerve AND vein are found in the cubital fossa?
Median nerve and median cubital vein
The "ok" sign is used to test the integrity of which nerve?
Median nerve
What muscles contribute to the Achilles (calcaneal) tendon?
Gastrocnemius, soleus, plantaris
A patient is unable to prevent anterior displacement of the femur on the tibia when the knee is flexed. Which ligament is most likely damaged?
Posterior cruciate ligament
This muscle is the anterior and posterior border of the submandibular triangle of the neck.
Digastric
Which carpal bone is located most laterally in the proximal row of carpal bones?
Scaphoid
Also known as “nursemaid’s elbow”, what injury results from a sudden jerk of a pronated forearm in children under 5?
Radial head subluxation
What muscle attaches to the lower trochanter? What is the primary action of this muscle?
Iliopsoas; hip flexion
What is the nerve and blood supply to the lateral compartment of the leg?
Nerve: superficial fibular
Artery: perforating branches of anterior tibial and fibular arteries
The spinal cord terminates as what structure?
Conus medullaris
Name the three nerves that come off the medial cord.
Medical pectoral n., medial cutaneous n. to arm., medial cutaneous n. to forearm
The axillary artery is occluded; what arteries anastomose with the circumflex scapular artery to supply the upper limb?
What are the five actions of sartorius?
Hip flexion, external rotation, and abduction.
Knee flexion and internal rotation.
Obturator n.
Which cranial nerve innervates the muscles of mastication?
V3 (mandibular division of trigeminal)