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OIANS EXAM STUDY SET WITH COMPLETE SOLUTIONS!!
What is the origin of the long head of the Biceps Brachii? - ANSWER Supraglenoidtubercle of scapula
What is the origin of the short head of the Biceps Brachii? - ANSWER Coracoid processof scapula
What is the insertion of the Biceps Brachii? - ANSWER Radial tuberosity and bicipitalaponeurosis
What are the actions of the Biceps Brachii? - ANSWER Flexes shoulder/elbow andsupinates forearm
What nerve innervates the Biceps Brachii? - ANSWER Musculocutaneous nerve What is the origin of the deltoid muscle? - ANSWER Spine of scapula, lateral 1/3 ofclavicle, acromion
What is the insertion point of the deltoid muscle? - ANSWER Deltoid tuberosity ofhumerus
What is the action of the anterior fibers of the deltoid muscle? - ANSWER Flex andmedially rotate the shoulder
What is the action of the posterior fibers of the deltoid muscle? - ANSWER Extend andlaterally rotate the shoulder
What is the action of all fibers of the deltoid muscle when contracting? - ANSWER
Abducts the shoulder What nerve innervates the deltoid muscle? - ANSWER Axillary nerve What is the origin of the diaphragm? - ANSWER Xiphoid process, costal margin,vertebral bodies L1-L
What is the insertion of the diaphragm? - ANSWER Central tendon of diaphragm What is the action of the diaphragm? - ANSWER Presses abdominal viscera inferiorly,increasing volume of thoracic cavity (inspiration)
What nerve innervates the diaphragm? - ANSWER Phrenic nerve (C3, 4, & 5 keep thediaphragm alive)
What is the origin of the gastrocnemius muscle? - ANSWER Lateral condyle of femur,medial condyle of femur
What is the insertion point of the gastrocnemius muscle? - ANSWER Calcaneus What are the actions of the gastrocnemius muscle? - ANSWER Knee flexion, plantarflexion of ankle
What nerve innervates the gastrocnemius muscle? - ANSWER Tibial nerve What is the origin of the rectus abdominis muscle? - ANSWER pubic bone, pubicsymphysis
What is the insertion point of the rectus abdominis muscle? - ANSWER xiphoid process,costal cartilages 5-
What is the origin of the long head of the Triceps Brachii? - ANSWER Infraglenoidtubercle of scapula
What is the origin of the lateral and medial heads of the Triceps Brachii? - ANSWERPosterior shaft of humerus
What is the insertion of the Triceps Brachii? - ANSWER Olecranon process What is the action of the Triceps Brachii? - ANSWER Extends forearm; long head helpsstabilize humerus in shoulder joint
What nerve innervates the Triceps Brachii? - ANSWER Radial nerve What is the origin of the frontalis muscle in the occipitofrontalis? - ANSWER Epicranialaponeurosis
What is the origin of the occipitalis muscle in the occipitofrontalis? - ANSWER Superiornuchal line
What is the insertion of the frontalis muscle in the occipitofrontalis? - ANSWERSubcutaneous tissue of eyebrows
What is the insertion of the occipitalis muscle in the occipitofrontalis? - ANSWEREpicranial aponeurosis
What is the action of the occipitofrontalis muscle? - ANSWER Wrinkles forehead andelevates eyebrows
What is the nerve supply of the occipitofrontalis muscle? - ANSWER Facial nerve (CNVII)
What is the origin of the sartorius muscle? - ANSWER Anterior superior iliac spine(ASIS)
What is the insertion point of the sartorius muscle? - ANSWER Medial surface ofproximal tibia
What are the actions of the sartorius muscle? - ANSWER Flexes, abducts, and laterallyrotates hip; flexes knee
What nerve innervates the sartorius muscle? - ANSWER Femoral nerve What is the origin of the serratus anterior muscle? - ANSWER Surface of 1st-8th ribs atside of chest
What is the insertion of the serratus anterior muscle? - ANSWER Anterior aspect ofentire medial border of scapula
What is the action of the serratus anterior muscle? - ANSWER Protracts scapula What nerve innervates the serratus anterior muscle? - ANSWER Long thoracic nerve
