The action that moves the scapula towards the head is called: |
Elevation |
Which movement results after the contraction of the serratus anterior muscle? |
Scapular protraction and rotation |
Which movement is not associated with the scapula? |
Opposition |
The two heads of the biceps brachii muscle converge distally to insert on the: |
Radial tuberosity |
The coracobrachialis muscle originates on the: |
Coracoid process of the scapula |
The posterior scapular muscle that crosses the glenohumeral joint is the: |
Teres major |
The __________ is a prime mover of the glenohumeral joint during flexion. |
Deltoid |
Which of the following muscles assists during extension of the glenohumeral joint, but is not as a prime mover? |
Teres major |
Without lateral rotation of the humerus by the teres minor and infraspinatus muscles, the maximum angle of abduction by the deltoid would be __________. |
90 degrees |
Abduction requires the action of two muscles, and adduction requires the action of ___________. |
Four muscles |
Which muscle is not part of the rotator cuff? |
Teres major muscle |
Downward dislocation of the humerus from the glenohumeral joint when carrying weight is prevented by the __________. |
Supraspinatus muscle |
The angle of which muscle prevents the humeral head from sliding upward out of the joint as the arm is raised? |
Subscapularis |
The rotator cuff is a term used to describe the group of muscles and tendons that stabilize and reinforce the __________. |
Glenohumeral joint |
All the tendons of the rotator cuff muscles combine at which location? |
Humeral head |
To keep the humeral head centered within the glenoidal cavity the rotator cuff muscles must be __________. |
Located in the same plane |
The location of the rotator cuff muscles in relation to the glenohumoral joint minimizes the upward pressure against the __________. |
Acromion of the scapula |
The muscles that extend the forearm are located __________. |
Posteriorly |
Which of the following statements about muscles of the elbow joint is true? |
None of these statements is correct. |
The two heads of the biceps brachii muscle come together distally to insert on the __________. |
Radial tuberosity |
The smallest of the posterior extensors of the elbow joint is the __________. |
Anconeus |
The origin of the long head of the triceps brachii is on the __________. |
Infraglenoid tubercle of the scapula |
The muscle that generates the most power during elbow flexion is the __________. |
Brachialis |
The prime mover of elbow extension is the __________. |
Triceps brachii |
Which of the following statements about muscles of the forearm is true? |
The pronator teres originates on the medial epicondyle and inserts on the radius. |
Forearm supination is assisted by the __________. |
Biceps brachii |
An origin of the supinator is the __________. |
Lateral epicondyl of the humerus |
The interosseous membrane is located between the __________. |
Radius and ulna |
Which muscle of the wrist and fingers is a deep anterior flexor? |
Flexor pollicis longus |
Which superficial flexor muscle of the forearm is the most lateral? |
Flexor carpi radialis |
The palmaris longus inserts on the __________. |
Palmar aponeurosis |
Which muscle is a superficial anterior flexor muscle? |
Flexor digitorum superficialis |
The extensor muscle that branches to form four tendons on the back of the hand is the __________. |
Extensor digitorum |
The deep posterior extensor of the wrist and fingers __________. |
Controls the thumb and index finger |
Which deep posterior extensor of the wrist originates on the radius and ulna and interosseous membrane? |
The abductor pollicis longus |
The prime mover of wrist extension is the __________. |
Extensor digitorum |
Wrist abduction occurs through the actions of __________ muscles. |
Four |
The iliacus and the psoas major muscles are collectively known as the ____________ muscle because they share a common insertion on the __________ of the femur. |
Iliopsoas; lesser trochanter |
The lateral rotators act on the __________. |
Femur |
The piriformis originates on the __________ and inserts on the __________. |
Sacrum; greater trochanter of the femur |
The medial muscles of the hip joint that insert on the linea aspera are the __________. |
Adductor magnus, adductor brevis, and adductor longus |
The prime mover of hip extension is the __________. |
Gluteus maximus |
The tensor fascia latae is involved in hip __________. |
Abduction |
The anterior muscles of the thigh that originate on the os coxae are __________. |
Sartorius; rectus femoris |
The hamstring muscles originate on the __________. |
Ischial tuberosity |
To allow for flexion, the __________ unlocks the knee joint. |
Popliteus |
The two muscles that insert on the fifth phalanx or on the fifth metatarsal are the __________. |
Extensor digitorum longus and fibularis tertius |
The flexor hallucis longus muscle originates on the __________. |
Interosseous membrane |
The soleus and the gastrocnemius share an insertion on the __________. |
Calcaneus |
An insertion of the fibularis longus is the __________. |
Medial cuneiform |
The prime mover of dorsiflexion is the __________. |
Tibialis anterior |
Eversion of the foot is a function of the __________. |
Fibularis longus |
The most powerful movement at the ankle joint is __________, and the ________ is one of the prime movers of this movement. |
Plantar flexion; gastrocnemius |
A & P- The Muscular System
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