. . Movement of the forearm at the proximal ulnar and radius is known as which o

Question

. . Movement of the forearm at the proximal ulnar and radius is known as which of the following?

A. pronation

B. ulnar deviation

C. radial deviation

D. all of the above

25. The large range of movement of the shoulder compared to that of the elbow is derived from the structure of which of the following?

A. the shoulder 's glenohumeral joint

B. the

humeroulnar joint

C. the scapulo - humeral rhythm

D. both A and C

E. all of the above

. Which of the following acts on more than 1 joint ?

A. biceps brachii B . brachialis C. deltoid D. teres major

. Where do the elbow flexors originate?

A. scapula

B. humerus

C. both A and B

D. radius

. which of the following muscles is not involved in shoulder flexi on ?

A. deltoid

B. latissimus dorsi

C. pectoralis major

D. none of the above

. Which type of movement is permitted at the humeroulnar joint?

A. sagittal plane motion

B. flexion

C. pronation D. both A and B E. all of the above

Explanation / Answer

- Answer here is A-Pronation.

The hand is articulated with the Radius, it can be efficiently moved from palm-anterior position to a palm-anterior position by crossing the distal end of the Radius over the Ulna. This movement termed pronation, occurs solely in the forearm.

25)Answer here is D, means the  large range of movement of the shoulder derived from both the shoulders Glenohumeral joint and the scapulo humeral rhythm..

The movements at Glenohumeral joint include flexion, extension, abduction, addiction, medial rotation, lateral rotation, and circumduction.the external rotation of scapula brings the glenoid cavity more into the frontal plane and internal rotation turns glenoid cavity to the sagittal plane.

-Answer here is A) The biceps brachii - it is primarily a powerful flexor of the forearm at the elbow joint and powerful spinster in the forearm. Because both heads originate from the scapula, the muscle also acts as an accessory flexor of the arm at Glenohumeral joint.

-Answer here is C-elbow flexors originate from both scapula and humerus. BICEPS BRACHI- originates from scapula

BRACHIALIS-originates from humerus

Brachioradialis- originates from humerus.

-Answer here is B) Lattissimus Dorsi- addiction,

medial rotation, and extension of the arm at the Glenohumeral joint. Not flexion.

-Answer here is B) Flexion, the humero ulnar joint permits only flexion and extension of the forearm on the arm.

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