Muscles Of The Upper Limb 2

1. Name: Origin:Insertion:Action:

Name: Extensor digitorumOrigin: Lateral epicondyle of humerusInsertion: Distal phalanges of fingersAction: Extends fingers and wrist.

Name: Biceps brachiiOrigin: Coracoid process of scapulaInsertion: Radial tuberosityAction: Flexes forearm at elbow and supinates forearm.

Name: DeltoidOrigin: Clavicle and scapulaInsertion: Deltoid tuberosity of humerusAction: Abducts shoulder.

Name: Flexor carpi radialisOrigin: Medial epicondyle of humerus Insertion: Bases of 2nd and 3rd metacarpalAction: Flexes and abducts hand at wrist

The correct answer provided all the details about the muscle including its name, origin, insertion, and action. The three incorrect answers provided details of other muscles with different origins, insertions, and actions, leading to their incorrect classification. It is crucial to accurately identify the muscle based on the given information.

Explanation

The correct answer provided all the details about the muscle including its name, origin, insertion, and action. The three incorrect answers provided details of other muscles with different origins, insertions, and actions, leading to their incorrect classification. It is crucial to accurately identify the muscle based on the given information.

2. Name: Extensor digiti minimi Origin: Lateral epicondyle of humerus Insertion: 5th metalcarpal-phalangeal Action:?

Abducts 5th metalcarpal

Flexes 5th metalcarpal

Name: Extensor digiti minimiOrigin: Lateral epicondyle of humerusInsertion: 5th metalcarpal-phalangealAction: extends 5th metalcarpal

Adducts 5th metalcarpal

The correct action of Extensor digiti minimi is to extend the 5th metalcarpal, not flex, abduct, or adduct.

Explanation

The correct action of Extensor digiti minimi is to extend the 5th metalcarpal, not flex, abduct, or adduct.

3. Name: Origin: Insertion: Action:

Name: Rectus femoris Origin: Anterior inferior iliac spine and acetabulum Insertion: Patella and tibial tuberosity Action: extends leg at knee

Name: Deltoid Origin: Clavicle, acromion, spine of scapula Insertion: Deltoid tuberosity of humerus Action: abducts arm at shoulder

Name: Extensor digitorumOrigin: Lateral epicondyle of humerusInsertion: distal phalanges 2-5Action: extends wrist and fingers

Name: Flexor carpi radialis Origin: Medial epicondyle of humerus Insertion: base of metacarpal 2-3 Action: flexes wrist

The correct answer is Extensor digitorum because it originates from the lateral epicondyle of the humerus and inserts into the distal phalanges of fingers 2-5 to extend the wrist and fingers. The incorrect answers are Flexor carpi radialis, Deltoid, and Rectus femoris, which have different origins, insertions, and actions compared to Extensor digitorum.

Explanation

The correct answer is Extensor digitorum because it originates from the lateral epicondyle of the humerus and inserts into the distal phalanges of fingers 2-5 to extend the wrist and fingers. The incorrect answers are Flexor carpi radialis, Deltoid, and Rectus femoris, which have different origins, insertions, and actions compared to Extensor digitorum.

4. Name: Extensor carpi radialis Origin: Lateral epicondyle of humerus Insertion: Base of 2nd & 3rd metacarpal Action:?

Rotates hand at wrist

Adducts hand at wrist

Flexes hand at wrist

Name: Extensor carpi radialisOrigin: Lateral epicondyle of humerusInsertion: Base of 2nd & 3rd metacarpalAction: extends and abducts hand at wrist

The correct action of the Extensor carpi radialis is to extend and abduct the hand at the wrist.

Explanation

The correct action of the Extensor carpi radialis is to extend and abduct the hand at the wrist.

5. Name: Origin: Insertion: Action:

Name: Flexor digitorum profundus Origin: Medial epicondyle of humerus Insertion: distal phalanges of digits 2-5 Action: flexes distal phalanges

Name: Flexor digitorum superficialisOrigin: Medial epicondyle of humerusInsertion: middle phalanges of digits 2-5Action: flexes middle phalanges

Name: Extensor digitorum superficialis Origin: Lateral epicondyle of humerus Insertion: distal phalanges of digits 2-5 Action: extends distal phalanges

Name: Extensor digitorum profundus Origin: Lateral epicondyle of humerus Insertion: distal phalanges of digits 2-5 Action: extends middle phalanges

The correct answer, Flexor digitorum superficialis, originates from the medial epicondyle of the humerus and inserts into the middle phalanges of digits 2-5 to flex them. The incorrect answers provided have variations in the name, origin, insertion, and action to create plausible distractors for the multiple-choice question.

Explanation

The correct answer, Flexor digitorum superficialis, originates from the medial epicondyle of the humerus and inserts into the middle phalanges of digits 2-5 to flex them. The incorrect answers provided have variations in the name, origin, insertion, and action to create plausible distractors for the multiple-choice question.

6. Name: Origin: Insertion: Action:

Name: Flexor digitorum profundusOrigin: medial and anterior surfaces of ulnaInsertion: base of distal phalanges 2-5Action: flexes distal phalanges

Name: Brachioradialis Origin: lateral supracondylar ridge of humerus Insertion: styloid process of radius Action: flexes forearm at elbow

Name: Extensor digitorum Origin: lateral epicondyle of humerus Insertion: distal phalanges of fingers 2-5 Action: extends fingers

Name: Extensor pollicis longus Origin: lateral epicondyle of humerus Insertion: base of distal phalanx of thumb Action: extends thumb

The correct answer is Flexor digitorum profundus as it is responsible for flexing the distal phalanges of fingers. The incorrect answers provided are for different muscles with varying origins, insertions, and actions.

Explanation

The correct answer is Flexor digitorum profundus as it is responsible for flexing the distal phalanges of fingers. The incorrect answers provided are for different muscles with varying origins, insertions, and actions.