Question

Please check my answers

1.The biceps brachii muscle is the prime mover in the flexion of the elbow.

TRUE

2.The triceps brachii muscle is the antagonist in flexion of the elbow.

TRUE

3.The triceps brachii muscle is the prime mover in extension of the elbow.

TRUE

4. The biceps brachii muscle is the antagonist in extension of the elbow.

TRUE   

5. The gastrocnemius muscle inserts on the calcaneus via the calcaneal tendon (Achilles Tendon).

TRUE

6. The deltoid muscle inserts on the deltoid tuberosity of the humerus.

TRUE

7. The rectus femoris muscle forms part of the quadraceps femoris muscle of the anterior thigh.

       TRUE

8. The pectoralis major muscle originates on the ribs and sternum and inserts on the proximal humerus.

        FALSE- inserts in the coracoid process of the scapula

9. The frontalis muscle is superficial to the Frontal Bone.

TRUE

10. The trapezius muscle is a trapezoid-shaped muscle with origins on the vertebral column and scapula that is involved shoulder and head movements.

TRUE   

Answer 1

1. The biceps brachii muscle is the prime mover in the flexion of the elbow

It is false. Brachialis is the prime mover of elbow flexion. Though biceps brachii along with brachioradialis flexes the elbow but they are nit prime mover.

2.The triceps brachii muscle is the antagonist in flexion of the elbow.

It is true. Triceps is antagonist of biceps brachii and brachialis muscle,so it is anatgonist in elbow flexion.

3.The triceps brachii muscle is the prime mover in extension of the elbow.

It is true.

4.The biceps brachii muscle is the antagonist in extension of the elbow -

It is true. Biceps brachii is antagonist of triceps muscle,so it is anatgonist in elbow extension

5.The gastrocnemius muscle inserts on the calcaneus via the calcaneal tendon (Achilles Tendon) -

It is true. Both the heads i.e. lateral and medial inserts on the calcaneus via achilles tendon.

6. The deltoid muscle inserts on the deltoid tuberosity of the humerus -

It is true.

7. The rectus femoris muscle forms part of the quadraceps femoris muscle of the anterior thigh -

It is true. It is a bulk muscle that forms a part of quadriceps along with vastus lateralis, vastus medialis and vastus intermedius. Rectus femoris forms the superior anterior part of thigh.

8. The pectoralis major muscle originates on the ribs and sternum and inserts on the proximal humerus-  

It is false.

It has two heads - Clavicular head that originates from the anterior surface of the medial clavicle and Sternocostal head that originates from the anterior surface of the sternum, the superior six costal cartilages.

It inserts into the crest of greater tubercle of the humerus

9.  The frontalis muscle is superficial to the Frontal Bone-

It is true

10.The trapezius muscle is a trapezoid-shaped muscle with origins on the vertebral column and scapula that is involved shoulder and head movements-

It is true.