What are the major muscles of the muscular system?

Answer 1

Femour muscle,calf mucle,

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The major muscles of the body would be:

A) Anterior Upper Body:

1. Pectoralis Major (involved with shoulder horizontal adduction and internal rotation)
2. Deltoid Anterior, Middle and Posterior Fibers (shoulder flexion, abduction , horizontal abduction respectively)
3. Rectus Abdominal (abs) (Flexion of the trunk)
4. Oblique Muscles (lateral rotation of the trunk and pelvis)

B) Posterior Upper Body:

1. Latismuss Dorsi (shoulder extension and external rotation)
2. Trapezius (Upper fibers raises the scapula upwards also involves with movement of the neck, while middle and lower fibers retract it)

C) Arms:

1. Biceps brachii (forearm flexion and supination, aids in shoulder flexion thru long head)
2. Triceps brachii (elbow extension)
3. Wrist Flexors and extensors

D) Pelvis and Hips:

1. Glutues Maximus ( Hip Extension)
2. Iliopsoas (Hip Flexion)
3. Tensor Fascia lata , Glutues Medius and Minus (Hip Abduction, Stabilize body during walking)
4. Hip Adductors
5. Rectus femoris and Quadriceps (Knee Extension, Rectus Femoris aids in Hip Flexion)
6. Hamstrings (Knee Flexion, Biceps Femoris aids in Hip Extension)
7. Calf Muscles (mainly Gastrocnemius involved in ankle planter flexion)

although there are many other skeletal muscles with major functions (e.g Rotator cuff: stabilize shoulder joint , and Anconeus which stabilize elbow joint.. and many more) these ones above are considered the major muscles of the body by many

Answer 2

The main muscles are the biceps, triceps, abs, ham string, quadriceps, and glutes.

Answer 3

the major muscles in the muscular system are skeletal muscle,smooth muscle,and the cardiac muscle