Muscles of the back. 1, trapezius; 2, its origin; 3, spine of scapula; 4, latissimus dorsi; 5, delltoid; 6, infra-spinatus; 7, external oblique; 8, gluteus medius; 9, gluteus maximus; 10, levator scapulae; 11, rhomboideus minor; 12, rhomboideus major; 13, splenius capitus; 14, splenius colli; 15, origin latissimus dorsi; 16, serratus inferior posticus; 17, supra-rpinatus; 18, infra-pinatus; 19, teres minor; 20, teres major; 21, long head triceps; 22, serratus major anticus; 23, internal oblique.

Back Muscles

Muscles of the back. 1, trapezius; 2, its origin; 3, spine of scapula; 4, latissimus dorsi; 5, delltoid;…

Muscles of the back. Labels: 50, latissimus dorsi; 51, trapezius; 52, deltoid. The muscles of the back are in 5 layers, one beneath another. The two largest and most superficial are the trapezius and the latissimus dorsi.

Muscles of the Human Back

Muscles of the back. Labels: 50, latissimus dorsi; 51, trapezius; 52, deltoid. The muscles of the back…

Second layer of muscles of the back. Labels: 1, trapezius; 2, a portion of the ten dinous ellipse formed by the trapezius on both sides; 3, spine of scapula; 4, latissimus dorsi; 5, deltoid; 6, infra-spinatus and teres minor; 7, external oblique; 8, gluteus medius; 9, gluteus magnus; 10, levator scapulae; 11, rhomboideus minor; 12, rhomboideus major; 13, splenius capitis; 14, splenius colli; 15, portion of origin of latissimus dorsi; 16, serratus inferior posticus; 17, supra-spinatus; 18, infra-spinatus; 19, teres minor; 20, teres major; 21, long head of triceps extensor cubiti; 22, serratus major anticus; 23, internal oblique.

Muscles of the Back

Second layer of muscles of the back. Labels: 1, trapezius; 2, a portion of the ten dinous ellipse formed…

Muscles of the back. On the left side is exposed the first layer; on the right side, the second layer and part of the third.

Back Muscles

Muscles of the back. On the left side is exposed the first layer; on the right side, the second layer…

The superficial muscles of the back.

Superficial Muscles of the Back

The superficial muscles of the back.

A frontal view of the chest muscles. 1, sterno-hyoid; 2, sterno-mastoid; 3, sterno-thyroid; 4, sterno-mastoid; 5, trapezius; 6, clavicle; 7, origin pectoralis major; 8, deltoid; 9, lower edge pectoralis major; 10, middle pectoralis major; 11, fibres external oblique; 12, biceps; 13, teres major; 14, serratus major anticus; 15, external oblique interlocking with serratus major.

Chest Muscles

A frontal view of the chest muscles. 1, sterno-hyoid; 2, sterno-mastoid; 3, sterno-thyroid; 4, sterno-mastoid;…

Muscles of the upper body.

Muscles

Muscles of the upper body.

Muscles of the arm

Arm Muscles

Muscles of the arm

Muscles of the arm.

Arm Muscles

Muscles of the arm.

Muscles of the back.

Back Muscles

Muscles of the back.

Muscles of the neck.

Neck Muscles

Muscles of the neck.

Anterior view of the muscles of the neck.

Anterior View of the Neck Muscles

Anterior view of the muscles of the neck.

The region of the neck, from in front.

Front View of Neck

The region of the neck, from in front.

The triangles of the neck.

Triangles of the Neck

The triangles of the neck.

Sagittal section through left shoulder and left lung.

Sagittal Section Through Shoulder and Lung

Sagittal section through left shoulder and left lung.

Sagittal section through left shoulder, lung, and apex of the heart.

Sagittal Section Through Shoulder and Lung

Sagittal section through left shoulder, lung, and apex of the heart.

Shown are the muscles of the deltoid region and back of the arm

Back View of Shoulder Muscles

Shown are the muscles of the deltoid region and back of the arm

Shown are the muscles of the posterior wall of the axilla and the front of the arm (the biceps being divided).

Front View of Shoulder Muscles

Shown are the muscles of the posterior wall of the axilla and the front of the arm (the biceps being…

Superior muscles of the upper front of the trunk. Labels: 1, sterno-hyoid; 2, sterno-cleido-mastoid; 3, sterno-thyroid; 4, sterno-cleido-mastoid; 5, edge of the trapezius; 6, clavicle; 7, clavicular origin of the pectoralis major; 8, deltoid; 9, fold of the pectoralis major of the anterior edge of the axilla; 10, middle of the pectoralis major; 11, crossing and interlocking of the fibers of the external oblique of one side with those of the other; 12, biceps flexor cubiti; 13, teres major; 14, serratus major anticus; 15, superior heads of external oblique interlocking with serratus major.

Muscles of the Upper Trunk

Superior muscles of the upper front of the trunk. Labels: 1, sterno-hyoid; 2, sterno-cleido-mastoid;…