deltoideus muscle

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Illustration of the human neck showing labeled muscles, arteries, veins, and bones, including the sternocleidomastoid, digastric, mylohyoid, trapezius, carotid artery, jugular vein, clavicle, and thyroid cartilage.

An anatomical illustration of the human upper limb and chest from the front, showing labeled muscles such as the deltoid, pectoralis major, biceps, triceps, and serratus anterior, along with the cephalic vein and thoracoacromial artery.

An anatomical illustration of the human torso highlighting the muscles of the abdominal wall, with labeled structures including the deltoid, pectoralis major, serratus anterior, latissimus dorsi, external and internal oblique, rectus abdominis, and associated connective tissues.

Illustration of the human back showing labeled muscles including trapezius, deltoid, latissimus dorsi, erector spinae, rhomboids, and gluteus maximus, with detailed anatomical structure.

Detailed anatomical illustration of the human upper arm from the front, showing the superficial muscles, major nerves, and tendons. Key structures like the deltoid, biceps brachii, brachialis, and associated nerves are labeled.

Illustration of the human upper arm from a posterior view, showing labeled muscles and nerves including the triceps brachii, deltoid, supraspinatus, infraspinatus, and several forearm extensor muscles.

Posterior anatomical illustration of the human muscular system showing major back, arm, and leg muscles labeled, including trapezius, latissimus dorsi, gluteus maximus, and gastrocnemius.

deltoideus muscle: Media

anatomy

Videos

proteins

proteins

How proteins build muscle.

Video: © American Chemical Society (A Britannica Publishing Partner)

Images

Illustration of the human neck showing labeled muscles, arteries, veins, and bones, including the sternocleidomastoid, digastric, mylohyoid, trapezius, carotid artery, jugular vein, clavicle, and thyroid cartilage.

muscles of the neck; human muscle system

Muscles of the neck.

Encyclopædia Britannica, Inc.

An anatomical illustration of the human upper limb and chest from the front, showing labeled muscles such as the deltoid, pectoralis major, biceps, triceps, and serratus anterior, along with the cephalic vein and thoracoacromial artery.

muscles of the shoulder; human muscle system

Muscles of the shoulder.

Encyclopædia Britannica, Inc.

An anatomical illustration of the human torso highlighting the muscles of the abdominal wall, with labeled structures including the deltoid, pectoralis major, serratus anterior, latissimus dorsi, external and internal oblique, rectus abdominis, and associated connective tissues.

muscles of the abdominal wall

Muscles of the abdominal wall.

Encyclopædia Britannica, Inc.

Illustration of the human back showing labeled muscles including trapezius, deltoid, latissimus dorsi, erector spinae, rhomboids, and gluteus maximus, with detailed anatomical structure.

muscles of the back; human muscle system

Muscles of the back.

Encyclopædia Britannica, Inc.

Detailed anatomical illustration of the human upper arm from the front, showing the superficial muscles, major nerves, and tendons. Key structures like the deltoid, biceps brachii, brachialis, and associated nerves are labeled.

Human muscle system

Muscles of the upper arm.

Encyclopædia Britannica, Inc.

Illustration of the human upper arm from a posterior view, showing labeled muscles and nerves including the triceps brachii, deltoid, supraspinatus, infraspinatus, and several forearm extensor muscles.

arm muscles

Muscles of the upper arm (posterior view).

Encyclopædia Britannica, Inc.

Posterior anatomical illustration of the human muscular system showing major back, arm, and leg muscles labeled, including trapezius, latissimus dorsi, gluteus maximus, and gastrocnemius.

human muscular system: posterior view

Posterior view of human muscular system.

Encyclopædia Britannica, Inc.

Interactives

The Human Body

The Human Body

Experience the major systems of the human body.

Encyclopædia Britannica, Inc.

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