Muscles of the back and shoulder

What muscle is this?

• Deltoid
• Biceps brachii
• Trapezius
• Buccinator

The muscle that lies over the head of the humerus and abducts, flexes and extends the shoulder is the

• pectoralis major.

• deltoid.

• triceps brachii.

• biceps brachii.

• Latissmius Dorsi

• Erectors

• Deltoids

• Abdominal

Tags

NGSS.HS-LS1-2

• Latissimius Dorsi
• Trapezius
• Triceps
• Erectors

Tags

NGSS.MS-LS1-3

What muscle is responsible for extension of the neck and stabilizing the head?

• buccinator

• gluteals

• splenius

• frontalis

This set of muscles runs the entire length of the spine and functions to keep the spine and head upright.

• Erector Spinae

• Infraspinalis

• Supraspinatus

• Scalene

This very wide muscle functions in adductions and extension of the arm.

• latissimus dorsi

• trapezius

• levator scapulae

• subscapularis

This muscle appears square shaped. It attaches to the lumbar vertebrae and functions to abduct the vertebral column

• Quadratus Lumborum

• Psoas Major

• Semispinalis

• Erector Spinae

This group of 2 muscles attach to the medial side of the scapula and function to adduct the scapula.

• Rhomboid Major and Minor

• Teres Major and Minor

• Infra- and supra-spinatus

• Scalene anterior and posterior

This muscle starts on the mid-spine and attaches on the occipital bone. It functions in extending the head.

• Semispinalis

• Erector Spinae

• Trapezius

• Latissimus Dorsi