Health Science: Muscles of the Upper Extremities

upper back- supports

the arm and scapula

stabilization. Helps to adduct the

shoulder.

• Trapezius

• Deltoid

• Biceps Brachi

• Triceps Brachi

helps lift (abduct) the

upper arm.

• Pectoralis Major

• Deltoid

• Triceps Brachi

• Brachioradialis

-chest muscles,

assist with arm movements and

motion

• Triceps Brachi

• Biceps Brachi

• Pectoralis Major

• Trapezius

Biceps Brachi

• posterior upper

  arm. Extends the elbow.

• Anterior upper

  arm, flexes the elbow toward

  the forearm.

• helps lift (abduct) the

  upper arm.

• Anterior lower

  arm, flexes the wrist toward the

  forearm.

Triceps Brachi

• Anterior lower

  arm, flexes the wrist toward the

  forearm.

• chest muscles,

  assist with arm movements and

  motion

• posterior upper

  arm. Extends the elbow.

• upper back- supports

  the arm and scapula

Brachioradialis

• Anterior lower

  arm, flexes the wrist toward the

  forearm.

• helps lift (abduct) the

  upper arm.

• Anterior upper

  arm, flexes the elbow toward

  the forearm.

• posterior upper

  arm. Extends the elbow.