Shoulder, Chest, Arm, Stomach, Back Muscles in the Upper Extremity

Shoulder Muscles Trapezius Deltoid Rotator Cuff

Trapezius (Traps) Function: Raises head and shoulders Origin: back of the neck and upper vertebrate Insertion: clavicle and scapula

Deltoid (Delts) Function: Raises the arm Origin: the spine of the scapula and the clavicle Insertion: the top of the humerus

Rotator Cuff Known of the SITS muscles S - Superspiatus I - Infraspinatus T - Teres Minor S - Subscapularis

Back Rhomboids Latissimus Dorsi Erector Spinae Quadratus Lumborium

Rhomboids Function: (deep muscle) extends the scapula (under the teres major) Origin: thoracic vertebrae Insertion: front of scapula

Latissimus Dorsi (Lats) Function: moves the arm backward Origin: lumbar vertebrae Insertion: humerus

Erector Spinae Function: straightens the back Origin: lower thoracic vertebrae and top of pelvis Insertion: back of ribs and upper thoracic vertebrae

Quadratus Lumborum Function: Elevates the hip and abducts the hip Origin: back of ribs and upper thoracic Insertion: vertebrae lower thoracic vertebrae and top of pelvis

Chest Muscles Pectoralis Major Pectoralis Minor Serratus Anterior

Pectoralis Major (Pecs) Function: Moves the arm across the chest Origin: sternum and clavicle Insertion: medial and lateral top of the humerus

Pectoralis Minor Function: Moves the arm from a raised position down across the chest to the opposite hip Origin: coricoid process of the scapula Insertion: 3 rd, 4 th and 5 th ribs

Serratus Anterior Function: Moves the scapula forward Origin: upper ribs / side of the ribs Insertion: scapula

Quiz 1. Name one of the two parts of muscle. 2. The place where a muscle is anchored is called what? 3. The temporalis and the masseter work together to perform what function? 4. Name two of the six muscles of the shoulder and back. 5. What muscle group works in a pair with your Lats (Latissimus Dorsi)?

Quiz/Review 1. Name one of the two parts of muscle. Tendon, Belly 2. The place where a muscle is anchored is called what? Origin 3. The temporalis and the masseter work together to perform what function? Move the lower jaw 4. Name two of the muscles of the shoulder and back. Traps, Delts, Rotator cuff, Lats, Erector Spinae, Rhomboids 5. What muscle group works in a pair with your Lats (Latissimus Dorsi)? Pecs (Pectoralis Major)

Arm Muscles Biceps Triceps Brachioradialis Flexor Carpi Extensor Carpi

Biceps Function: flexes arm (anterior) Origin: side of the scapula Insertion: radius/ulna

Triceps Function: extends/straightens arm (posterior) Origin: side of the scapula and the humerus Insertion: upper ulna

Brachioradialis Function: flexes the elbow Origin: lateral epicondyle of humerus Insertion: radius

Flexor Carpi Function: Closes the hand and fingers and flexes the wrist (anterior) Origin: medial epicondyle of humerus Insertion: metacarpals

Extensor Carpi Function: Opens the hand and fingers and extends the wrist (posterior) Origin: lateral epicondyle of humerus Insertion: metacarpals

Stomach & Abdomen Rectus Abdominis Abs External Obliques Internal Obliques

Rectus Abdominis Function: flexes trunk of the body & pulls ribs to pelvis Important for posture Origin: front of pelvis Insertion: front of ribs

Obliques External Oblique: flexes the trunk of the body and twists torso Origin: lower ribs Insertion: top of pelvis Internal Oblique: Same as external, except a deeper set of muscles