Lab Tuesday April USE THIS FOR THURSDAY

Abduction

Movement away from the midline of the body.

Adduction

Movement towards the midline of the body.

Diaphragm

Prime mover of inspiration; expands thoracic cavity during inhalation.

Pectoralis Minor

Deeper than pectoralis major; draws scapula forward/downward and elevates rib cage.

Pectoralis Major

Large fan-shaped muscle

Covers upper portion part of chest

Adducts arm flexes humerus

Rectus Abdominis

Compresses abdomen; aids in flexion and rotation of the lumbar region.

External Obliques

Superficial muscles that compress the abdomen and flex the vertebral body.

Internal Obliques

Deeper muscles that compress the abdomen and flex the vertebral body.

Transversus Abdominis

Assists in compressing the abdomen.

Rhomboids Major and Minor

Muscles that function to adduct the scapula.

External Intercostals

Muscles that aid in inspiration by lifting ribs and expanding the thoracic cavity.

Internal Intercostals

Muscles that aid in expiration by depressing the rib cage.

Serratus Anterior

Muscle that protracts the shoulder and rotates it upwards; known as the 'boxer's muscle'.

Infraspinatus

Muscle that facilitates lateral rotation of the humerus.

Subscapularis

Muscle responsible for medial rotation of the humerus.

Supraspinatus

Muscle that facilitates abduction of the shoulder.

Teres Major

Muscle that aids in medial rotation and extension of the humerus.

Trapezius

Muscle that assists with neck extension and scapula adduction.

Linea Alba

Connective tissue at midline of the abdomen; supports abdominal muscles.

Flexor Carpi Radialis

Muscle that flexes the wrist and aids in abduction of the hand.

Palmaris Longus

Muscle that flexes the wrist.

Extensor Carpi Ulnaris

Muscle that helps in wrist extension and aids in adduction of the hand.

Extensor Digitorum

Muscle responsible for the extension of fingers.