Muscular System Final Review Human Anatomy & Physiology

Epicranius MasseterZygomaticus Buccinator Orbicularis oris Platysma Temporalis Sternocleidomastoid Occipital bone/skin and muscles around the eye Raises eyebrows Closes eye Raises corner of mouth Compresses cheeks inward Closes and protrudes lips Draws angle of mouth down Elevates mandible Sternum & Clavicle/Mastoid process of temporal bone Pulls head to one side, pulls head toward chest Orbicularis oculi

Epicranius O/I - Orbicularis oculi A. Masseter A. Zygomaticus A. Buccinator A. Orbicularis oris A. Platysma A. Temporalis A. Sternocleidomastoid O/I - Occipital bone/skin and muscles around the eye A. Closes eye Raises corner of mouth Compresses cheeks inward Closes and protrudes lips Draws angle of mouth down Elevates mandible Sternum & Clavicle/Mastoid process of temporal bone A. O/I = origin and insertion A. = action Pulls head to one side, pulls head toward chest Raises eyebrows Muscles Buccinator Epicranius Masseter Orbicularis oculi Orbicularis oris Platysma Sternocleidomastoid Temporalis Zygomaticus Origins/Insertions Occipital bone/skin & muscles around the eye Sternum & Clavicle/Mastoid process of temporal bone Actions Closes and protrudes lips Closes eye Compresses cheeks inward Draws angle of mouth down Elevates mandible (X2) Pulls head to one side Raises corner of mouth Raises eyebrows

Levator scapulae Elevates scapula Abducts arm Infraspinatus Rotates arm laterally Teres minor Rotates arm laterally Teres major Extends humerus or adducts and rotates arm medially Rhomboid major Raises and adducts scapula Trapezius Deltoid Acromion process, spine of scapula, and clavicle/deltoid tuberosity of humerus Abducts arm, extends or flexes humerus Latissimus dorsi Supraspinatus

Levator scapulae A. Elevates scapula Abducts arm Infraspinatus A. Rotates arm laterally Teres minor A. Rotates arm laterally Teres major A. Extends humerus or adducts and rotates arm medially Rhomboid major A. Raises and adducts scapula Trapezius Deltoid O/I - Acromion process, spine of scapula, and clavicle/deltoid tuberosity of humerus A. Abducts arm, extends or flexes humerus Latissimus dorsi Supraspinatus A. Muscles Deltoid Infraspinatus Latissimus dorsi Levator scapulae Rhomboid major Supraspinatus Teres major Teres minor Trapezius Actions Abducts arm Abducts arm, extends or flexes humerus Adducts and rotates arm medially Elevates scapula Raises and adducts scapula Rotates arm laterally (X2) Origins/Insertions Acromion process, spine of scapula and clavicle/deltoid tuberosity of humerus

Levator scapulae Supraspinatus Infraspinatus Deltoid Teres minor Teres major Triceps brachii Extends forearm at the elbow

Levator scapulae Supraspinatus Infraspinatus Deltoid Teres minor Teres major Triceps brachii A. Extends forearm at the elbow Muscles and Actions Deltoid Extends forearm at the elbow Infraspinatus Levator scapulae Supraspinatus Teres major Teres minor Triceps brachii

Trapezius Pectoralis major Pulls arm anteriorly and across chest, rotates humerus or adducts arm External oblique Sternocleidomastoid Pectoralis minor Pulls scapula anteriorly and downward or raises ribs Serratus anterior Rectus abdominis Crest of pubis and symphysis pubis/xiphoid process of sternum and costal cartilage Tenses abdominal wall and compresses abdominal contents; also flexes vertebral column Transverse abdominis

Trapezius Pectoralis major A. Pulls arm anteriorly and across chest, rotates humerus or adducts arm External oblique Sternocleidomastoid Pectoralis minor A. Pulls scapula anteriorly and downward or raises ribs Serratus anterior Rectus abdominis O/I - Crest of pubis and symphysis pubis/xiphoid process of sternum and costal cartilage A. Tenses abdominal wall and compresses abdominal contents; also flexes vertebral column Transverse abdominis Muscles External oblique Pectoralis major Pectoralis minor Rectus abdominis Serratus anterior Sternocleidomastoid Transverse abdominis Trapezius Origins/Insertions & Actions Crest of pubis and symphysis pubis/xiphoid process of sternum and costal cartilage Pulls arm anteriorly and across chest, rotates humerus or adducts arm Pulls scapula anteriorly and downward or raises ribs Tenses abdominal wall and compress abdominal contents; also flexes vertebral column

Trapezius Deltoid Subscapularis Coracobrachialis Biceps brachii Brachialis Rotates arm medially Flexes and adducts arm Flexes forearm at elbow Flexes forearm at elbow and rotates hand laterally Coracoid process of scapula/shaft of humerus

Trapezius Deltoid Subscapularis A. Coracobrachialis O/I - Biceps brachii A. Brachialis A. Rotates arm medially Flexes and adducts arm Flexes forearm at elbow Flexes forearm at elbow and rotates hand laterally Coracoid process of scapula/shaft of humerus A. Muscles Biceps brachii Brachialis Coracobrachialis Deltoid Subscapularis Trapezius Origins/Insertions & Actions Coracoid process of scapula/shaft of humerus Flexes and adducts arm Flexes forearm at elbow Flexes forearm at elbow and rotates hand laterally Rotates arm medially

Pronator teres Supinator Brachioradialis Pronator quadratus Rotates forearm medially Rotates forearm laterally Rotates forearm medially Flexes forearm at elbow

Pronator teres A. Supinator A. Brachioradialis A. Pronator quadratus A. Rotates forearm medially Rotates forearm laterally Rotates forearm medially Flexes forearm at elbow Muscles Brachioradialis Pronator quadratus Pronator teres Supinator Actions Flexes forearm at elbow Rotates forearm laterally Rotates forearm medially (X2)

Brachioradialis Triceps brachii

Brachioradialis Triceps brachii Muscles Brachioradialis Triceps brachii

Psoas major Iliacus Adductor longus Adductor magnus Vastus medialis Rectus femoris Vastus lateralis Adducts, extends, and rotates thigh laterally Adducts, flexes, and rotates thigh laterally Flexes thigh Flexes leg and thigh, abducts thigh, rotates thigh laterally, and rotates leg medially Extends leg at knee Anterior superior iliac spine/medial surface of tibia Sartorius

Psoas major A. Iliacus A. Adductor longus A. Adductor magnus A. Vastus medialis A. Rectus femoris A. Vastus lateralis A. Adducts, extends, and rotates thigh laterally Adducts, flexes, and rotates thigh laterally Flexes thigh Flexes leg and thigh, abducts thigh, rotates thigh laterally, and rotates leg medially Extends leg at knee Anterior superior iliac spine/medial surface of tibia A. Sartorius O/I - Muscles Adductor longus Adductor magnus Iliacus Psoas major Rectus femoris Sartorius Vastus lateralis Vastus medialis Origins/Insertions & Action Adducts, extends, and rotates thigh laterally Adducts, flexes and rotates thigh laterally Anterior superior iliac spine/medial surface of tibia Extends leg at knee (X3) flexes leg and thigh, abducts thigh, rotates thigh laterally and rotates leg medially Flexes thigh (X2)

Gluteus medius Lateral surface of ilium/greater trochanter of femur Abducts and rotates thigh medially Rectus femoris Vastus lateralis Gluteus maximus Extends thigh Biceps femoris Flexes leg, extends thigh

Gluteus medius O/I - Lateral surface of ilium/greater trochanter of femur A. Abducts and rotates thigh medially Rectus femoris Vastus lateralis Gluteus maximus A. Extends thigh Biceps femoris A. Flexes leg, extends thigh Muscles Bicepts femoris Gluteus maximus Gluteus medius Rectus femoris Vastus lateralis Origins/Insertions & actions Abducts and rotates thigh medially Extends thigh Flexes leg, extends thigh Lateral surface of ilium/greater trochanter of femur

Gluteus medius Gluteus maximus Biceps femoris Semitendinosus Flexes leg, extends thigh Semimembranosus Flexes leg, extends thigh

Gluteus medius Gluteus maximus Biceps femoris Semitendinosus A. Flexes leg, extends thigh Semimembranosus A. Flexes leg, extends thigh Muscles & Actions Biceps femoris Flexes leg, extends thigh (X2) Gluteus maximus Gluteus medius Semimembranosus Semitendinosus

Gastrocnemius Soleus Fibularis longus Plantar flexion and eversion of foot; also supports arch Tibialis anterior Dorsiflexion and inversion of foot

Gastrocnemius Soleus Fibularis longus A. Plantar flexion and eversion of foot; also supports arch Tibialis anterior A. Dorsiflexion and inversion of foot Muscles and Actions Dorsiflexion and inversion of foot Fibularis longus Gastrocnemius Plantar flexion and eversion of foot; also supports arch Soleus Tibialis anterior

Gastrocnemius Lateral and medial condyles of femur/posterior surface of calcaneus Plantar flexion of foot and flexion of leg at knee Soleus Plantar flexion of foot

Gastrocnemius O/I - Lateral and medial condyles of femur/posterior surface of calcaneus A. Plantar flexion of foot and flexion of leg at knee Soleus A. Plantar flexion of foot Muscles, Origins/Insertions & Actions Gastrocnemius Lateral and medial condyles of femur/posterior surface of calcaneus Plantar flexion of foot Plantar flexion of foot and flexion of leg at knee Soleus

Vastus lateralis Tibalis anterior Fibularis longus Gastrocnemius Soleus

Vastus lateralis Tibalis anterior Fibularis longus Gastrocnemius Soleus Muscles Fibularis longus Gastrocnemius Soleus Tibialis anterior Vastus lateralis

Good Luck on the Final Muscles Test!!!