Flexor carpi ulnaris
Wrist flexor that follows the ulna.
Extensor digitorum
Muscle that extends the fingers.
Flexor digitorum superficialis
Muscle that flexes the fingers.
Biceps brachii
Muscle that allows you to bend (flex) the elbow.
Deltoid
Powerful shoulder abductor, used to raise the arm overhead.
Iliopsoas
Hip flexor, deep in pelvis; a composite of 2 muscles.
Gluteus maximus
Used to extend the hip when climbing stairs.
Gastrocnemius
Toe dancer's" muscle; a 2-bellied muscle of the calf.
Tibialis anterior
Inverts and dorsiflexes the foot.
Adductors
Muscle group that allows you to draw your legs to the midline of your body, as when standing at attention.
Quadriceps
Muscle group that extends the knee.
Hamstrings
Muscle group that extends the thigh and flexes the knee.
Gluteus medius
Smaller hip muscle commonly used as an injection site.
Fibularis muscles
Muscle group of the lateral leg; plantar flex and evert the foot.
Sartorius
Straplike muscle that is a weak thigh flexor; the "tailor's muscle".
Soleus
Like the 2-bellied muscle that lies over it, this muscle is a plantar flexor.
Rectus abdominis
The name means "straight muscle of the abdomen".
Pectoralis major
Prime mover for shoulder flexion and adduction.
Deltoid
Prime mover for shoulder abduction.
External oblique
Part of the abdominal girdle; forms the external lateral walls of the abdomen.
Sternocleidomastoid
Acting alone, each muscle of this pair turns the head toward the opposite shoulder.
External intercostal
Deep muscles of the thorax that promote the inspiratory phase of breathing.
Diaphragm
Muscular partition that separates the thoracic cavity from the abdominal cavity and aids in respiration by moving up and down.
Zygomaticus
Used in smiling.
Buccinator.
Used to suck in your cheeks.
Orbicularis oculi
Used in winking.
Frontalis
Used to form the horizontal frown crease on the forehead.
Orbicularis oris
The "kissing" muscle.
Masseter
Prime mover of jaw closure.
Temporalis
Synergist muscle for jaw closure.
Sternocleidomastoid
Prime mover of head flexion; a 2-headed muscle.