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Anatomy and Physiology II- Muscles

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Temporalis
Nerve: Trigeminal and mandibular
Location: Temporal bone
Action: Elevates mandible
Masseter
Nerve: Trigeminal and mandibular
Location: Zygomatic to mandible
Action: Chewing
Orbicularis Oris
Nerve: Facial nerve
Location: Around the mouth
Action: Open the mouth and close the mouth
Orbicularis Oculi
Nerve: Facial nerve
Location: Around the eye
Action: Open and close the eye
Inferior Rectus
Nerve: Oculomotor nerve
Location: inferior to the eyeball
Action: Look down
Medial Rectus
Nerve: Oculomotor nerve
Location: Inner part of the eye
Action: Move the eye inward
Superior Rectus
Nerve: Oculomotor nerve
Location: Above the eyeball
Action: Allow the eye to look up
Lateral Rectus
Nerve: Abducens nerve
Location: Outside portion of the eye
Action: Allow eye to look outward
Superior Oblique
Nerve: Trochlear Nerve
Location: Top of eyeball
Action: Move eye upward and rotate down
Inferior Oblique
Nerve: Oculomotor nerve
Location: Bottom of the eye
Action: Eye look down and rotate
Genioglossus
Nerve: Hypoglossal nerve
Location: Tongue
Action: Move the tongue
Sternocleidomastoid
Nerve: Accessory nerve
Location: Mastoid to the sternum
Action: Flex the neck and bend the neck
Multifundis
Nerve: Cervical, thoracic, and lumbar spinal nerves
Location: Intertwined in the spine
Action: Extends and rotates vertebral column
Levator Scapulae
Nerve: Cervical nerves, dorsal scapular*
Location: Posterior to scapula
Action: Elevate scapula
Pectoralis Minor
Nerve: Medial pectoralis nerve
Location: Chest
Action: Depress shoulder, downward rotate, elevate ribs
Rhomboid Major
Nerve: Dorsal scapular nerve
Location: Back near spinal cord
Action: Abducts scapula, performs rotation
Rhomboid Minor
Nerve: Dorsal scapular nerve
Location: Back near spinal cord and major
Action: Downward rotation of arm
Serratus Anterior
Nerve: Long thoracic nerve
Location: Interconnected in ribs
Action: Rotate scapula and protract shoulder
Trapezius
Nerve: Accessory nerve and cervial nerves
Location: Posterior near shoulder
Action: Rotate scapula, protract shoulder, extend neck
Supraspinatus
Nerve: suprascapular nerve
Location: Supraspinsous fossa of scapula
Action: Abduction to the shoulder
Infraspinatus
Nerve: Subscapular nerve
Location: Infraspinous fossa of scapula
Action: Lateral rotation of the shoulder
Teres Minor
Nerve: axillary nerve
Location: Back near the scapula
Action: Lateral rotation at the shoulder
Subscapularis
Nerve: subscapular nerve
Location: below the scapula
Action: Medial rotation of the shoulder
Deltoid
Nerve: Axillary nerve
Location: Across shoulder (cap)
Action: Rotation and Abduction at arm
Pectoralis Major
Nerve: Pectoral nerves
Location: Chest
Action: Flexion, abduction, and rotation of the shoulder
Latissimus Dorsi
Nerve: Thoracodorsal nerve
Location: Back and sides
Action: Extension, adduction, and medial rotation of the arm
Triceps Brachii
Three parts: long head, medial head, and lateral head
Nerve: Radial nerve
Location: upper arm
Action: Extension of elbow
Biceps Brachii
Two parts: long head and short head
Nerve: Musculocutaneous nerve
Action: Flexion of elbow and shoulder; supination
Flexor Digitorum Profundus
Nerve: palmar nerve, ulnar nerve
Location: Hand and wrists
Action: Flexion at the phalanges
Extensor Digitorum
Nerve: Deep radial nerve
Location: Forearm
Action: Extension of fingers and wrist
Diaphragm
Nerve: phrenic nerve
Location: abdomen
Action: compress and expand abdominopelvic cavity
Rectus Abdominis
Nerve: Intercostal nerves
Location: Medial portion of abdominals
Action: Depress ribs and flex vertebra
Transverse Abdominis
nerve: Intercostal, ilianguial nerves
Location: Abdominals
Action: Compress abdomen
Internal Oblique
Nerve: intercostal, ilihypogastric, and ilianginual nerves
Location: Outside center of the abdominals
Action: Depress ribs and flex and bend the spine
External Obliques
nerve: intercostal, ilihypo., and ilioin. nerves
Location: abdominals
Action: compress abs, bend spine
Gluteus Maximus
Nerve: Inferior glut. nerve
Location: Butt
Action: extension and rotation of hip
Gluteus Medius
Nerve: Superior glut. nerve
Location: Butt, below the Gluteus Maximum
Action: Adduction and medial rotation of the hip
Gluteus Minimus
Nerve: Superior glut. nerve
Location: Adduction and medial rotation of the hip
Tensor Fasciae Latae
Nerve: Gluteal nerve
Location: Gluteal region
Action: Support the knee and rotate the hip
Piriformis
Nerve: sacral nerves
Location: Along the glutes
Action: Rotation of the hip
Adductor Magnus
Nerve: Obturator and sciatic nerve
Location: along the femur
Action: Adduction of hip and rotation
Iliacus
Nerve: Femoral nerve
Location: Connects at ilium
Action: Flexion at hip
Psoas Major
Nerve: Lumbar Plexus
Location: Connects spinal column to ilium
Action: Flexion at hip or lumbar/invert.
Hamstrings
Biceps Femoris, Semimembranous, Semitendonous
Quadriceps
Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius
Biceps Femoris
Nerve: Sciatic nerve, common fib. branch
Location: Interior of the femur
Action: Flexion of knee, extension of the hip and rotation
Semimembranous
Nerve: Sciatic
Location: Ishial Tuberosity
Action: Flexion at the knee
Semitendonous
Nerve: Sciatic nerve
Location: Ishial Tuberosity
Action: External rotation of the hip
Rectus Femoris
Nerve: femoral nerve
Location: Tibial Tuberosity
Action: Flexion of the hip
Vastus Lateralis
Nerve: Femoral
Location: Tibial Tub.
Action: Extension of the knee
Vastus Medialis
Nerve: Sciatic
Location: Patella and femur
Actoin: Extension at the knee
Vastus Intermedius
Nerve: Femoral
Location: Patella and femur
Action: Extension at the knee
Gastronemius
Nerve: Tibial nerve
Location: Back of leg (calf)
Action: Inversion of the foot and ankle inversion
Soleus
Nerve: Sciatic nerve; tibial branch
Location: Near Gastroc.; wraps around
Action: Extension at the ankle
Tibilalis Anterior
Nerve: Deep Fibular
Location: Front of the Tibia
Action: Flex the ankle
Extensor Hallucis Longus
Nerve: Deep Fibular Nerve
Location: Along Tibia; pulls up toes
Action: Flexion at the hallux (great toe)
Flexor Digitorum
Nerve: Sciatic nerve; tibial branch
Action: Flexion of the toes