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Spine Anatomy

Diaphragm - Lateral Pterygoid

What is the diaphram PA? Upper lumbar vertebrae, lower 6 ribs and costal cartilages, xiphoid process.
What is the diaphram DA? Central tendon of diaphragm.
What is the diaphram N? Phrenic n. (C3, C4, C5)
What is the diaphram A? Flattens central tendon, increasing vertical diameter of thoracic cavity in inspiration.
Multifidus PA? Sacrum and TP C4-L5(dont need to know numbes).
Multifidus DA? SP C, T, L vertebrae (spanning 2-4 segments) and meniscus.
Multifidus N? DR.
Multifidus A? Bilaterally: Extension of vertebrae. Unilaterally: Contralateral rotation. May play a role in proprioception of the lumbar spine.
Rotatores PA? TP C2 to sacrum(dont need to know numbers)
Rotatores DA? Lamina of vertebrae 1-2 segments above origin.
Rotatores N? DR.
Rotatores A? Bilaterally: Extension of vertebrae. Unilaterally: Contralateral rotation.
Longus Colli A? Bilaterally: Flexes neck Unilaterally: Flexes neck, contralateral rotation.
Longus Capitus A? Flexes head.
Rectus Capitus Anterior A? Flexes head.
Rectus Capitus Lateralis A? Flexes head
Masseter PA? Superficial portion: anterior 2/3rds of lower border of zygomatic arch. Deep Portion: Medial surface of zygomatic arch
Masseter DA? lateral surface of ramus of mandible, coronoid process, angle of mandible.
Masseter N? CN V.
Masseter A? Elevates mandible closing jaws; superficial fibers may have some protruding action.
Temporalis PA? Temporal fossa and temporal fascia.
Temporalis DA? coronoid process and anterior border of ramus of mandible.
Temporalis N? CN V.
Temporalis A? Anterior fibers primarily elevate mandible closing jaws. Middle fibers elevate and protrude. Posterior fibers elevate and may slightly retrude
Medial Pterygoid PA? Medial surface of pterygoid plate.
Medial Pterygoid DA? Medial surface of ramus of mandible.
Medial Pterygoid N? CN V.
Medial Pterygoid A? Elevate and assist in protruding mandible.
Lateral Pterygoid PA? Inferior: inferior surface of the lateral pterygoid plate. Superior: Infratemporal surface of the greater wing of the sphenoid
Lateral Pterygoid DA? Inferior: mandibular condyle. Superior: articular capsule, disk, and mandibular condyle
Lateral Pterygoid N? CN V.
Lateral Pterygoid A? Inferior: Bilaterally: protrusion. Unilaterally: lateral deviation to the contralateral side. Superior: forward rotation of the articular disc during the power stroke of chewing
What are the four trigeminal nuclei? primary motor, spinal trigeminal, main sensory, mesencephalic
Which of the two trigeminal nuclei are responsible for the muscles of mastication and jaw jerk reflex? primary motor and mesencephalic
Which one of the trigeminal nuclei are responsible for proprioception of the muscles of mastication? mesencephalic
Created by: txst spr 2009