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Spine Anatomy
Diaphragm - Lateral Pterygoid
| Question | Answer |
|---|---|
| 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 |