MUSCLES DA ARTICULAÇÃO TEMPOROMANDIBULAR – ATM
A articulação temporomandibular (ATM) responsável pelos movimentos da mandíbula (fonação, mastigação).
Articulation: Temporal bone mandibular fossa and mandible condyle head.
Main Movements:
Occlusion & #8211; Contact of the teeth of the upper arch with the lower arch.
Protrusion & #8211; It is a forward (forward) movement as occurs in the protrusion of the jaw.
Retrusion & #8211; It is a retraction movement (backward) as occurs in the retrusion of the mandible.
ATM MUSCLES |
1. Temporal
2. Masseter 3. Medial Pterygoid 4. Lateral Pterygoid |
1. TEMPORAL
Source: External face of thunderstorm
Insertion: Coronoid process of the mandible and anterior aspect of the mandible branch
Innervation: Temporal Nerve (Trigeminal Mandibular Branch & #8211; V Cranial Pair)
Action: Elevation (Occlusion) and Retraction of the Jaw
2. MASSETER
Source: Zygomatic Arch
Insertion:
Superficial fascicle: Jaw angle and branch
Deep fascicle: Branch and jaw coronoid process
Innervation: Masseteric Nerve (Trigeminal Mandibular Branch & #8211; V Cranial Pair)
Action: Elevation (Occlusion) of the Jaw
3. MEDIAL PTERIGOID
Source: Medial face of the lateral blade of the pterygoid process of the sphenoid bone
Insertion: Medial Face of Angle and Branch of Jaw
Innervation: Medial Pterygoid Nerve (Trigeminal Mandibular Branch & V Cranial Pair)
Action: Elevation (Occlusion) of the Jaw
4. SIDE PTERIGOID
Source:
Upper head: Larger wing of the sphenoid
Lower Head: Lateral face of the lateral blade of the pterygoid process of the sphenoid bone
Insertion:
Upper head: Anterior face of the articular disc
Lower Head: Jaw condyle
Innervation: Lateral Pterygoid Nerve (Trigeminal Mandibular Branch & #8211; V Cranial Pair)
Action: Mouth Opening and Jaw Protrusion. Moves the jaw from side to side
ATM MUSCLES
Masseter and Temporal |
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Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000. |
ATM MUSCLES
Pterigoids Lateral and Medial & #8211; Side view |
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Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000. |
ATM MUSCLES
Pterigoids Lateral and Medial & #8211; Bottom view |
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Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000. |
Other Muscle Groups |
Face
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