What are the two superficial muscles of mastication?
Superficial Muscles of Mastication The medial pterygoid and superficial masseter are pretty straightforward, but the lateral pterygoid is an interesting little thing. It is one muscle but originates in two different locations.
What are the four paired muscles of mastication?
PRINCIPAL MUSCLES OF MASTICATION-
- Four paired muscles:-
- Medial Pterygoid (internal pterygoid)
- Lateral Pterygoid (external pterygoid)
What are the chewing muscles?
There are four muscles: Masseter. Temporalis. Medial pterygoid.
How do I memorize mastication?
“More Tea Less Milk”.
- M asseter.
- T emporalis.
- L ateral pterygoid.
- M edial pterygoid.
- Remember them easily with the mnemonic “More Tea Less Milk”.
- Alternatively, another mnemonic to remember the muscles of mastication : Take your TIME chewing food.
- T emporalis.
- I nternal pterygoid (Medial pterygoid ).
Is Buccinator a muscle of mastication?
The buccinator muscle forms the lateral wall of the oral cavity. It is presumed to aid mastication by maintaining bolus position. Such a function would involve thickening the cheek, possibly compressing the alveolar bone and contributing to malocclusions.
How do you test for muscle mastication?
Masseter can be easily tested by having the patient clench the jaw and evaluating the volume and firmness of the muscles. The other muscle of mastication supplied by the trigeminal nerve, the pterygoids are examined by having the patient move the jaw from the side against resistance, and protrude the jaw.
What are the two main chewing muscles?
- The masseter muscle is the main muscle used for chewing.
- The temporalis muscle originates above your temple and connects to the jaw.
- The pterygoid muscles are underneath the masseter and assist in chewing movements.
Is buccinator a muscle of mastication?
What are the muscles of the mastication process?
Muscles of mastication- origin, insertion, action and nerve supply of temporalis, masseter, medial pterygoid, lateral pterygoid muscle. Simple, quick and easy notes for exams Muscles of mastication- origin, insertion, action and nerve supply of temporalis, masseter, medial pterygoid, lateral pterygoid muscle. Simple, quick and easy notes for exams
Where does the blood supply for mastication come from?
The arterial supply comes from the pterygoid branch of maxillary artery. The function of this muscle is to pull down the mandible, and protrude it in the forward direction to aid in the opening of jaw. It is a thick muscle starting from the lateral pterygoid plate and maxillary tuberosity. It inserts itself into the medial angle of the mandible.
Which is the most common pathological cause of mastication?
Aside from direct trauma, the most common pathological ailment affecting the muscles of mastication is a condition known as trismus (or lockjaw). It is defined as a prolonged tonic spasm of the jaw muscles. The affected patients find it very difficult and in some cases impossible to open the mouth.
Where does the lower head of mastication originate?
Origin: Upper had arises from infratemporal surface of greater wing of sphenoid and the lower head arises from the lateral surface of lateral pterygoid plate. Insertion: It is inserted on pterygoid fovea (in front of the neck of mandible) and the capsule and articular disc of temporomandibular joint.