Stomatognathic System/TMJ
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help
|
|
||||
|---|---|---|---|---|---|
| 4 Structural elements | 1) Teeth 2) Bones 3) Cartilage 4) Ligaments | ||||
| 3 Functional elements | 1) Muscles 2) Blood supply 3)Nerves | ||||
| 3 Bony parts of the system | 1) Maxilla 2) Mandible 3) TMJ | ||||
| 5 parts of the maxilla | 1. Body 2. Zygomatic Process 3. Nasal process 4. Palatine process 5. Alveolar process | ||||
| 2 Horizontal components of the mandible | 1. Body 2. Alveolar process to hold teeth | ||||
| 3 vertical components of the mandible | 1. Ramus 2. coronoid process 3. condyles | ||||
| 3 parts of the TMJ | 1. temporal bone 2. glenoid fossa 3. condyle | ||||
| 4 Ligaments | 1. capsular 2. temperomandibular 3. sphenomandibular 4. stylomandibular | ||||
| Location of he capsular ligament | Encapsulates the TMJ (synovial capsule) | ||||
| Attachment of the capsular ligament | Condyle of the mandible to the zygomatic process | ||||
| Attachment ofthe temperomandibular ligament | Lateal aspect of the condylar neck to the zygomatic process | ||||
| Function of the temperomandibular ligament | Rotation (up to the point where the jaw must translate) | ||||
| Main suspensory ligament in hinge movement (rotation) | Temperomandibular ligament | ||||
| Attachment of the sphenomandibular ligament | From the medial ramus to the sphenoid bone | ||||
| Function of sphenomandibular ligament | Translation (takes over after rotation) | ||||
| Main suspensory ligament in translation | Sphenomandibular ligament | ||||
| Attachment of the stylomandibular ligament | Distal ramus to the styloid process | ||||
| Function of the stylomandibular ligament | Prevents excessive anterior drift when opening widely | ||||
| CT type of the disc assembly | Dense avascular collagenous | ||||
| Why is it good that there are no nerves in the disc assembly? | Otherwise, with breakdown, there would be pain in the disc | ||||
| Shape of the disc assembly | Biconcave | ||||
| Two ligaments that attach to the disc assembly | Medial and lateral collateral ligaments | ||||
| 4 muscles of mastication | 1. Masseter 2. Temporalis 3. Lateral (external) pterygoid 4. Medial pterygoid | ||||
| Muscles of mastication or neck muscles: Which are used for closing the mouth? | Muscles of mastication | ||||
| Function of the masseter | Elevate the mandible/clench | ||||
| Origin of the masseter | Zygomatic arch | ||||
| Insertion of the masseter | Lateral mandibular ramus | ||||
| Origin of the temporalis muscle | Temporal fossa | ||||
| Insertion of the temporalis muscle | Coronoid process | ||||
| Function of the anterior and middle belly of the temporalis muscle | Elevate the mandible | ||||
| Function of the posterior belly of the temporalis muscle | Retrude the mandible | ||||
| Origin of the medial pterygoid | Medial pterygoid plate | ||||
| Insertion of the medail pterygoid | Medial ramus/mandibular angle | ||||
| Function of the medial pterygoid muscle | Elevate the mandible | ||||
| Function of the inferior and superior lateral pterygoid | Protrude mandible/side to side movement | ||||
| Origin of the inferior head of the lateral pterygoid | Lateral surface of lateral pterygoid plate | ||||
| Insertion of the inferior head of the lateral pterygoid | Pterygoid fovea on condylar neck | ||||
| Origin of the superior head of the lateral pterygoid | Greater wing of the sphenoid | ||||
| Insertion of the superior head of the lateral pterygoid | TMJ meniscus and pterygoid fovea | ||||
| Two muscles of the "mandibular sling" | 1. massetor 2. medial pterygoid | ||||
| Most impotant suprahyoid muscle | Digastric | ||||
| 4 other functional muscles | 1. suprahyoid 2. infrahyoid 3. SCM 4. trapezius | ||||
| Functions of the suprahyoids | Depress/retract mandible, elevate hyoid/larynx | ||||
| 4 Infrahoid muscles | 1. thyro 2. sterno 3. sternothyroid 4. omo | ||||
| Function of the infrahyoids | Lower the hyoid bone and larynx | ||||
| Four extrinisic tongue muscles | 1. palatoglossus 2. genio 3. stylo 4. hyo | ||||
| 3 things attached to styloid process | 1. Styloglossus 2. Stylomandibular ligament 3. Stylohyoid | ||||
| 2 Major arteries to the head/neck | 1. internal carotid 2. external carotid | ||||
| 3 branches of the external carotid | 1. lingual 2. facial 3. maxillary | ||||
| Major plexus of veins in the head that will cause hematoma if you hit it with a PSA | Pterygoid plexus | ||||
| 3 divisions of Trigeminal nerve | 1. opthalmic 2. maxillary 3. mandibular | ||||
| 4 Sensory divisions of the maxillary division | 1. PSA 2. greater palatine 3. nasopalatine 4. infraorbital | ||||
| 4 sensory branches of the mandibular division | 1. IA 2. mental 3. lingual 4. buccal | ||||
| Motor branch of the mandibular division | masticatory nerve | ||||
| Innervation of the muscles of mastication | Trigeminal neve, Mandibular division | ||||
| Name of the sensory branch of the fascial nerve | Glossopalatine | ||||
| 2 Sensory ares of the facial nerve | 1. Anterior 2/3 tongue 2. soft palate | ||||
| 2 Motor areas of the facial nerve | 1. muscles of facial expression 2. submaxillary/sublingual glands | ||||
| Function of the TMJ | Connect mandible to maxilla | ||||
| TMJ joint type | Diarthrosis (free moving) | ||||
| TMJ movement type | Ginglymoarthroidal (rotation and translation) | ||||
| Bony components of the TMJ | 1. Condyles 2. Glenoid fossa 3. Articular eminence | ||||
| A line bisecting the midline of condyles form an angle of ____ degrees | 135 | ||||
| True or false: Retrodiscal tissue does not have nerves or blood supply | False, if there is displacement of the joint, this will move into the condylar space and cause pain | ||||
| Two types of joint spaces of the TMJ | 1. Superior cavity 2. Inferior cavity | ||||
| Cavity that predominates during translation | Superior cavity | ||||
| Cavity that predominates during rotation | Inferior cavity | ||||
| 4 Suprahyoid muscles | 1. Genio 2. Mylo 3. Stylohyoid 4. Digastric |
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
janygb143