Acland anatomy part 4 (Oral cavity and surroundings)
Home > Flashcards > Print Preview
The flashcards below were created by user
on FreezingBlue Flashcards
. What would you like to do?
The dip section between the condyle and the coronoid process is:
the mandibular notch
Projection in the midline of the mandibile external body
4 protuberances on the posterior midline portion of the body of the mandibule
The TMJ is a _______ joint, with ______ _____ on the bones surfaces and a _____ ______ that encloses synovial fluid
- Articular cartilage
- joint capsule
In the TMJ there are ___ separate synovial cavities (one above the other) separated by an _____ ____ thats flexible and highly movable
The 2 movements capable by the TMJ are
- Hinge: (Between the condyle and the disc)
- Gliding: (between the disc and temporal surface)
The normal opening of the jaw is a combination of the 2 movements.
Forward movement of the mandibule is held in check by these 2 ligaments that lie outside of the TMJ, where do they insert?
- Stylomandibular ligament (styloid process to the angle of the mandible)
- Sphenomandibular ligament (spine of the sphenoid to the lingula)
This muscle arises from the underside of the sphenoid and lateral aspect of the lateral pterygoid plate. Inserts at the neck of the condyle, under the capsule of TMJ, front edge of articular disc. Opens the mandibule...
This muscle arises from the pterygoid fossa and the tuber(maxilla) and runs downwards/backwards to insert in the inner aspect of the angle of the mandible.
The largest of the muscles of mastication, this fan shaped muscle arises from the wide area of the side of the skull along the temporal line and the fibers converge from above and behind the coronoid process and inserts on the outer/inner aspect of the coronoid process and anterior part of the ramus of the mandibule
This muscle lies inside the zygomatic arch and occupies the whole of the infratemporal fossa and covered by temporal fasca
This thick muscle arises from the anterior 2/3 of the lower border of the zygomatic arch (outer) fibers run backwards, and the whole length of the inner border of the zygomatic arch (inner) fibers run downwards.
This muscle inserts inferiorly on the angle and ramus of the outside of the mandibule.
Together with its attacts musles, this u shaped, suspended bone has 3 important functions
- Hold ups the tongue which sits above it
- Holds up the larynx (hangs below it)
- Transmits the force of muscles that help open the jaw and move the tongue
Which are the two muscles that pull the hyoid upwards and forwards?
These muscles that form the mobile floor of the oral cavity arises from the ___________ ____ on the mandibule and joins its pair, inserting on the body of the hyoid
These muscles arise from the lower part of mental spine, are located above the mylohyoid muscles and insert on the body of the hyoid bone.
The muscle that pulls the hyoid upwards and backwards, arises from the lateral aspect of the styloid process and inserts on the base of the greater horn of the hyoid. (which muscle passes through an opening of his)
- Posterior belly of digastric
This posterior belly of this muscle (PULLEY UPWARDS) arises from the digastric notch of the ________ bone and the mastoid process. And passes through the sling of the stylohyoid to attach to the hyoid body. Anterior belly goes from hyoid under the mylohyoid to attach to digastric fossa on the mandible
- Anterior and posterior bellys of Disgastric muscie
3 muscles that pull the hyoid downwards. INFRAHYOID MUSCLES
Which are the 3 extrinsic muscles (attach to bone) of the tongue, from largest to smallest?
Which 2 muscles form the root of the tongue?
These lingual muscles arise from the upper part of the mental spine, it compacts and pulls tongue forward.
This lingual muscle arises from the whole length of the greater horn of the hyoid and ends along the side of the tongue, flattening and pulling backwards
Fold in the mucous membrane running from the soft palate to the side of the tongue, acts as a dam preventing liquids from spilling back, is called the:
Behind the palato-glossal arch is the _______ _______ arch and the triangle that forms between them is occupied by ______ in younger people.
- Palatopharyngeal arch
Band that goes from the pterygoid hamulus to the posterior end of the mylohyoid line, which 2 muscles arise from this band?
- The pterygomandibular band (raphe)
- Buccinator (in front)
- Superior constrictor of the pharynx (behind)
Two muscles of the face responsible for preventing distension of the cheeks and the tight closing of the opening of the oral cavity. These muscles are closely linked together
- Orbicularis Oris
Which are the 3 salivary glands?
Saliva from the parotid gland exits through the _______ _____ which emerges from the anterior part of the gland and passes forward around the anterior border of the masseter, Passes through the buccinator and exits around the 2nd upper molar.
This gland curls around the free border of the mylohyoid muscle near the angle of the mandibule. What is the name of the passage which it drains?
- submandibular gland
- submandibular duct
The submandibular duct runs along the floor of the mouth and ends beside the _______
This gland is flat and diffuse, runs along the genioglossus muscle. saliva from it enters through
- several small openings
The _____ cartilage is partly enclosed by the larger _____ cartilage which sits above it. Both of which are _____ to the hyoid bone
The thyroid cartilage laminae meet at an angle of ___ in female and ___ in males, in which is projects forward giving rise to the _____ ____.
The thyroid laminae meet above in a V-shaped notch called.
Superior thyroid notch
In the thyroid cartilage the superior and inferior tubercles are joined by this ridge, which is a muscle attachment for:
The thyroid cartilage contains 2 _______ horns and 2 _______ inferior horns, which project where?
The thyroid cartilage is suspended from the hyoid bone by the ________ ______ which posteriorly becomes thicker to form the _______ ___________ _______
- Thyrohyoid membrane
- Lateral thyrohyoid ligament
The inferior horn of the thyroid cartilage articulates with the _____ ______ at the _________ _______.
- Cricoid cartilage
- Cricothyroid joint
Below the Cricoid cartilage is continus with the
The wall of the pharynx is made up by continuous muscle lined by mucous membrane. The muscular layer consists of 3 sheets of muscles
Superior, middle and inferior constrictor muscles.
This one of the constrictor muscles arises from the medial pterygoid plate, the hamulus the pterygomandibular band and side of the tongue. has a free upper border formed by a fascia and below inside the middle
This constrictor arises from the greater and lesser horn of the hyoid bone.
The thickest of the constrictor muscles that arises from just behind the oblique line on the thyroid cartilage and the side of cricoid. It continues inferiorly with the muscles of the esophagus, another muscle forms below with the cricoid cartilage that forms a sphinter.
- Cricopharyngeus muscle
It arises from the palate aponeurosis and passes downwards and forwards to insert on the side of the tongue. Pulls the soft palate forward and downwards
Arises from the edge of the hard palate and palatal aponeurosis, passes downwards and backwards to blend with continues layer of longitudinal muscle that lines the pharynx. Lowest fibers insert on posterior border of thyroid cartilage
Palatopharyngeus lies inside the _______ muscles, hiding them almost completely
What would you like to do?
Home > Flashcards > Print Preview