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OA lecture 3
| Question | Answer |
|---|---|
| Which is not a muscle of mastication | Buccinator |
| The masseter is controlled by cranial nerve: | V3 |
| Tongue protrusion is accomplished by | Genioglossus |
| Motor activity for the tongue is provided by cranial nerve: | XII |
| Which muscle does not contribute to a smile | Buccinator |
| Insertion for the temporalis muscle | Coronoid process |
| Which does not insert in skin | Masseter |
| This mucosa is keratinized | Masticatory |
| Depression of the mandible | Lateral pterygoid |
| Muscles of facial expression are controlled by: | VII |
| Milohyoid muscle receives observation from | V3 |
| Depression of the lower lip | Depressor labii inferioris |
| The fixed end of a muscle | Origin |
| Palatale muscle innervated by V3 | Tensor veli palatini |
| Which of these is deepest | Levator anguli oris |
| Definition of origin | Attached to the least movable structure |
| What is the definition of insertion | Attached to the more movable structure |
| Definition of action | Movement accomplished by muscle attachment |
| What is the innervation for the muscles of mastication | V3 |
| Name the muscles of mastication | Masseter Temporalis Medial pterygoid Lateral pterygoid |
| Which muscle of mastication is the strongest | Masseter |
| What is the action of the temporalis | Elevation of mandibular Posterior fibers retrude the mandible |
| What is the action of the masseter | Elevates the mandible |
| Where is the origin and insertion of the temporalis | Origin- temporal fossa Insertion- coronoid process of the mandible (has to travel medial of the zygomatic to get there) |
| IS the temporalis a powerful muscle? | No |
| Which two muscles for a sling for the mandible | Medial pterygoid and masseter |
| What is the function of the medial pterygoid? | Elevation of the mandible |
| What is the action of the lateral pterygoid? | Depression of the mandible Protrusion of the mandible (moving fwd and side to side) |
| Where does the frontal belly of the epicranius insert and originate? | Insertion- eyebrow and root of nose Originate- epicranial aponerosis |
| Where does the occipital belly of the epicranius originate and insert? | Originate- occipital and temporal bones Insertion- epicranial aponeurosis |
| What is the action of the epicranius? | Rises the eyebrows and raises the scalp (Surprise facial expression) |
| What is the action of the orbicularis oculi? | Closes the eyelid "Squinting" |
| Where does the corrugator supercili insert and originate? | Origin: frontal bone Insertion: skin lateral to eyebrow |
| What is the action of corrugator supercili | Moves the skin of the eyebrow medial and inferior. Vertical wrinkle in the forehead (frowning) ☹ |
| Name the insertion and origin of the procerus | Origin- nasal bone Insertion- skin of the forehead |
| What is the action of the procerus | Horizontal wrinkles between the eyebrows |
| Which muscles causes flaring of nares, elevates the lip, and makes the nostrils flare? | Levator labii superioris alaeque nasi |
| Which muscle originates ad the frontal process of the maxilla and inserts at the skin at all of the nose and upper lip? | Levator labii superioris alaeque nasi |
| The levator labii superioris muscle originates at the infraorbital rim? True or false | True |
| The zygomaticus major muscle originates at the skin at the angle of the mouth? True or false | False |
| Where does the zygomaticus major originate and insert? | Originates on the zygomatic bone lateral to the zygomatic minor and inserts at the skin at the angle of the mouth |
| Name the smile muscles | Zygomatic major, zygomatic minor, levator anguli oris, risorius |
| Where does the zygomsticus major insert? | Skin at the angle of the mouth |
| Which muscle inserts just medial to the zygomatic major? | Zygomaticus minor |
| Where is the origin and insertion of the levator anguli oris | Originates at the canine fossa of the maxilla and inserts at the skin at the angle of the mouth |
| Which muscle is considered the kissing muscle | Orbicularis oris |
| What is the action of the risorius | Widens the mouth, stretching the lips |
| What are the origins of the buccinator | Fibrous- pterygoidmandibular raphe 2 bony origins: buccal alveolar bone maxilla and mandible |
| What are the actions of the buccinator | Pulls the angle of the mouth laterally, shortens the cheek vertically, shortens the cheek horizontally |
| Buccinator is on the four smile muscles? True or false | False |
| Where is the blood supply for the tongue | In the lingual artery |
| Name the three functions of the tongue | Speech, aids in mastication, swallowing |
| What types of mucosa are involved in the tongue | Lining, masticatory, specialized |
| IS masticatory mucosa kernatized? | Yes |
| Where would you be able to find lining mucosa | Ventral surface of the tongue, floor of the mouth, alveolar and buccal mucosa, and the soft palate |
| What is the insertion of the genioglossus | Ventral surface of the tongue |
| What is the action of styloglossus | Retracts the tongue moving it superiorly and posteriorly |
| The hyoglossus muscle depresses the tongue? True or false | True |
| Where does the hyoglossus muscle insert? | Inserts at the lateral surface of the tongue |
| Which intrinsic tongue muscles shortens and thickens the tongue? | Superior longitudinal and inferior longitudinal |
| Which intrinsic tongue muscles lengthen and narrow the tongue | Transverse and vertical |
| The levator veli palantine muscle is inverted by the pharyngeal plexus. True or false | True |
| Name the actions of the tensor veli palantine muscle | Opens eustachian tube and tenses and depressed the soft palate |
| What is the action of the constrictor muscles | Elevate pharynx/larynx |
| Name the muscles of the suprahyoid group | Digastric muscle, milohyoid muscle, geniohyoid, and stylohyoid muscle |
| What is the anterior bellie and posterior bellies of the digastric innervated by? | Anterior: V3 posterior: VII |
| Which muscle forms the floor of the mouth | Mylohyoid |
| What is the action of the geniohyoid | Elevates the hyoid; depression of the mandible |
| What is the origin and insertion of the mylohyoid | Origin: mylohyoid ridge insertion: body of the hyoid |
| What is the mylohyoid innervated by? | Mylohyoid nerve (branch of V3) |
| Where does the stylohyoid originate? | Styloid process |
| What is the action of the stylohyoid | Elevates the hyoid and depresses the mandible |
| Name the infrahyoid muscles | Sternothyroid muscle, sternohoid muscle, omohyoid muscle, throhyoid muscle |
| What is the innervation of the infrahyoid muscles | Innervated by the 2nd and 3rd cervical nerve |
| What is the action of the sternohyoid | Depress the hyoid |
| What is the action of the omohyoid | Depress the hyoid |
| What is the origin and insertion of the thyrohyoid | Origin: thyroid cartilage Insertion: greater conru of hyoid |
| What is the insertion of the sternocleidomastoid | Mastoid process |
| What is the origin of the SCM | Medial clavical and superior and lateral sternum |
| What is the action of the trapezius | Elevates scapula and clavicle |
| What is the innervation of the trapezius | XI |
| Where is the insertion of the trapezius | Lateral 1/3 of the clavical/scapula |
| Which muscle protrudes the tongue | Genioglossus |
| Which muscle of mastication originates on the zygomatic arch | Masseter |
| Which muscle originates on the zygomatic arch and inserts at the angle of the mouth | Zygomatic major |
| Orbicularis oris muscle contributes to a a smile? True or false | False |
Created by:
Aisha.rios