41 Questions
Which muscle is responsible for closing the eyelids?
Orbicularis Oculi
Which muscle is responsible for elevating and retracting the upper eyelid?
Levator palpebrae superioris
Which layer of the skull do the muscles of the scalp, forehead, and eyebrows originate from?
Galea aponeurotica
Which ligament separates the parotid gland from the submandibular gland and limits movement of the mandible at the TMJ?
TMJ-stylomandibular ligament
Which movement is involved in opening the mouth?
Anterior movement of the head of the mandible and the articular disc
Which arteries supply the brain?
Vertebral artery
Which veins drain all of the blood from the head and neck?
Jugular veins
Which muscles of the face help to direct the ears toward the sources of sounds?
Muscles of the nose
Which muscles help to keep food in the mouth and resist distension of the mouth?
Orbicularis oris and buccinator
Which muscles retract the various borders of the oral fissure collectively, in groups, or individually?
Dilator muscles radiating from the lips and angles of the mouth
Which muscles are involved in the mastication process?
Temporalis, masseter, medial pterygoid, and lateral pterygoid
Which muscle is responsible for closing the eyelids?
Orbicularis Oculi
Which muscle is responsible for elevating and retracting the upper eyelid?
Levator Palpebrae Superioris
Which muscle retracts the various borders of the oral fissure collectively, in groups, or individually?
Orbicularis Oculi
Which ligament separates the parotid gland from the submandibular gland and limits movement of the mandible at the TMJ?
Orbicularis Oculi
Which layer of the skull do the muscles of the scalp, forehead, and eyebrows originate from?
Galea aponeurotica
Which muscles are involved in the mastication process?
Muscles of Mastication
Which arteries supply the brain?
Carotid arteries
Which movement is involved in opening the mouth?
Depression
Which muscles help to keep food in the mouth and resist distension of the mouth?
Buccinator
Which veins drain all of the blood from the head and neck?
Jugular veins
Which bone contains the mandibular fossa, where the temporomandibular joint (TMJ) is located?
Temporal bone
Which structure separates the joint cavity of the TMJ into superior and inferior compartments?
Articular disc
Which ligament strengthens the TMJ laterally and helps prevent posterior dislocation of the mandible?
TMJ-lateral ligament
Which ligament extends from the spine of the sphenoid to the medial surface of the ramus of the mandible?
TMJ-sphenomandibular ligament
Which ligament extends from the styloid process of the temporal bone to the inferior and posterior borders of the ramus of the mandible?
TMJ-stylomandibular ligament
What is the basic movement involved in opening the mouth?
Anterior movement of the head of the mandible
When does dislocation of the TMJ commonly occur?
During yawning
Which arteries supply the head and neck with oxygenated blood?
Common carotid arteries
Which veins drain all of the blood from the head and neck?
Internal and external jugular veins
How many pairs of cranial nerves are there?
12
Which muscles are relatively unimportant in humans?
Muscles of the nose
Which muscles help to direct the ears toward the sources of sounds?
Muscles of the ears
Which muscle helps keep food in the mouth and resists distension of the mouth?
Orbicularis oris
Which muscle presses cheeks against teeth and lips, as in whistling?
Buccinator
Which muscle is responsible for closing and protruding the lips, such as in kissing?
Orbicularis oris
Which muscles retract the various borders of the oral fissure collectively, in groups, or individually?
Dilator muscles
Which muscle originates from the temporal fossa and fascia and inserts on the coronoid process and anterior border of the ramus of the mandible?
Temporalis
Which muscle originates from the zygomatic arch and inserts on the lateral surface of the ramus of the mandible?
Masseter
Which muscle mainly originates from the pterygoid process of the sphenoid bone and inserts on the medial surface of the angle of the mandible?
Medial pterygoid
Which muscle mainly originates from the pterygoid process of the sphenoid bone and inserts on the articular disc and the neck of the mandible?
Lateral pterygoid
Study Notes
Muscles of the Face and Skull
- The orbicularis oculi muscle is responsible for closing the eyelids.
- The levator palpebrae superioris muscle is responsible for elevating and retracting the upper eyelid.
- The muscles of the scalp, forehead, and eyebrows originate from the aponeurotic layer of the skull.
- The stylomandibular ligament separates the parotid gland from the submandibular gland and limits movement of the mandible at the TMJ.
TMJ and Mastication
- The movement involved in opening the mouth is depression.
- The external carotid artery and its branches supply the brain.
- The internal jugular and external jugular veins drain all of the blood from the head and neck.
- The muscles involved in the mastication process are the masseter, temporalis, and medial and lateral pterygoids.
- The temporomandibular joint (TMJ) is located in the mandibular fossa of the temporal bone.
Ligaments and Joints
- The articular disc separates the joint cavity of the TMJ into superior and inferior compartments.
- The temporomandibular ligament strengthens the TMJ laterally and helps prevent posterior dislocation of the mandible.
- The sphenomandibular ligament extends from the spine of the sphenoid to the medial surface of the ramus of the mandible.
- The stylomandibular ligament extends from the styloid process of the temporal bone to the inferior and posterior borders of the ramus of the mandible.
Additional Facts
- Dislocation of the TMJ commonly occurs when the mouth is open wide and the condyle of the mandible moves anterior to the articulating surface of the temporal bone.
- There are 12 pairs of cranial nerves.
- The auriculotemporalis muscles are relatively unimportant in humans.
- The auriculotemporalis muscles help to direct the ears toward the sources of sounds.
- The buccinator muscle helps keep food in the mouth and resists distension of the mouth.
- The buccinator muscle presses cheeks against teeth and lips, as in whistling.
- The orbicularis oris muscle is responsible for closing and protruding the lips, such as in kissing.
- The mentalis muscle retracts the various borders of the oral fissure collectively, in groups, or individually.
- The temporalis muscle originates from the temporal fossa and fascia and inserts on the coronoid process and anterior border of the ramus of the mandible.
- The masseter muscle originates from the zygomatic arch and inserts on the lateral surface of the ramus of the mandible.
- The medial pterygoid muscle mainly originates from the pterygoid process of the sphenoid bone and inserts on the medial surface of the angle of the mandible.
- The lateral pterygoid muscle mainly originates from the pterygoid process of the sphenoid bone and inserts on the articular disc and the neck of the mandible.
Test your knowledge of the face, scalp, muscles of mastication, TMJ, neck vasculature, and cranial nerves with this anatomy quiz. Based on the lecture from Moore's Clinically Oriented Anatomy, this quiz covers important concepts from the 9th edition. Put your anatomy skills to the test and see how well you understand these key topics.
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