Head and Neck Anatomy Flashcards
7 cards from real MFDS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Head and Neck Anatomy flashcards as text
An inferior alveolar nerve block fails to anaesthetise which structure, necessitating a separate injection?
Answer: Buccal gingiva of mandibular molars
The buccal (long buccal) nerve, a separate branch of CN V3, supplies the buccal gingiva and mucosa of the mandibular molar region and is not blocked by a standard inferior alveolar nerve block.
Which muscle protracts the mandibular condyle during mouth opening?
Answer: Lateral pterygoid
The inferior head of the lateral pterygoid contracts during mouth opening, pulling the condyle and articular disc anteriorly (protraction), while the posterior fibres of temporalis retract the condyle on closing.
The mylohyoid nerve, which supplies the mylohyoid muscle, arises from which parent nerve?
Answer: Inferior alveolar nerve
The mylohyoid nerve is a branch of the inferior alveolar nerve arising just before it enters the mandibular foramen; it runs in the mylohyoid groove to supply the mylohyoid muscle and the anterior belly of the digastric.
The maxillary teeth receive their primary arterial supply from branches of which artery?
Answer: Maxillary artery
The posterior superior alveolar and anterior superior alveolar arteries, both branches of the maxillary artery, supply the maxillary teeth and their supporting structures.
The pterygomandibular raphe serves as the key landmark for which local anaesthetic technique?
Answer: Inferior alveolar nerve block
The pterygomandibular raphe marks the medial boundary of the pterygomandibular space; the needle for an inferior alveolar nerve block is directed lateral to this raphe, towards the mandibular foramen.
Which bones form the floor of the orbit?
Answer: Zygomatic, maxillary, and palatine bones
The floor of the orbit is formed by the orbital surface of the maxilla (largest contribution), the orbital surface of the zygomatic bone (anterolaterally), and the orbital process of the palatine bone (posteriorly).
Which cranial nerve exits the skull through the stylomastoid foramen?
Answer: Facial nerve (CN VII)
The facial nerve (CN VII) exits the skull through the stylomastoid foramen before entering the parotid gland, where it divides into its five terminal branches (temporal, zygomatic, buccal, marginal mandibular, cervical).