Arterial perfusion of the hard palate is supplied predominantly by_______________?
Show answer Hide answer
Answer: B. Greater (anterior) palatine
Explanation
Arterial perfusion of the hard palate is supplied by greater palatine. This vessel emerges from the greater palatine foramen to supply mucosa. It courses forward along the hard palate toward the incisive canal. The hard palate forms the bony floor of the nasal cavity. Palatal mucosa is tightly bound to the underlying periosteum of bone. Branches of the maxillary artery supply the structures of the oral cavity.
Local anesthesia injections in the palate target the greater palatine neurovascular bundle. Surgeons harvest palatal connective tissue grafts for periodontal plastic procedures. Vascular trauma during palatal surgery can cause brisk arterial bleeding. The lesser palatine artery supplies blood mainly to the soft palate region. The nasopalatine artery supplies the anterior portion of the hard palate. The sphenopalatine artery is the parent vessel giving rise to palatine branches.
Related questions
Q1. Motor innervation to the musculature of the tongue is delivered by_____________?
Show answer Hide answer
Answer: D. Hypoglossal
Motor innervation to the musculature of the tongue is delivered primarily by the hypoglossal nerve. Every intrinsic and almost every extrinsic tongue muscle relies on this cranial nerve for motor function. Damage to this...
Q2. The hyoid bone is positioned in the anterior midline of the neck at the vertebral level of_______________?
Show answer Hide answer
Answer: A. Third cervical vertebra
The hyoid bone is located in the anterior neck at the vertebral level of the third cervical vertebra. This unique horseshoe-shaped bone sits suspended in soft tissue without making direct bony articulations. Palpating th...
Q3. Maxillary sinus drainage flows into_______________?
Show answer Hide answer
Answer: B. Inferior meatus
Maxillary sinus drainage flows into the middle meatus, though some options list inferior incorrectly; the sinus actually opens into the middle meatus via the hiatus semilunaris.
Q4. The stapedius muscle receives its motor nerve supply from______________?
Show answer Hide answer
Answer: C. VII cranial nerve
The stapedius muscle in the middle ear is innervated by the nerve of the second pharyngeal arch, which is the facial nerve. Cranial nerve VII sends a tiny motor branch directly into the tympanic cavity to supply the stap...
Q5. With the exception of one, all extraocular muscles are innervated by the oculomotor nerve except________________?
Show answer Hide answer
Answer: E. A & B
The lateral rectus and superior oblique muscles are classic exceptions not innervated by the oculomotor nerve. The lateral rectus muscle is supplied exclusively by the abducens nerve innervating extraocular movement. The...
Q6. The oculomotor nerve provides motor innervation to all extraocular muscles except_____________?
Show answer Hide answer
Answer: D. A & B
Both the lateral rectus and superior oblique muscles receive motor innervation from cranial nerves VI and IV. The oculomotor nerve supplies all other extraocular eye muscles controlling normal gaze movements. Anatomical...