head and neck anatomy

Front

What bone forms the majority of the lateral wall of the orbit?

Back

The zygomatic bone and the greater wing of the sphenoid bone form the majority of the lateral wall of the orbit.

Front

What is the function of the medial pterygoid muscle?

Back

The medial pterygoid muscle is responsible for elevating the mandible and assisting in the grinding motion of the jaw.

Front

What separates the anterior cranial fossa from the middle cranial fossa?

Back

The lesser wing of the sphenoid bone separates the anterior cranial fossa from the middle cranial fossa.

Front

Which nerve supplies the medial pterygoid muscle?

Back

The medial pterygoid muscle is supplied by the nerve to the medial pterygoid, which is a branch of the mandibular nerve (V3).

Front

What structures pass through the second pharyngeal gap?

Back

The glossopharyngeal nerve and the stylopharyngeus muscle pass through the second pharyngeal gap.

Front

What is the primary action of the superior oblique muscle?

Back

The primary action of the superior oblique muscle is to depress, abduct, and internally rotate the eyeball.

Front

Which muscle is responsible for elevation of the eye?

Back

The superior rectus muscle is responsible for the elevation of the eye.

Front

What is the role of the levator veli palatini muscle?

Back

The levator veli palatini muscle elevates the soft palate during swallowing and helps close off the nasopharynx.

Front

What is the significance of the ethmoid bone in the skull?

Back

The ethmoid bone is significant for its role in forming the nasal cavity and the orbits, and it contains the cribriform plate, which is important for olfactory function.

Front

What is the function of the glossopharyngeal nerve?

Back

The glossopharyngeal nerve is involved in taste sensation from the posterior one-third of the tongue and provides motor innervation to the stylopharyngeus muscle.