Tensor Veli Palatini

Soft Palate · Head & Neck

The Tensor Veli Palatini is a Head & Neck muscle within the Soft Palate group. Originating at Scaphoid fossa and medial pterygoid plate of the sphenoid, spine of the sphenoid, and cartilage of the auditory tube, it inserts at Palatine aponeurosis (after hooking around the pterygoid hamulus). Its chief action is that it tenses the soft palate and opens the auditory (Eustachian) tube during swallowing and yawning. Its nerve supply is the Medial pterygoid nerve from the mandibular nerve (CN V3).

Origin, Insertion, Action & Nerve

Origin

Scaphoid fossa and medial pterygoid plate of the sphenoid, spine of the sphenoid, and cartilage of the auditory tube

Insertion

Palatine aponeurosis (after hooking around the pterygoid hamulus)

Action

Tenses the soft palate and opens the auditory (Eustachian) tube during swallowing and yawning

Nerve

Medial pterygoid nerve from the mandibular nerve (CN V3)

Attachments explained

The Tensor Veli Palatini is defined first by where it attaches. Its origin is the more fixed anchor, usually the proximal or more stable end that stays put during contraction, while its insertion is the more mobile point that is pulled toward the origin when the muscle shortens.

Origin

Scaphoid fossa and medial pterygoid plate of the sphenoid, spine of the sphenoid, and cartilage of the auditory tube

Insertion

Palatine aponeurosis (after hooking around the pterygoid hamulus)

Action & function

When the Tensor Veli Palatini contracts, it produces the following movement: Tenses the soft palate and opens the auditory (Eustachian) tube during swallowing and yawning.

As part of the Soft Palate group of the Head & Neck, it works alongside neighbouring muscles to generate smooth, coordinated movement and to stabilise the structures it acts on.

Nerve supply & clinical relevance

The Tensor Veli Palatini receives its nerve supply from the Medial pterygoid nerve from the mandibular nerve (CN V3).

Because a muscle can only contract when its nerve is intact, injury to the Medial pterygoid nerve from the mandibular nerve can weaken or paralyse the Tensor Veli Palatini, impairing the movements it normally produces (tenses the soft palate and opens the auditory (Eustachian) tube during swallowing and yawning). This is why knowing the innervation is central to localising nerve lesions in clinical practice.

How to study the Tensor Veli Palatini (the OIANS method)

OIANS stands for Origin, Insertion, Action and Nerve, the four facts that uniquely define every skeletal muscle. To learn the Tensor Veli Palatini, work through them in order: picture its origin, trace the muscle to its insertion, reason out the action that shortening between those two points must create, then add the nerve that drives it.

Most students remember the Tensor Veli Palatini fastest by linking its action back to its attachments rather than memorising each fact in isolation. Once the origin and insertion make sense, the action usually follows logically.