Corpus: Temporoparietal muscle

The temporoparietal muscle is a thin muscle that runs along both sides of the lateral skull, belongs to the epicranial muscles and is categorised as a mimic muscle.

The posterior part of the temporoparietal muscle is also known as the superior auricular muscle and is categorised as an ear muscle.

The origin of the muscle lies in the fascia of the temporalis muscle above the ear.

The fibres run vertically cranially and radiate into the tendon plate of the skull roof, the galea aponeurotica, where they find their insertion.

The temporoparietal muscle is innervated by the temporal rami of the facial nerve.

The temporoparietal muscle stretches the galea aponeurotica and thus the scalp by pulling it dorsally.

The action of the temporoparietal and occipitofrontal muscles on the galea aponeurotica usually results in a gaping wound when the scalp is injured.

• Podcast image source: © Midjourney