Musculus occipitofrontalis

Musculus occipitofrontalis is a muscle covering the cranial vault. It consists of two parts – the ventral part, which we call the frontalis muscle; from the dorsal part, which we call m. occipitalis. Together with m. temporoparietalis it forms m. epicranius.

Musculus frontalis (venter frontalis m. occipitofrontalis)

Origin: subcutaneous tissue and skin in glabella and eyebrow area; edges m. procerus, m. orbicularis oculi.

Insertion: galea aponeurotica.

Innervation: n. facialis.

Function:

• pulls the skin of the forehead cranially;
• helps lift the upper lid (attention, wonder);
• conditions horizontal forehead wrinkles.

Musculus occipitalis (venter occipitalis m. occipitofrontalis)

Origin: os occipitale – linea nuchalis suprema.

Insertion: galea aponeurotica.

Innervation: n. facialis.

Function:

• Moves galeu aponeuroticu posteriorly;
• helps pull the venter frontalis behind the upper lid + is its antagonist.

Links

References

• ČIHÁK, Radomír. Anatomie 1. 2. edition. Grada, 2001. 497 pp. ISBN 80-7169-970-5.

• HUDÁK, Radovan – KACHLÍK, David. Memorix anatomie. 2. edition. Triton, 2013. ISBN 978-80-7387-712-5.