Musculus temporalis

The video tutorial provides a comprehensive overview of the temporalis muscle, covering its origin, anatomical structure, innervation, and functions. The temporalis is a fan-shaped muscle located on the lateral side of the skull, playing a crucial role in chewing. It originates from the temporal fossa and attaches to the coronoid process of the mandible. The muscle is innervated by branches of the mandibular nerve, part of the fifth cranial nerve. Functionally, the temporalis muscle is involved in jaw movements such as protrusion, retrusion, and adduction, making it the strongest chewing muscle. The tutorial also explains the muscle's role in lateral jaw movements.

Where does the temporalis muscle originate?

• Coronoid process

• Mandibular ramus

• Zygomatic arch

• Temporal fossa

Which nerve is responsible for the innervation of the temporalis muscle?

• Mandibular nerve

• Facial nerve

• Oculomotor nerve

• Optic nerve

What is the function of the anterior fibers of the temporalis muscle?

• Elevation of the jaw

• Lateral movement of the jaw

• Protrusion of the jaw

• Retrusion of the jaw

What happens when the temporalis muscle contracts on one side?

• The jaw moves laterally

• The jaw closes

• The jaw moves backward

• The jaw moves forward

Which movement is described as adduction in the context of the temporalis muscle?

• Moving the jaw forward

• Moving the jaw sideways

• Closing the jaw

• Opening the jaw