The zygomaticus is a set of small muscles which travel via eye socket till the lips, beside the cheekbone. They attach with the zygomatic bone a.k.a. the cheekbone. The zygomaticus major directs the motion of upper lip outward and superiorly, and it especially controls smiling. It is activated when one frowns or shows sadness. The [...]
The procerus a.k.a. Pyramidalis nasi is a small muscle which is found superficial towards the nasal bone and operates while a person frowns. In order to create transverse wrinkles superior to the bridge of the nose, the procerus pulls the medial margin of the eyebrows inferior. Procerus (Pyramidalis Nasi) Origin The procerus muscle [...]
The nasalis is a muscle of the nose that contracts and dilates the nasal cartilages. It is made up of two parts, transverse/compressor and alar/dilator parts. It is structurally similar to a sphincter. Origin The muscle arises in the maxilla part of the skull and attaches within the nasal bone. The nasalis muscle is made [...]
The levator labii superioris a.k.a. quadratus labii superioris is a muscle of facial expression. It is a wide muscular sheet; its origin spreads out via the side of the nose till the zygomatic bone. Levator Labii Superioris Origin The levator labii superioris muscle has three points of origin that blend and pass into [...]
Levator labii superioris alaeque nasi is a muscle of facial expression which expands the nostrils and raises the upper lip, therefore helping in making the "sneer" facial expression. Levator Labii Superioris Alaeque Nasi Muscle Origin The levator labii superioris alaeque nasi muscle arises via the frontal process of the maxilla. Insertion It separates [...]
The depressor supercilii muscle is a facial muscle which is located in the eye region. But, instead of being a separate muscle a lot of anatomical experts assume it to be a portion of the orbicularis oculi muscle. Origin The depressor supercilii arises: From the medial orbital rim. From the fascia covering the lower part [...]
A transverse process is a bony protrusion which is located at the back of a vertebrae bone in the spine. There is one on both sides of every vertebra in the cervical, thoracic as well as lumbar spine. Structure Transverse processes of Cervical Vertebrae Transverse processes of Cervical Vertebrae The transverse processes are [...]
The temporalis muscle arises alongside the temporal lines of the parietal bone of the skull and it is a fan-shaped muscle. The muscle is located inside the temporal fossa. A robust fibrous aponuerotic sheath known as the temporalis fascia encloses it and travels medial towards the zygomatic arch. Origin It arises via: Entire [...]
The risorius muscle is thin and wispy. The angle of the mouth pulled outward by the risorius muscle. This muscle is situated nearby the mouth area and mainly it creates facial expressions. Origin Risorius originates via the superficial musculoaponeurotic system which has, parotid fascia, masseteric fascia, platysma, and rarely, via the tendon of [...]
The masseter is a dense quadrangular muscle enveloping the lateral surface of the ramus of the mandible together with its coronoid process. The masseter muscle is a powerful muscle of mastication that raises the mandible. It is located over the lateral side of the ramus of the mandible. Masseter Muscle Origin [...]