mid fibers have an oblique orientation, and posterior fibers have a more of a horizontal orientation. The origin of the temporalis muscle spans from the temporal fossa to the inferior temporal line of the lateral skull. The temporalis muscle fibers converge inferiorly, forming a tendon...
The mylohyoid muscle derives from the first pharyngeal arch and is a member of the suprahyoid muscles. The first pharyngeal arch forms during the fourth week of gestation and directs the development of the midface and lower face. The arch is composed of the maxillary and mandibular processes....
The functional anatomy of the neck is a major component of an animal's postural and locomotor repertoire, yet remains poorly understood in part due to the anatomical complexity of the cervical musculoskeletal system. Here we use a new methodology to visualize and quantify aspects of muscle ...
2 Normal anatomy? Yes. In some patients, a neck “mass” is nothing more than a normal submaxillary gland or omohyoid muscle that has become prominent as a result of a slight enlargement or loss of surrounding fat. The key finding is a similar, but perhaps somewhat smaller mass in the ...
Be extra-cautious with massage guns:While many types of massagers are safe to use on your neck, avoid using a massage gun as a neck massager. While these devices are popular for larger muscle groups, using one near the arteries and important veins in and around the neck can be dangerous...
Musclestiffness(neck spasm) highlights the involvement of muscles:trapezitis, an inflammation of the trapezius muscle, ortorticollis, a fibrosis of sterno-cleido-mastoid muscle. Shooting pain, if present, tells us that the problem lies in the vertebrae or intervertebral discs. Vertebra can be damag...
A 2018 study in Clinical Anatomy used MRI to measure the cross sectional area of neck muscles in those with loss of the cervical curve. The authors found a significant relationship between neck muscle imbalance and loss of the normal curve (cervical lordosis). They indicated an exercise program...
We demonstrate how the computer-based technique of multi-body dynamics analysis (MDA) can be used to create schematic, but informative three-dimensional (3D) representations of complex muscle anatomy. As an example we provide an overview of the head and neck muscles present in Sphenodon (Diapsida...
The stylohyoid muscle consists of a single belly that runs anteroinferior from the styloid process to the hyoid bone.[1]It has the longest mean fiber bundle length of all the suprahyoid muscles.[1]In its origin, the stylohyoid muscle inserts through a small tendon into the posterior aspect...
The masseter muscle is one of the four muscles responsible for the action of mastication (chewing). When the masseter contracts it causes powerful elevation of the mandible causing the mouth to close. Its insertion along the angle and lateral surface of the ramus also allows it to aid in the...