Muscles of the Head & Neck | Anatomy, Motion & Support 7:56 5:58 Next Lesson Muscles of the Vertebral Column: Support & Movement Axial & Trunk Muscles | Overview & Anatomy 5:53 Shoulder Muscles | Anatomy, Functions & Movements 6:19 Arm Muscle Anatomy & Diagram 5:37 Forearm Mu...
These muscles are also involved in activities such as blinking and chewing. They work by joining the skull bones to different areas of skin, which are tugged as the muscles contract. The head is supported and moved by muscles that start at the backbone, shoulder blades, and bones in the ...
The masseter muscle primarily gets its vascular supply from the masseteric artery, a branch of the maxillary artery (formerly the internal maxillary artery). The maxillary artery comes off the external carotid artery behind the neck of the mandible. The maxillary artery divides into the mandibular,...
Muscle and Musculocutaneous Flaps: The Videotape. Head and Neck SeriesThis article describes the most common options available for reconstruction of the foot. The foot is considered a group of different regions, and it is helpful to classify it into four different anatomic and functional...
The LAO's primary function is to elevate the mouth's corners, achieved in concert with the zygomaticus major muscle. These muscles raise and lateralize the oral commissure, moving it obliquely, superiorly, and laterally. Variations in the contributions of these 2 muscles to the oral commissure'...
This muscle demarcates the posterior triangle of the neck (bounded by sternocleidomastoid, trapezius and the clavicle) from the anterior triangle (bounded by the right and left sternocleidomastoids on either side and by the mandible superiorly (Fig. 187). Fig. 187 The triangles of the neck. ...
Scalenes - on both sides of the neck. Shown above on LHS of neck only, shaded in two shades of green. Trapezius - lower part of diagram (the part of this muscle shown here is at the top of the shoulders). Omohyoid - neck muscle, shown shaded orange. Sternohyoid - towards the centr...
Neck muscle activity and perceived pain and discomfort due to variations of head load and posture. Aviat Space Environ Med 2004; 75:123131. Background: The increasing use of helmet-mounted displays in aviation raises issues of head-supported weight and neck musculoskeletal function, especially ...
A headrest ‘pushing’ the head forward could increase the muscle activity of the neck extension muscles (e.g. m. splenius, m. semispinalis and m. trapezius pars descendens). But at the same time head support may lower the tension on the flexion muscles (e.g. m. sternocleidomastoid, m...
Women frequently express heightened neck discomfort even though they exhibit smaller neck flexion (NF) during smartphone use. Differences in natural posture while using smartphones may result in varying muscle activation patterns between genders. However, no study focused on this issue. This study inves...