![]() It is also the motion of a particle about a fixed point. ![]() Sternocleidomastoid (SCM): flexion Flexion Examination of the Upper Limbs, extension Extension Examination of the Upper Limbs, and rotation Rotation Motion of an object in which either one or more points on a line are fixed.Skin: Structure and Functions of the neck Neck The part of a human or animal body connecting the head to the rest of the body. The epidermis is primarily composed of keratinocytes that undergo rapid turnover, while the dermis contains dense layers of connective tissue. ![]() The skin is primarily composed of the epidermis (outer layer) and dermis (deep layer). Jaw and Temporomandibular Joint: Anatomy and tenses the skin Skin The skin, also referred to as the integumentary system, is the largest organ of the body. ![]() Platysma: depresses the mandible Mandible The largest and strongest bone of the face constituting the lower jaw.Overview Anterior muscles of the neck Neck The part of a human or animal body connecting the head to the rest of the body. X-rays ), but the deep muscles also contribute to more intricate functions (i.e., speaking and swallowing Swallowing The act of taking solids and liquids into the gastrointestinal tract through the mouth and throat. Peritonsillar Abscess are mainly responsible for the movements of the head (i.e., extension Extension Examination of the Upper Limbs, flexion Flexion Examination of the Upper Limbs, lateral flexion-extension, and rotation Rotation Motion of an object in which either one or more points on a line are fixed. The muscles of the neck Neck The part of a human or animal body connecting the head to the rest of the body. Each of the groups is subdivided according to function and the precise location of the muscles. Peritonsillar Abscess can be divided into 3 groups: anterior, lateral, and posterior neck Neck The part of a human or animal body connecting the head to the rest of the body. Students: Educators’ Pro Tips for Tough Topics.Maternity Nursing and Care of the Childbearing Family.Diversity, Equity, Inclusion, and Belonging.The spinal column is made up of many parts, all designed to help the back move flexibly, support body weight and protect the spinal cord and nerves. Tumors, infection, trauma, deformity or other spinal disorders.Damage or disease to the discs that separate the vertebrae.Injuries to the bones, ligaments or joints.Strain of the large muscles of the back that hold the spine upright.Irritation of the smaller nerves of the spine that involve innervate or supply the discs between the vertebrae, facets and ligaments.Irritation of the large nerves as they exit the bony confines of the spine leading to the arms and legs.While many of us take the benefits of a healthy spine for granted, spinal pain is a sharp reminder of how much we depend on our back in daily life. The spinal column combines strong bones, unique joints, flexible ligaments and tendons, large muscles and highly sensitive nerves. Five bones in the lower back-the lumbar spine.12 bones in the chest-the thoracic spine.Seven bones in the neck-the cervical spine.The remaining small bones or ossicles below the sacrum are also fused together and called the tailbone or coccyx. It is made up of several vertebral bodies usually fused together as one. The bottom of the spine is called the sacrum. Sometimes a person may have an additional vertebra, which is called a transitional body and is usually found at the sixth level of the lumbar area (labeled L6). By the time a person becomes an adult most have only 24 vertebrae because some vertebrae at the bottom end of the spine fuse together during normal growth and development. The average person is born with 33 individual bones (the vertebrae) that interact and connect with each other through flexible joints called facets. The spine supports about half the weight of the body. Structural support for the body, allowing us to stand upright.It provides several important functions, including: The human spine is a complex anatomic structure that is the scaffolding for the entire body.
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