Back anatomy The back is the body region between the neck and the gluteal regions. It comprises the vertebral column (spine) and two compartments of back muscles; extrinsic and intrinsic. The back functions are many, such as to house and protect the spinal cord, hold the body and head upri...
Bones of the Leg and Foot (Posterior View) × +− ◎ Click to View Larger Image Supporting, balancing, and propelling the body is the work of the muscular system of the legs and feet. From the large, strong muscles of the buttocks and legs to the tiny, fine muscles of the feet and...
Various conditions can impair extrinsic back muscle function. Additionally, understanding the anatomy of this muscle group is crucial for precise instrument placement during surgical procedures. This article discusses the anatomy and clinical importance of the extrinsic back muscles. Structure and Function S...
Change Current View Angle Muscles of the Head and Neck Superficial Muscles of the Head and Neck (Posterior View) Facial Expression Muscles Mastication Muscles Toggle Anatomy System Integumentary System of the Head and Neck (Posterior View) Bones of the Head and Neck (Posterior View)× +− ◎ ...
messages between the brain and the body. This is the medium through which it converts electrical signals into physical commands. After exiting, each nerve travels to its respective dermatome and innervates the muscles of that region. The spinal cord also uses the same neurotransmitters as in the...
Although back pain may be painful and uncomfortable, it is not usually serious. Even though back pain can affect people of any age, it is significantly more common among adults aged between 35 and 55 years. Experts say that back pain is associated with the way our bones, muscles and ...
Extensor muscle, any of the muscles that increase the angle between members of a limb, as by straightening the elbow or knee or bending the wrist or spine backward. The movement is usually directed backward, with the notable exception of the knee joint.
Intrinsic muscles stabilize the vertebral column and are located underneath the erector spinae; also known as the “deep” muscles of the back and control the movement and posture of the vertebral column. Superficial muscles are directly underneath the skin and attach to the bones of the shoulder...
2Anatomy 2.1Erector spinae and intrinsic back muscles The muscles of the back encompass three groups: superficial, intermediate and deep. The first two groups are classified as “extrinsicback muscles”. In contrast, the deep muscles develop embryologically in the back and thus are called “intrins...
Fortified by a network of ligaments bridging the mandible to the sphenoid and temporal bones, and bolstered by the muscles governing mastication, the TMJ assumes a critical role. This joint, however, resides within a delicate milieu, ensconced by vital structures that warrant meticulous care to pr...