Anatomy of Levator Scapulae Muscle The levator scapulae muscle are superficial extrinsic muscles of the back that primarily function to elevate the scapulae. Levator comes from the Latin levare, meaning “to raise.” Scapulae refer to the scapulas, or shoulder blades, possibly originating from the Greek “skaptein,” meaning “to dig.” In conjunction with other posterior axial-appendicular…
Introduction The sternocleidomastoid muscle is one of the largest and most superficial cervical muscles. The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. The sternocleidomastoid is innervated by the accessory nerve. It is given the name sternocleidomastoid because it originates at the manubrium of…
Introduction Semimembranosus is one of four posterior thigh muscles that are responsible for extending the hip, while It is also one of the three muscles to make a part of the Hamstring muscles group. The other three muscles that belong to the hip extensor group are semitendinosus, biceps femoris, and gluteus maximus. These three muscles…
Biceps Femoris Muscle Anatomy Biceps femoris is a long muscle of the posterior aspect of the thigh. Together with the semitendinosus and semimembranosus muscles, it makes the group of muscles commonly known as the hamstrings. Biceps femoris muscle runs from the ischial tuberosity, all the way to the proximal part of the fibula. In doing…
Introduction The risorius is a muscle of facial expression that arises in the fascia over the parotid gland and, passing horizontally forward, superficial to the platysma, inserts onto the skin at the angle of the mouth. It is a narrow bundle of fibers, broadest at its origin, but varies much in its size and form….
Introduction: The mentalis is a paired central muscle of the lower lip, situated at the tip of the chin. It originates from the mentum and inserts into the chin soft tissue. The primary effect of the mentalis contraction is the upward-inward movement of the soft tissue complex of the chin, which raises the central portion…
Anatomy of Gluteus Minimus Muscle The gluteus minimus is a small triangular muscle located deep in the posterior region of the hip, spanning from the gluteal surface of the ilium to the proximal end of the femur. It belongs to the group of gluteal muscles, along with the gluteus maximus, gluteus medius, and tensor fasciae…
Corrugator Supercilii Muscle Anatomy The corrugator supercilii muscle is a facial muscle located in the forehead region. It plays a crucial role in facial expressions, particularly in frowning and creating vertical wrinkles between the eyebrows. The corrugator supercilii is a small, narrow, pyramidal muscle close to the eye. It is located at the medial end…
Introduction: The orbicularis oris muscle is a complex of muscles in the lips that encircles the mouth in Human anatomy. It is a sphincter, or circular muscle, but it is actually composed of four independent quadrants that interlace and give only an appearance of circularity. It is also one of the muscles used in the…
Introduction: The Buccinator muscle is a bilateral square-shaped muscle constituting the mobile as well as the adaptable cheek area. This muscle is sometimes referred to as an accessory muscle of mastication due to its role in compressing the cheeks inwards against molars, thus, aiding in chewing and swallowing. Due to its function of puffing out…
