Introduction : The superior rectus is one of the 7 extraocular muscles. There is a total of 4 rectus muscles, 2 oblique muscles, and the levator palpebrae superioris. The superior rectus is one of the 4 rectus muscles, which also include the superior rectus, the medial rectus, and the lateral rectus. The oblique muscles are…
Introduction The superior oblique is one of the two significant oblique extraocular muscles. These muscles are distinctive in that they do not originate from the common tendinous ring, have an angular attachment to the eyeball, and connect to the posterior aspect of the eyeball. The superior oblique function explicitly moves the eye in the down-and-out…
Introduction Latin musculus depressor supercilii Anatomical terms of muscle : The depressor supercilii muscle is found near the eye, and it’s thought to assist in moving and lowering the eyebrow. Also, it’s thought to assist in moving the glabella, which is the skin above the nose and between the eyebrows. The depressor supercilii is an…
Introduction The stapedius muscle is a muscle within the ear that support the stapes bone of the inner ear. It’s the very small skeletal muscle in the body. It plays an important role in hearing. It is Shaped like a sickle, the stapedius muscle is also described as the smallest skeletal muscle in the human…
Introduction Extraocular muscles are essential for ocular movement. The four rectus muscles, superior oblique muscle, and inferior oblique work in conjunction to move the eyes in every direction. The inferior oblique is a thin, narrow eye muscle and belongs to the group of six extraocular muscles or the orbit’s extrinsic muscles. The inferior oblique muscle…
Introduction The musculocutaneous nerve is a terminal branch of the lateral cord of the brachial plexus that carries fibers of cervical spinal nerves five along seven (i.e., C5, C6, & C7). The musculocutaneous nerve leaves the axilla & rapidly descends into the coracobrachialis muscle fibers. The musculocutaneous nerve supplies the biceps brachii & brachialis muscles…
The sacral plexus is a network of nerve fibers that supply the skin & muscles of the pelvis & lower limb. the sacral plexus is present on the surface of the posterior pelvic wall, anterior to the piriformis muscle. The plexus is formed by the anterior rami (divisions) of the sacral spinal nerves S1, S2,…
Introduction The levator palpebrae superioris originates from an inferior surface of the lesser wing of the sphenoid bone, just above an optic foramen. It enlarges and decreases in thickness (becomes thinner) and becomes the levator aponeurosis. This portion is inserted on the skin of the upper eyelid, as well as the superior tarsal plate. It…
What is the Occipitofrontalis Muscle? Occipitofrontalis is a scalp muscle that is long and wide muscle. This muscle and the temporoparietalis are both the epicranial group of the facial expression muscles. The muscles of facial expression enable the face to perform different unique movements, from smiling and frowning to raising one or both eyebrows in…
Introduction There is a total of twenty-three discs within the human spine: six in the cervical region (neck), twelve in the thoracic region (middle back), and five in the lumbar region (lower back). The intervertebral disc (IVD) is the main in the normal functioning of the spine. It is a cushion of fibrocartilage or the…
