Superficial Posterior Compartment : Gastrocnemius Muscle : Gastrocnemius forms the major bulk at the back of lower leg and is a very powerful muscle . The gastrocnemius muscle (plural gastrocnemii) is a superficial two-headed muscle that is in the back part of the lower leg of humans. It runs from its two heads just above…
Introduction The procerus muscle is a small facial muscle located between the eyebrows and the bridge of the nose. It is responsible for causing the skin to wrinkle vertically, which results in the formation of horizontal lines on the forehead. The procerus muscle is a pyramidal-shaped muscle of facial expression part of the glabellar complex….
INTRODUCTION: The nasalis is a sphincter-like muscle of the nose whose function is to compress the nasal cartilages. It is the muscle responsible for “flaring” of the nostrils. Some people can use it to close the nostrils to prevent the entry of water when underwater. Origin: Maxilla Insertion: Nasal bone Nerve: Buccal branch of the…
Introduction Origin Insertion Glutes medius is divided into three portions similar to the deltoid muscle of the shoulder joint: Nerve Supply The gluteus medius is supplied by the superior gluteal nerve (root L4, L5, and S1). Cutaneous supply is mainly provided by L1 and 2. Blood Supply Deep branch of superior gluteal artery, trochanteric anastomosis….
Introduction The orbicularis oculi is a muscle in the face that closes the eyelids. It arises from the nasal part of the frontal bone, from the frontal process of the maxilla in front of the lacrimal groove, and from the anterior surface and borders of a short fibrous band, the medial palpebral ligament. From this…
Gluteus Maximus Muscle Anatomy The gluteus maximus is the main extensor muscle of the hip. It is the largest and outermost of the three gluteal muscles and makes up a large part of the shape and appearance of each side of the hips. Its thick fleshy mass, in a quadrilateral shape, forms the prominence of…
Soleus Muscle Anatomy In humans and some other mammals, the soleus is a powerful muscle in the back part of the lower leg (the calf). It runs from just below the knee to the heel and is involved in standing and walking. It is closely connected to the gastrocnemius muscle. the soleus is responsible for…
INTRODUCTION : The glossopharyngeal nerve, known as the ninth cranial nerve (CN IX), is a mixed nerve that carries afferent sensory and efferent motor information. It exits the brainstem out from the sides of the upper medulla, just anterior (closer to the nose) to the vagus nerve. Sensory: Innervates the oropharynx, carotid body and sinus,…
INTRODUCTION : The abducens nerve (or abducent nerve) is the sixth cranial nerve (CNVI), in humans body that controls the movement of the lateral rectus muscle, responsible for outward gaze. It is a somatic efferent nerve. ANATOMY OF ABDUCENS NERVE : The abducens nerve arises from the abducens nucleus in the pons of the brainstem….
INTRODUCTION: The frontalis muscle is a thin, wide, four-sided muscle located at the top front of the skull. The frontalis muscle only serves for facial expressions. It lifts the eyebrows while looking up thus creating a expression. ORIGIN: It originates from the Galea aponeutorica. INSERTION: This muscle has no bony attachments. The medial fibers continues…
