Introduction The semispinalis thoracis muscle contains thin, narrow, fleshy fasciculi, interposed between tendons of considerable length. Semispinalis thoracis muscle consists of five fascicles bridging over five to six vertebral levels between the transverse and spinous processes of certain cervical vertebrae and thoracic vertebrae. With these attachments, semispinalis thoracis muscle aids several movements of the vertebral…
Introduction Splenius cervicis muscle is a paired back muscle found in the prevertebral space of the neck (Muscles on Back Of Neck). The Splenius cervicis muscle is one of the deep muscles of the cervical and thoracic spine. Its fibers run superiorly and laterally. It assists in ipsilateral(same side) cervical side flexion and rotation when…
Introduction the popliteus muscle is a major stabilizer of the knee jointThe popliteus is a small, thin, flat, triangular-shaped musculotendinous complex muscle that forms the floor of the popliteal fossa. It belongs to the deep posterior leg muscles, along with the tibialis posterior, flexor digitorum longus, and flexor hallucis longus muscles. It is a deep…
Introduction The diaphragm is an unpaired, dome-shaped skeletal muscle that is located inside the trunk. It is the primary muscle that is active in inspiration. Contraction of the diaphragm muscle facilitates the expansion of the thoracic cavity. This increases the volume of the cavity, which in turn reduced the intrathoracic pressure allowing the lungs to…
Introduction The fibular/peroneal muscles are the two muscles of the lateral compartment of the leg. These muscles are the fibularis longus and fibularis brevis. The peroneal muscles originate from the fibula and are inserted onto the plantar surfaces of certain tarsal and metatarsal bones. These muscles play an important role in the movements of the…
Introduction The hip adductors are a group of muscles located in the medial compartment of the thigh. These muscles include the adductor longus, adductor brevis, adductor Magnus, gracilis, and pectineus. Due to their position, the hip adductors shape the surface anatomy of the medial side thigh. More specifically, these muscles extend from the anteroinferior external…
What is a Spasticity? Spasticity is a motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with exaggerated tendon reflexes, resulting from hyper excitability of the stretch , as one factor of the upper motor neuron syndrome. Spasticity is loss in muscle movement patterns so that muscles contract all at once. Muscle movements…
Introduction of the facial muscle The facial muscles, also known as craniofacial muscles, are a group of about 20 flat skeletal muscles lying under the skin of the face and scalp. Most facial muscles originate from the bones or fibrous structures of the skull and radiate to insert on the skin. Muscle of the Scalp…
Introduction Superficial muscle of anterior compartment of the forearmThe muscles of the front of the forearm may be divided into superficial and deep groups of muscle. There are five muscles in the superficial muscle group. These are the pronator teres, the flexor carpi radialis, the palmaris longus, the flexor carpi ulnaris and the flexor digitorum…
Introduction The muscles of mastication move your mandible during mastication and speech. The muscles of mastication are the Masseter, the Temporalis, The Lateral pterygoid, and the medial pterygoid. They develop from the mesoderm of the first branchial arch and are supplied by the mandibular nerve which is the nerve of the branchial arch. The muscles…
