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…
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…
Introduction The intrinsic muscles of the hand serve the function of adjusting the hand during gripping and also for carrying out fine skilled movements. The origin and insertion of intrinsic muscles are within the territory of the hand.There are 20 muscles in the hand. These are: Four thenar musclesAbductor pollicis brevisFlexor pollicis brevisOpponents pollicisAdductor pollicis…
Introduction The muscles in the Back of the forearm muscles (posterior compartment of the forearm) are commonly known as the extensor group of muscles. The general function of these muscles is to perform extension at the wrist and fingers joints. They all are innervated by the radial nerve. Anatomically, the muscles in the posterior compartment…
What are Muscles Of Back Of Upper Arm? Muscles Of Back Of Upper Arm (The posterior (extensor) compartment of the upper arm) contains mainly the triceps brachii muscle. Even though the anconeus muscle is not anatomically located in the upper arm region, it is often considered to be a part of this muscle group. This…
What muscles are in the back of the neck? The muscles on the Back of the neck are muscles that cover the neck area. The neck muscles are part of a complex musculoskeletal system that connects the base of your skull to your torso. muscles of the neck are mainly responsible for the movement of…
