The development of the extraocular muscles is dependent on the normal development of the eye socket, while the formation of the ligament is fully independent. General anatomy of skeletal muscle, its innervation and blood. They consist of longitudinal, transverse, and vertical fibers. Via tendo calcaneus into posterior surface of calcaneum. The actions of the six muscles responsible for eye movement depend on the position of the eye at the time of muscle contraction. I s a thick quadrilateral muscle covering the lateral surface of ramus of mandible origin. Muscle, origin, insertion, action, innervation, artery, notes, image. C7, t112 clavicle lateral scapula acromnion and spine upper fibers. The nerve supply comes from the dorsal scapular nerve, with most of its fibers derived from the c5 nerve root and only minor contribution from c4 or c6. Muscles of anterior compartment leg simple, quick revision of origin, insertion, action and nerve supply of tibialis anterior, extensot hallucis longus, extensor digitorum longus, peroneus tertius, sructures passing deep to extensor retinaculum, anterior compartment syndrome, dorsiflexors, deep peroneal nerve. Raises medial border of scapula upward and medially.
This sphincterlike muscle is located around the circumference of the mouth. Posterior part of calcaneum nerve supply tibial nerve l4, l5, s1. Medial border of scapula between the spine of scapula and inferior angle. Lamina and spinous processes of the immediately superior vertebrae. They are chiefly liable for actions such as inversion, eversion, plantar flexion, and dorsiflexion of the foot. Insertion medial border of the scapula above the level of the scapula spine.
Action medial border of scapula stabilizes depresses lateral view innervation. Tibial nerve s1,s2 function action of gastronemius muscle. These two nerves that supply the subscapularis are branches from the posterior cord of the brachial plexus. While other shoulder muscles are active, the rhomboid major and minor stabilize the scapula. The rectus abdominis is an important postural muscle, flexion of the. Muscle origin insertion nerve supply blood supply action image the tibialis anterior lateral surface of the shaft of tibia. Oanterior superior iliac spine iwinds around medial aspect of knee and inserts into medial aspect of proximal tibia.
The pectoral girdle connects the upper limb to the axial skeleton on the right and side left of the body. Muscles in the forearm move the hand at the wrist andor the fingers. Distinguish between intrinsic and extrinsic muscles. Muscles of the lower limb muscle origin insertion action. The occipitofrontalis muscle elevates the scalp and eyebrows. Together with the rhomboid major, the rhomboid minor. Next to each muscle, youll find its origin s, insertion s, innervations and functions. The sartorius muscle is the longest muscle in the body. Muscle name origin insertion action innervation muscles of. Muscles of mastication, origin, insertion, action and. Trapezius muscle action, origin and insertion, nerve and. Explain how the latin names of muscles can aid in visualizing and remembering them.
The extrinsic muscles of the foot arise from the anterior, posterior and lateral compartments of the leg muscles. Posterior margin of mastoid process and the temporal bone. In our cheat sheets, youll find the origin s and insertion s of every muscle. Muscles stabilizing pectoral girdle muscles of the upper limb. General anatomy of skeletal muscle general features of striated muscle, its auxiliary structures, motor end plate, motor unit, muscle spindle, golgi tendon organ attachments of skeletal muscles origin, insertion muscle fibres, myofibrils, sarcomeres naming of muscles shape and fibre architecture, pennation the endomysial and perimysial sheaths. This can lead to sciatica symptoms due to a condition known as piriformis syndrome. The trapezius muscle trapz is a large muscle consisting of four parts covering the upper back, shoulders, and. Muscles of the arm origin, insertion,nerve supply and action.
The extraocular muscles are the six muscles that control movement of the eye and one muscle that controls eyelid elevation levator palpebrae. Anterior compartment of leg, muscles, their action and. Extrinsic muscles of the wrist and hand originate on the forearm, not the wrist or hand. Canine muscle origins, insertions, actions and nerve innervations.
It is inserted on rough area on the medial surface of angle of mandible. To download pdf for mcqs in physiotherapy visit physioacademy st. Lingual artery and submental branches of the facial artery. Use location of insertion to determine movement page 9. Flexion of the interphalangeal and metacarpophalangeal joints of the thumb. Hip muscles origin, insertion, action and exercises. Tongue mucosa, with the most inferior fibres inserting into the hyoid bone. The gastrocnemius is a powerful plantar flexor of the foot at the talocrural joint. Muscle origin insertion action innervation artery notes image. Muscles description, origin and insertion, action, and.
Sheath of deep fascia attached to the posterior border of the ulna. Canine muscle origins, insertions, actions and nerve innervations the purpose of this document is to provide students of canine anatomy a simple reference for muscular origins, insertions, actions and nerve innervations without having to search through the overwhelming verbiage that accompanies most canine anatomy texts. Muscles moving thigh anterior muscles of the lower limb. The muscle extends from the medial third of the superior nuchal line to the spine of c7 vertebra. Muscles description, origin and insertion, action, and nerve. Muscle origin insertion nerve supply blood action image. Origin insertion primary action secondary action tertiary action medial rectus. The muscle origin often describes the more proximal attachment point of the muscle, while the muscle insertion point refers to the distal attachment. The muscles of the foot can be separated into two distinct groups. General anatomy of skeletal muscle, its innervation and.
Muscle origin insertion nerve supply action s flexor pollicis longus upper anterior surface of radius and interosseous membrane palmar surface of distal phalanx of the thumb anterior interosseous branch of median nerve c8, t1 flexion of the wrist joint. By nerve to medial pterygoid, a branch from trunk of mandibular nerve. The shoulder girdle is also known as the pectoral girdle. Replace figure with one that includes all muscles from table for example figure 10. Origin insertion action innervation shoulder origin insertion. The muscle has a frontal belly and an occipital belly near the. Lateral surface of vocal processes of arytenoid cartilage. Tenses anterior part and relaxes posterior part of vocal ligament. Sep 11, 2018 scalenus anterior it lies deeply at the side of the neck, behind the sternocleidomastoid muscle. The main function of this muscle is to move the body between the ribcage and the pelvis.
The arm region is comprised of many powerful muscles responsible for movements of the upper limb. Posterior surface of transverse processes of t1 to t5 and the articular tubercle of c4 to c7. Posterior surface of the calcaneus via the calcaneal tendon. Medial margin of the scapula at the roof of the scapular spine. Next to each muscle, youll find its origin s, insertion s, innervation s and functions. Tendons of forearm muscles typically are surrounded by tendon synovial sheaths and held adjacent to the skeletal elements by strong fascial structures. Muscles of mastication, origin, insertion, action and nerve. The sartorius muscle is positioned more superficially than the other in the leg muscles. Dorsal rami of cervical and thoracic spinal nerves c6 to t4. The muscles are most prominent in the thoracic region. Actions scapula elevation, lateral flexion of the cervical spine each side independently, extension of the cervical spine each side independently which nerves supply this muscle. Recurrent laryngeal nerve, external laryngeal nerve.
Many muscles are attached to bones at either end via tendons. Plantaris muscle origin insertion distal part of lateral supracondylar line of the femuroblique popliteal ligament of the knee joint. Oct 14, 2020 genioglossus is a fanshaped muscle that accounts for most of the body of the tongue. Table 103 muscles of facial expression and of mastication. Tongue anatomy muscles, innervation, blood supply geeky. Canine muscle origins, insertions, actions and nerve. Describe, in general terms, the nerve supply to the muscles and where these nerves originate.
Human anatomy and physiology superficial muscles of the back muscle origin insertion action nerve and blood supply trapeziums skull. Medial half of clavicle, front of sternum, costal cartilage. This pdf document has been placed online for your enjoyment and i hope you find it. Muscle name origin insertion action innervation muscles of upper extremity pectoralis major medial half of clavicle, front of sternum, costal cartilage crest of greater tubercle lateral lip of bicipital groove horizontally adduct, medially rotate at shoulder medical and lateral pectoral. Muscle origin insertion nerve supply blood supply action image plantaris tibial nerve. Muscle origin insertion nerve supply action muscles of the tongue alter the shape of the tongue hypoglossal nerve xiiconfined to the tongue and are not attached to bone. Apr 29, 2020 trapezius origin and insertion the origin of trapezius is very extensive, arising in the midline from the skull to lower thorax and then converges on the outer part of the pectoral girdle. A site for intramuscular injection because its bulky muscle. The sciatic nerve passes underneath this muscle on its route down to the posterior thigh. The rhomboid minor arises from the inferior border of the nuchal ligament, from the spinous processes of the seventh cervical and first thoracic vertebrae, and from the intervening supraspinous ligaments it is inserted into a small area of the medial border of the scapula at the level of the scapular spine action. Muscular branches of the occipital artery from the external carotid artery. Subscapularis muscle action, origin, insertion, nerve and. The orbicularis oris is a circular muscle that moves the lips, and the orbicularis oculi is a circular muscle that closes the eye. The upper and lower subscapular nerves derived from the c5, c6 and c7 cervical segments of the spinal cord c6 being the main segmental innervation.
Jul 16, 2015 muscle proximal attachment origin distal attachment insertion innervation main actions blood supply muscle group inferior oblique anterior floor of orbit lateral to nasolacrimal canal lateral sclera deep to lateral rectus oculomotor nerve cn iii, inferior division abducts, elevates, and laterally rotates eyeball. Shoulder flexion, medial rotation, horizontal adduction. Muscles origin, insertion, action and nerve supply. Trapezius origin and insertion arm anatomy the origin. Hence the subsequent nerve supply innervation of the eye muscles is from three cranial nerves. Describe the ways that muscles work in groups to aid, oppose, or moderate each others actions. Supraspinous fossa of the scapula above the spine on. Intrinsic muscles extrinsic muscles protrudes apex of tongue through mouth blends with each other superior genial. Muscles connecting the upper limb to the vertebral column. It takes origin from the inferior border of anterior 23 rd of zygomatic arch and medial surface of zygomatic arch. The muscle divides into 4 tendons which pierce the tendons of the flexor digitorum superficialis and are inserted into the bases of the distal phalanges of the medial 4 fingers. It is inserted on the lateral surface of ramus of mandible and angle of mandible.
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