Genioglossus muscle :-

Genioglossus muscle :- muscle details :- one of the paired extrinsic muscles of the tongue. The genioglossus is the major muscle responsible for protruding (or sticking out) the tongue. origin :- Superior part of mental spine of mandible (symphysis menti) . Insertion :- Underside of tongue and body of hyoid… Continue reading

Arytenoid muscle :-

Arytenoid muscle :- muscle details :- a single muscle, filling up the posterior concave surfaces of the arytenoid cartilages. origin :- Arytenoid cartilage on one side . Insertion :- Arytenoid cartilage on opposite side . Nerve :- recurrent laryngeal branch of the vagus . Actions :- approximate the arytenoid cartilages… Continue reading

Cricothyroid muscle :-

Cricothyroid muscle :- Muscle details :- the only tensor muscle of the larynx aiding with phonation. origin :- Anterior and lateral cricoid cartilage . Insertion :- Inferior cornu and lamina of the thyroid cartilage . Nerve :- External branch of Superior laryngeal nerve (branch of the vagus nerve) . Actions… Continue reading

Salpingopharyngeus muscle :-

Salpingopharyngeus muscle :- muscle details :- arises from the superior border of the medial cartilage of the pharyngotympanic tube (Eustachian tube), in the nasal cavity, making the posterior welt of the torus tubarius, it passes downward and blends with the posterior fasciculus of the palatopharyngeus muscle . origin :- Lower… Continue reading

Stylopharyngeus muscle :-

Stylopharyngeus muscle :- muscle details :- a muscle in the head that stretches between the temporal styloid process and the pharynx. origin :- Styloid process (temporal) . Insertion :- thyroid cartilage (larynx) . Nerve :- glossopharyngeal nerve (CN IX) . Actions :- elevate the larynx, elevate the pharynx, swallowing .

Pronator quadratus muscle :-

Pronator quadratus muscle :- Muscle details :- a square shaped muscle on the distal forearm that acts to pronate (turn so the palm faces downwards) the hand . origin :- medial, anterior surface of the ulna . Insertion :- lateral, anterior surface of the radius . Nerve :- median nerve… Continue reading

Rectus femoris muscle :-

Rectus femoris muscle :- Muscle details :- one of the four quadriceps muscles of the human body. The others are the vastus medialis, the vastus intermedius (deep to the rectus femoris), and the vastus lateralis. All four parts of the quadriceps muscle attach to the patella (knee cap) via the… Continue reading