Cricoarytenoid Posterior Muscles Anatomy The posterior cricoarytenoid muscle is a crucial component of the laryngeal musculature, playing a vital role in vocal function and respiration. Situated within the larynx, this paired muscle originates from the posterior surface of the cricoid cartilage and inserts onto the muscular process of the arytenoid cartilage. Its primary function is…
Palatopharyngeus Muscle Anatomy The palatopharyngeus muscle is a small muscle in the roof of the mouth. It is a long and fleshy fasciculus, narrower in the middle than at either end of the forming with the mucous membrane covering its surface & the palatopharyngeal arch. Structure: It is separated from the palatoglossus muscle by an…
Palatoglossus Muscle Anatomy Structure Palatoglossus arises from the palatine aponeurosis of the soft palate, where it is continuous with the muscle of the opposite side, and passing downward, forward, and lateralward in front of the palatine tonsil, is inserted into the side of the tongue, some of its fibers spreading over the dorsum, and others…
Palatine Uvula Muscle Anatomy The muscular part of the uvula shortens and broadens the uvula. This changes the contour of the posterior part of the soft palate. This change in contour allows the soft palate to the posterior pharyngeal wall to help close the nasopharynx during swallowing. It is supplied by the pharyngeal branch of…
Tensor Veli Palatini Muscle Anatomy Tensor veli palatini muscle is a broad, thin, ribbon-like muscle in the head that tenses the soft palate. Along with the levator veli palatini, palatoglossus, palatopharyngeus, musculus uvulae, salpingopharyngeus, stylopharyngeus, superior pharyngeal constrictor, middle pharyngeal constrictor, and inferior pharyngeal constrictor, it is a member of the soft palate and pharyngeal…
Levator Veli Palatini Muscle Anatomy Levator veli palatini muscle is a paired cylindrical muscle located lateral to the choanae of the nasal cavity, starting from the petrous part of the temporal bone to the superior part of the palatine aponeurosis. with other muscles like tensor veli palatini, palatoglossus, palatopharyngeus muscles, and musculus uvulae, levator veli…
Levator labii superioris alaeque nasi muscle Anatomy The levator labii superioris alaeque nasi muscle, often referred to as the levator labii superioris muscle, is a facial muscle located in the upper lip region. It plays a crucial role in facial expression and is part of the complex network of muscles responsible for controlling movements around…
Inferior oblique muscle is a thin, narrow muscle placed near the anterior margin of the floor of the orbit. It is one of six extraocular muscles that help to do eye movements. Extraocular muscles are important for eye movement. The four rectus muscles, superior oblique, and inferior oblique muscles work together to move the eyes…
Superior Oblique Muscle Anatomy Origin Insertion Nerve supply Blood Supply Actions Relations: Assessment Clinical evaluation of all the extraocular muscles is often performed by having the patient track the clinician’s finger in the air in the shape of an “H.” The superior oblique muscle can be isolatedly tested by having the patient glance inward and…
Inferior rectus muscle Anatomy Origin Insertion Nerve supply Blood supply: Venous Drainage Venous drainage discharges into the superior and inferior orbital veins, functioning similarly to the artery system. The superior and inferior rectus muscles’ lateral and medial sides are home to the four vortex veins that are typically present. The orbital venous system receives the…
