Muscles, Origins, Insertions, And Actions

The buccinator muscle is responsible for compressing the cheek and has its origin and insertion as described in the question. The other muscles listed do not have the same origin, insertion, and action as the buccinator muscle.

The Depressor labii inferioris muscle originates from the mandible between the anterior midline and the mental foramen, inserts into the skin of the lip, and functions to depress the lower lip. The incorrect answers provided describe different muscles with origins, insertions, and actions that do not align with the Depressor labii inferioris.

The correct muscle for the given origin, insertion, and action is Levator labii superioris, as it is responsible for elevating the upper lip. The other muscles listed have different origins, insertions, and actions, making them incorrect choices.

The origin of the muscle Mentalis is the incisive fossa of the mandible, not the zygomatic arch, frontal bone, or sternum. It plays a role in elevating and protruding the lower lip.

The correct muscle that fits the description is the orbicularis oris, as it is responsible for compressing and pursing the lips, originating from the maxilla and mandible and inserting into the lips. The masseter, temporalis, and zygomaticus muscles do not have these specific origins, insertions, and actions related to compressing and pursing the lips.

The Risorius muscle is a facial muscle responsible for drawing the corner of the mouth to the side. Its origin is the fascia surrounding the parotid salivary gland, and its insertion is at the angle of the mouth.

The correct answer is Platysma, as it is the muscle that fits the description given in the question. The other options are incorrect as they do not match the specific origin, insertion, and action described.

The masseter muscle is responsible for elevating the mandible and closing the jaws. Its correct origin is the zygomatic arch with insertion on the lateral surface and angle of the mandibular ramus.

The Temporalis muscle originates along the temporal lines of the skull and inserts on the coronoid process of the mandible. Its action involves elevating the mandible and closing the jaws, allowing for actions like chewing and biting.

The pterygoids are responsible for movements related to the mandible, specifically elevating the mandible and closing the jaws or moving the mandible side to side.

The correct answer specifies the accurate origin, insertion, and action of the Medial Pterygoids, which include the lateral pterygoid plate and adjacent portion of palatine bone and maxilla as origin, medial surface of mandibular ramus as insertion, and the action of elevating the mandible, closing the jaws, or moving the mandible side to side.

The correct answer describes the specific details of the Lateral Pterygoids muscle, including its origin, insertion, and action. The incorrect answers provide inaccurate information about other muscles to test the understanding of the Lateral Pterygoids muscle.

The genioglossus muscle originates from the medial surface of the mandible around the chin, inserts into the body of the tongue and hyoid bone, and its action involves depressing and protracting the tongue. The incorrect answers provided do not accurately describe the origin, insertion, and action of the genioglossus muscle.

The Palatoglossus muscle is responsible for elevating the tongue and depressing the soft palate. Its origin is the anterior surface of the soft palate and insertion is the side of the tongue.

The Styloglossus muscle originates from the Styloid process of the temporal bone and inserts along the side to the tip and base of the tongue. Its main actions are to retract the tongue and elevate its sides.

The correct origin of the Pharyngeal constrictor muscles is the interior portion of the larynx, not the posterior portion of the pharynx, superior portion of the esophagus, or anterior portion of the trachea.

Palatopharyngeus is responsible for raising the larynx, aiding in functions like swallowing and speech production.

The correct answer provides the specific details of the origin, insertion, and action of Salpingophatyngeus muscle, which is essential for understanding its function and location within the body.

The Stylopharyngeus muscle originates from the Styloid process of the temporal bone, inserts into the thyroid cartilage, and its action is to elevate the larynx.

The correct answer describes the origin and insertion of the Digastric Anterior and Posterior belly accurately, along with its action. The incorrect answers provide misleading information about different origins, insertions, and actions that do not align with the actual function of this muscle.

The correct answer specifies the origin of the Geniohyoid muscle and its actions. The incorrect answers provide different muscle origins, insertions, and actions to test the knowledge of the examinee.

The mylohyoid muscle is responsible for elevating the floor of the mouth, elevating the hyoid bone, and/or depressing the mandible. This muscle plays an important role in various functions such as swallowing and speaking.

The Omohyoid muscle originates from the superior border of the scapula near the scapular notch, not from the medial border of the scapula, anterior aspect of the clavicle, or inferior angle of the scapula.

The Sternothyroid muscle originates from the dorsal surface of the manubrium and first costal cartilage, inserts into the thyroid cartilage of the larynx, and acts to depress the hyoid bone and larynx. The incorrect answers provide alternative origins, insertions, and actions that do not align with the actual characteristics of the Sternothyroid muscle.

The correct answer provides the accurate information about the origin, insertion, and action of the stylohyoid muscle. The incorrect answers are variations that do not align with the actual anatomical details of the muscle.

The thyrohyoid muscle originates from the Thyroid cartilage of the larynx and inserts into the Hyoid bone. Its action involves elevating the larynx and depressing the hyoid bone.

The sternocleidomastoid muscle originates from the clavicle and mastoid, inserting into the mastoid region of the skull and lateral portion of the superior nuchal line. It is responsible for flexing the neck and can bend the neck towards the shoulder and turn the face to the opposite side.

The clavicular head originates from the sternal end of the clavicle and inserts into the mastoid region of the skull and lateral portion of the superior nuchal line. Its actions include flexing the neck, bending the neck towards the shoulder, and turning the face to the opposite side.