Describe the medial pterygoid muscle with respect to origin, insertion, action, and innervation.
A) Origin: Medial pterygoid plate of sphenoid bone; Insertion: Medial surface of mandible; Action: Elevation and protraction of mandible; Innervation: Trigeminal nerve (V)
B) Origin: Temporal fossa; Insertion: Coronoid process of mandible; Action: Closes jaw; Innervation: Facial nerve (VII)
C) Origin: Frontal bone; Insertion: Occipital bone; Action: Raises eyebrows; Innervation: Facial nerve (VII)
D) Origin: Sternum; Insertion: Clavicle; Action: Flexes the neck; Innervation: Accessory nerve (XI)