Muscle Anatomy Review

Frontalis (m. frontalis): Part of the epicranius; responsible for forehead movement and raising eyebrows.
Occipitalis (m. occipitalis): Located at the back of the skull, assists the frontalis.
Galea aponeurotica (14a): A tendinous layer connecting the frontal and occipital muscles.
Temporoparietalis (m. temporoparietalis): Contributes to movements around the temples.

Orbicularis oculi (m. orbicularis oculi): Circular muscle around the eye; functions in closing the eyelids.
- Orbicularis oculi, pars palpebralis (30): The part responsible for closing the eyelids gently.

Nasalis (m. nasalis): Facilitates movements of the nostrils.
Levator labii superiori (m. levator labii superiori): Raises the upper lip.
Levator nasi superior (m. levator nasi superior): Elevates the nostrils.
Zygomatic minor (m. zygomaticus minor): Helps in facial expressions, elevating the corner of the mouth.

Orbicularis oris (m. orbicularis oris): Encircles the mouth; responsible for closing and puckering lips.
Zygomatic major (m. zygomaticus major): Draws the mouth upwards and outwards.
Buccinator (m. buccinator): Compresses the cheek; aids in chewing.
Risorius (m. risorius): Draws the corner of the mouth laterally, as in grimacing.
Depressor anguli oris (m. depressor anguli oris): Pulls down the corners of the mouth.
- Also referred to as m. triangularis.
Depressor labii inferioris (m. depressor labii inferioris): Lowers the lower lip.
Levator menti (m. levator menti): Elevates the chin.
Masseter (m. masseter): Key muscle in chewing, facilitates the elevation of the mandible.

Sternocleidomastoideus (m. sternocleidomastoideus): Rotates and flexes the head; important accessory muscle for breathing.
Biventer (m. biventer): May refer to muscles involved in neck movement.
Stylohyoid (m. stylohyoid): Elevates the hyoid bone during swallowing.
Mylohyoideus (m. mylohyoideus): Forms the floor of the mouth, assists in swallowing.
Sternohyoideus (m. sternohyoideus): Lowers the hyoid bone after swallowing.
Thyrohyoid (m. thyrohyoid): Elevates the larynx and lowers the hyoid bone.
Omohyoid (m. omohyoid, superior venter): Depresses the hyoid bone.
Cuccularius (m. cuccularius): Less commonly mentioned muscle, possibly involved in neck dynamics.
Splenius capitis (m. splenius capitis): Aids in rotating and extending the head.
Levator scapulae (m. levator scapulae): Elevates the scapula.
Scalenus medius (m. scalenus medius): Aids in neck flexion and respiration.
Scalenus anterior (m. scalenus anterior): Similar to the medius in function but located anteriorly.
Complexus (m. complexus): Assists in head movements and posture.

Biceps Brachii (25): Primary muscle of the upper arm, facilitates flexion at the elbow.
Trapezius (14): Extends from the base of the skull to the lower thoracic vertebrae, helps move and stabilize the shoulder girdle.
Latissimus Dorsi (16): Large muscle in the back, responsible for movement of the shoulder.

Rectus Femoris (12): Part of the quadriceps group; extends the knee and flexes the hip.
Vastus Medialis (10) and Vastus Lateralis (11): Also part of the quadriceps; work to extend the knee.
Gracilis (13): Adducts the thigh and flexes the knee.
Adductor Longus (14) and Adductor Magnus (15): Responsible for thigh adduction.
Biceps Femoris: Comprises two heads, both important for knee flexion and hip extension.
Gastrocnemius (24): Major muscle in the calf, involved in plantar flexing the foot.

Tibialis Anterior (20): Dorsiflexes the foot and arches the foot.
Peroneus Longus (22) and Peroneus Brevis (23): Assist in plantar flexion and eversion of the foot.

The detailed anatomy of facial, neck, and limb muscles has been captured thoroughly, focusing on anatomical positions and primary functions. The document identifies individual muscles, categorizes them by region, and highlights their roles in the movement and stabilization of body parts.