Match the muscle names in column B to the facial muscles described in column A. Column A  ______ (1) squints the eyes  ______ (2) raises the eyebrows  ______ (3) smiling muscle  ______ (4) puckers the lips  ______ (5) pulls the scalp posteriorly Column B a. corrugator supercilii b. depressor anguli oris c. frontal belly of epicranius d. occipital belly of epicranius e. orbicularis oculi f. orbicularis oris g. zygomaticus

Verified step by step guidance

1. Identify the function of each muscle in Column B based on anatomical knowledge.
2. Match the muscle that 'squints the eyes' with the muscle responsible for closing the eyelids, which is the orbicularis oculi.
3. Match the muscle that 'raises the eyebrows' with the muscle located on the forehead, which is the frontal belly of the epicranius.
4. Match the 'smiling muscle' with the muscle that elevates the corners of the mouth, which is the zygomaticus.
5. Match the muscle that 'puckers the lips' with the muscle that encircles the mouth, which is the orbicularis oris.

Key Concepts

Facial Muscles

Facial muscles are a group of muscles that control facial expressions. They are primarily innervated by the facial nerve (cranial nerve VII) and include muscles responsible for actions such as smiling, frowning, and squinting. Understanding the specific functions of these muscles is essential for identifying them based on their actions.

Muscle Actions

Each facial muscle has a specific action associated with it, which is crucial for matching them to their descriptions. For example, the orbicularis oculi is responsible for squinting, while the zygomaticus is involved in smiling. Recognizing these actions helps in accurately pairing the muscles with their corresponding functions.

Anatomical Terminology

Anatomical terminology provides a standardized language for describing the location and function of muscles. Terms like 'pucker' and 'raise' are essential for understanding the actions of facial muscles. Familiarity with this terminology aids in effectively interpreting the descriptions provided in the question.