Anatomy Of Facial Muscles Quiz

The correct answer is "Closure and protrusion of lips." The Orbicularis Oris is a muscle located around the mouth that is responsible for closing and protruding the lips. It is involved in various actions such as kissing, whistling, and forming words while speaking. It also helps in keeping the lips sealed and preventing food or liquid from escaping the mouth. This muscle does not elevate the upper lip or compress the cheek, making those options incorrect.

The correct answer is "Draws back scalp, wrinkles forehead, raises eyebrows." The epicranius muscle is responsible for these actions. It helps in drawing back the scalp, which causes the forehead to wrinkle and the eyebrows to raise. This muscle is important for facial expressions and is involved in various emotions and nonverbal communication.

The Occipital Belly of the Epicranius muscle is responsible for drawing back the scalp and aiding the frontal belly to wrinkle the forehead and raise the eyebrows. This muscle also helps in raising the ears and tightening the scalp. It does not have any role in drawing the eyebrows downward and medially.

The levator Anguli Oris is a muscle located in the face that is responsible for elevating the corner of the mouth. It helps to create a smile or a smirk by pulling the corner of the mouth upwards. This muscle does not have any role in drawing the mouth upward or compressing the cheek. Therefore, the correct answer is "Elevates the corner of the mouth."

The masseter is a powerful muscle located in the jaw that is responsible for elevating the mandible or lower jaw. It helps in closing the mouth and is involved in the biting action. Therefore, the correct answer is "Elevates mandible, closes mouth, biting."

The correct answer is "Gentle closure of eyelids." The orbicularis oculi muscle is responsible for closing the eyelids. It is a circular muscle that surrounds the eye and helps in blinking and closing the eyelids gently. It is involved in protecting the eye from foreign objects and helps in spreading tears over the surface of the eye.

The procerus muscle is responsible for drawing down the medial part of the eyebrows and wrinkling the nose. It is located between the eyebrows and plays a role in facial expressions such as frowning or expressing displeasure. This muscle does not have any effect on the lateral part of the eyebrows or the constriction of the nares (nostrils).

The Levator Labii Superioris muscle is responsible for elevating the upper lip, dilating the nares (nostrils), and forming the nasolabial furrow. It does not elevate the corner of the mouth or draw the mouth upward.

The orbital part of the orbicularis oculi muscle is responsible for strong closure of the eyelids. This muscle contracts forcefully to close the eyelids tightly, providing protection to the eyes from external factors such as dust, debris, and bright light. It also plays a role in blinking and maintaining the moisture of the eyes.

The zygomaticus major is a facial muscle that is responsible for drawing the angle of the mouth upward and backward. When this muscle contracts, it pulls the corners of the mouth towards the ears, creating a smile or a smirk. This action is important in expressing happiness or amusement.

The corrugator supercilii is a muscle located in the forehead region. Its primary action is to draw the eyebrows downward and medially, causing a frowning or furrowing effect. This muscle is responsible for expressing negative emotions such as anger or concern. It works in opposition to other muscles that raise the eyebrows, allowing for a range of facial expressions.

The lacrimal part of the orbicularis oculi muscle is responsible for drawing the lacrimal canals onto the surface of the eye. This muscle helps to direct tears towards the canals, which then drain into the lacrimal sac and ultimately into the nasal cavity. This action is important for the proper drainage of tears and maintaining the moisture of the eye.

The correct answer is "Both parts maintain opening of external nares during forceful inspiration." The term "nasalis" refers to the muscles that are responsible for maintaining the opening of the external nares (nostrils) during forceful inspiration. These muscles help to ensure that enough air can enter the nasal cavity during intense breathing. The other options mentioned, such as constricting nares, wrinkling the nose, and wrinkling the mouth, are not functions of the nasalis muscles.

The temporalis muscle is responsible for elevating and retracting the mandible, which helps in closing the mouth and biting. It contracts to lift the mandible upwards, allowing the teeth to come together and close the mouth. Additionally, it also helps in retracting the mandible, pulling it back towards the skull.

The correct answer is "Raises ears, tightens scalp." The temporoparietalis muscle is responsible for both raising the ears and tightening the scalp. This muscle is located in the temporal region of the head and helps in various facial expressions and movements. When the muscle contracts, it pulls the scalp backward, resulting in the tightening of the scalp. Additionally, it also contracts to elevate the ears, helping to adjust their position.

The Depressor Anguli Oris is a muscle that is responsible for depressing the angle of the mouth, causing a frowning expression. This muscle is not involved in the movement of the eyes or in grinning or grimacing. Therefore, the correct answer is that the depressor Anguli Oris depresses the angle of the mouth, as in frowning.

The buccinator muscle is responsible for compressing the cheek. This muscle helps in actions such as blowing air out of the mouth, sucking, and keeping food between the teeth during chewing. When the buccinator muscle contracts, it narrows the space inside the cheek, causing compression. This compression is important for various functions such as swallowing, speaking, and maintaining oral hygiene.

The mentalis muscle is responsible for raising and protruding the lower lip, as well as wrinkling the skin of the chin. This muscle helps in expressions such as pouting or expressing doubt or uncertainty. It does not raise the upper lip, as mentioned in the other options.

The depressor Labii Inferioris is a muscle located in the lower lip region. Its main function is to draw the lower lip downward and laterally. This means that it pulls the lower lip in a downward direction and also towards the sides. The other options, such as drawing the lower lip upward or none of these, do not accurately describe the action of the depressor Labii Inferioris muscle.

The correct answer is "Draws ear forward, in some individuals moves scalp." The auricularis anterior muscle is responsible for drawing the ear forward in some individuals and also has the ability to move the scalp.

The auricularis superior muscle is responsible for drawing the ear upward in some individuals. Additionally, it also moves the scalp. Therefore, the correct answer is "Draws the ear upward, in some individuals moves the scalp.

The depressor septi is a muscle located in the nose that is responsible for constricting the nares, or the nostrils. This muscle helps to maintain the opening of the external nares during forceful inspiration, allowing for proper airflow. Additionally, the depressor septi also plays a role in wrinkling the nose. Therefore, the correct answer is that the depressor septi constricts the nares.

The risorius is a facial muscle that is responsible for retracting the angle of the mouth, particularly in grinning. This muscle helps to pull the corners of the mouth sideways, creating a wide smile or grin. It is not involved in retracting the angle of the mouth in frowning or smiling, nor is it responsible for retracting the angle of the nose. Therefore, the correct answer is that the risorius retracts the angle of the mouth, as in grinning.

The auricularis posterior muscle is responsible for drawing the ear upward in some individuals. This muscle is located behind the ear and its contraction can cause the ear to move in an upward direction. It is important to note that not all individuals have this muscle or may not experience this movement of the ear.

The zygomaticus minor is a facial muscle that is responsible for forming the nasolabial furrow. This furrow is the crease that runs from the side of the nose to the corner of the mouth. When the zygomaticus minor contracts, it pulls the corner of the mouth upward, causing the formation of this furrow. Therefore, the correct answer is that the zygomaticus minor forms the nasolabial furrow.