1.
In the picture above, identify "D"- muscle and it's action.
Correct Answer
D. Sternohyoid: retracts the hyoid
Explanation
The correct answer is Sternohyoid: retracts the hyoid. The Sternohyoid muscle is responsible for pulling the hyoid bone downwards and backwards, helping to retract it. This action is important for swallowing and speaking.
2.
What is the origin and insertion of the muscle labeled "A"?
Correct Answer
B. Origin: Lateral portion of the thyroid cartilage of the larynx; Insertion: Hyoid bone
3.
The muscle that originates at the first costal cartilage, inserts at the thyroid cartilage of the larynx, and works in retracting the larynx is the ____________
Correct Answer
sternothyroid
Explanation
The sternothyroid muscle originates at the first costal cartilage and inserts at the thyroid cartilage of the larynx. Its main function is to retract the larynx. Therefore, the sternothyroid muscle is the correct answer to the question.
4.
Identify the muscle labeled "B". This muscle lies posterior to the __________.
Correct Answer
D. ID: Geniohyoid: mylohyoid muscle
Explanation
The muscle labeled "B" is the geniohyoid muscle. It lies posterior to the mylohyoid muscle.
5.
What is the action of the geniohyoid muscle?
Correct Answer
A. Protracts the hyoid
Explanation
The geniohyoid muscle is responsible for protracting the hyoid bone. Protraction refers to the movement of bringing a body part forward or in an anterior direction. In this case, the geniohyoid muscle helps to move the hyoid bone forward, which can be important for actions such as swallowing and speaking.
6.
This muscle inserts in the tongue and draws the tip of the tongue backward and the root of the tongue forward:
Correct Answer
B. Genioglossus muscle
Explanation
The genioglossus muscle is responsible for inserting in the tongue and drawing the tip of the tongue backward and the root of the tongue forward. This muscle plays a crucial role in controlling tongue movements, such as protrusion and retraction. By contracting, it helps to shape the tongue and facilitate actions like swallowing, speaking, and chewing.
7.
The muscle that lies lateral to the geniohyoid and retracts and depresses the tongue is the ___________ muscle.
Correct Answer
hyoglossus
Explanation
The muscle that lies lateral to the geniohyoid and retracts and depresses the tongue is the hyoglossus muscle.
8.
The styloglossus:
Correct Answer
C. Inserts in the tongue and retracts and elevates the tongue.
Explanation
The styloglossus muscle is responsible for inserting in the tongue and retracting and elevating the tongue. This means that it helps in pulling the tongue back and also raising it upwards. The other options mentioned in the question, such as drawing the tip of the tongue backward and the root forward or protracting the hyoid, are not the functions of the styloglossus muscle.
9.
Identify the muscle labeled "D".
Correct Answer
D. Sternothyroid
Explanation
The muscle labeled "D" is the Sternothyroid muscle.
10.
Check all of the muscles that help move the tongue.
Correct Answer(s)
B. Genioglossus
D. Styloglossus
Explanation
The correct answer is Genioglossus and Styloglossus. These muscles are both located in the tongue and play a role in its movement. The Genioglossus muscle helps to protrude and retract the tongue, while the Styloglossus muscle helps to elevate and retract the tongue. The other two options, Mylohyoid and Sternohyoid, are not directly involved in tongue movement.