Facial Electrics Quiz 1

Explanation
The proper name for the collar bone is clavicle.

Explanation
The nasal bones form the bridge of the nose and also contribute to the formation of the roof of the mouth, as well as the floors and walls of the mouth. They are located in the upper part of the face and are responsible for providing structural support and protection to these areas.

Explanation
The frontalis muscle is responsible for moving the scalp forward and raising the eyebrows. This muscle is located on the forehead and helps in various facial expressions, such as surprise or concern. When the frontalis muscle contracts, it pulls the scalp forward, resulting in the raising of the eyebrows. The other muscles listed, deltoid, platysma, and zygomaticus, are not involved in these specific movements.

Explanation
The mandible is the correct answer because it is the bone that forms the jaw. It is the largest and strongest bone in the face and is responsible for supporting the lower teeth and providing structure to the lower part of the face. The mandible is a movable bone and is connected to the skull by the temporomandibular joint, allowing for actions such as chewing and speaking.

Explanation
An EMS unit, also known as an electrical muscle stimulation unit, is designed to stimulate the motor point in order to cause a contraction in the muscles. This is achieved by delivering electrical impulses to the muscles, which mimic the signals that the brain sends to the muscles during voluntary contractions. By stimulating the motor point, the EMS unit can activate the muscles and promote muscle strength, endurance, and recovery. Therefore, the statement "An EMS unit works by stimulating the motor point to cause a contraction" is true.

Explanation
Caucasian skin is more prone to UV damage and ephilides (freckles) compared to other skin types. This is because Caucasian skin typically has less melanin, which provides natural protection against UV radiation. As a result, exposure to the sun's harmful rays can cause more damage to the skin, leading to sunburn, premature aging, and an increased risk of skin cancer. Ephilides, or freckles, are also more common in Caucasian individuals due to their lighter skin tone and increased sensitivity to sunlight.

Explanation
As the skin ages, the production of collagen and elastin fibers slows down. Collagen and elastin are proteins that provide structure and elasticity to the skin. When their production decreases, the skin becomes less firm and loses its ability to bounce back, leading to wrinkles, sagging, and a generally aged appearance. Therefore, the statement that the production of collagen and elastin fibers slows down as the skin ages is true.

Explanation
Thrombosis refers to the formation of a blood clot within a blood vessel, obstructing the normal flow of blood. It is a condition where a clot forms and remains in a specific location, potentially leading to serious complications if it blocks blood flow to vital organs such as the heart or brain. Therefore, the correct answer is "Blood clot."

Explanation
The insertion of a muscle refers to the end of the muscle that attaches to the bone it moves. This is the point where the muscle connects to the bone and allows for movement when the muscle contracts.