Answer:
The correct term is - extrinsic stain.
Explanation:
Extrinsic stains are normally present on the surface of a tooth and occur due to taking pigmented beverages such as coffee, tea, carbonated drinks, caramel coloring, and foods. Smoking cigarettes is also one of the reasons that can cause an extrinsic stain.
This can be removed by dentists or professionals like hygienists. The stain particles act on the outer surface of the teeth and pigmented them which cause stain yellowish or brownish in individuals.
Thus, the correct answer is - extrinsic stain.
The best category for each medical term are:
- PET scan (for positron emission tomography)- diagnostic tool.
- An electrocardiogram -diagnostic tool.
- Gunther’s disease - disorder.
<h3>What are electrocardiogram?</h3>
An electrocardiogram (ECG) is known to be a kind of a test that can be used to be able to examine a person's heart's rhythm as well as their electrical activity.
Note that it is one that has Sensors attached to the human skin and this is said to be used to know the electrical signals made by the heart each time it said to beats.
A PET scan is known to be a kind of an effective way to help know a lot of conditions such as cancer, heart disease and others.
Therefore, The best category for each medical term are:
- PET scan (for positron emission tomography)- diagnostic tool.
- An electrocardiogram -diagnostic tool.
- Gunther’s disease - disorder.
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Answer:
The answer is: Testosterone
Explanation:
Testosterone is an androgen and primary male sex hormone produced by the gonads. In males, this hormone is responsible for the development of the male reproductive tissues, and promoting the secondary sexual characteristics in males such as growth of body hair, increase in the bone mass and muscle mass.
Answer: D) precapillary sphincters relax.
Explanation:
Blood flow to a tissue will decrease if precapillary sphincters relax as, capillaries provides glucose and oxygen to the cells and allows blood to flow through it when the muscle ring known as the precapillary Sphincters get relaxed. The blood flow is stopped when the precapillary sphincters constrict flow of blood. As, certain chemical signals causes feeder arterioles to dilate and bring more blood into local areas then, it causes precapillary sphincters to relax.
