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zysi [14]
3 years ago
9

Which of the following statements about the thyroid gland is true? A. It is located anterior to the trachea and inferior to the

larynx. B. The parathyroid glands are embedded within it. C. It manufactures three hormones. D. It is controlled by the anterior part of the pituitary gland. E. All of the above are true.
Biology
1 answer:
vichka [17]3 years ago
6 0

Answer: Option E. All the statements are correct.

Explanation:

Thyroid gland is an endocrine gland that is found in front of the neck, it consists of two lobes connected by isthimus. It is in front of the neck lying against and around the front of larynx and trachea. Thyroid gland secretes three hormones which are thyroxine, triiodothyronine and calcitonin. Thyroxine and trio doth tribune are thyroid hormone. The parathyroid glands are tiny structures found in the thyroid gland. A thick connective tissue separates the parathyroid glands from thyroid tissues. The thyroid gland is controlled by thyroid stimulating hormone called thyrotropin which is released from the anterior pituitary gland which triggers the release of thyroid hormones.

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True or False? (circle one)<br> Skin, hair, and nails are all made of keratin.
elena-14-01-66 [18.8K]

It contains connective tissue, nerve endings, and hair follicles. Subcutaneous tissue is the third layer of the skin. Located beneath the dermis and epidermis, it is mostly fat. These skin cells produce the protein keratin, the basic structural component of hair and nails.

So I would say True.

Hope This Helps!              Have A Nice Day!!

4 0
3 years ago
Read 2 more answers
Classify each example or description into the correct evolutionary mechanism.
svetlana [45]

Among evolutionary mechanisms, there can be mentioned non-random matings (1 and 8) , mutations (3 and 6), genetic drift (2, 4 and 5), and genetic flow (7).

<h3>What are evolutionary mechanisms?</h3>

These are different mechanisms that change allelic frequencies and genotypic frequencies conserning the expected ones if populations were under Hardy-Weinber equilibrium.

When these mechanisms are going on, populations evolve.

Among them, we can mention,

  • Non-random matings  
  • Mutation
  • Genetic drift
  • Genetic flow

In the attached files you will find a better explanation about evolutionary mechanisms

Examples classification,

1)  non-random matings

2)  Genetic drift - founder effect

3)  Mutation

4) Genetic drift - founder effect

5)  Genetic drift - bottleneck effect

6)  mutation

7)  Genetic flow

8)  Non-random mating

You can learn more about evolutionary mechanisms at

brainly.com/question/937974

brainly.com/question/10471625

brainly.com/question/73154

Download pdf
4 0
2 years ago
Describe ways in which a healthy artery differs from an artery affected by coronary heart disease
JulsSmile [24]

Answer:

A healthy artery is wider and has no blockages. The lumen (which is the hole in the centre of the artery), is open and clear. This means there is more blood flow. An artery of a person suffering from coronary heart disease is often blocked, usually by a fatty deposit. This means the blood does not flow as well. (See diagram, in which I would draw two arteries, one with a blockage of fatty deposit, one clear and healthy).

hope this helped you

please mark as the brainliest (ㆁωㆁ)

3 0
4 years ago
Loneliness is best described as a state created by the awareness that you:______ a) are alone most of the time. b) have lost a s
velikii [3]

Answer:

C IS SURELY THE ANSWER

c) have fewer numerous or meaningful social relationships than you desire

Explanation:

Loneliness is a negative feeling that results when one's social needs are not met by the amount and quality of his/her available social relationships

7 0
3 years ago
In 1956, people in Minamata, Japan, began to exhibit severe neurological disorders and birth defects
nydimaria [60]

Answer: B) Tuna that feed on smaller fish that feed on krill that feed on algae

Explanation:

Methyl Mercury is a persistent substance which is not easily biodegradable, when released to the water body it is ingested, and can build up in living organisms, or bioaccumulate.

This build up in living organisms, inflicts a spiraling levels of harm as the food chain ascends, for example on higher order species such as predatory fish and fish eating birds and mammals — through a process know as "biomagnification".

The most affected is the species highest in the order. The tuna fish eats smaller fishes and is therefore most affected through biomagnification of mercury bioaccumulated food it ate.

Thus the Tuna fish have the highest levels of methylmercury, and therefore feels the severest effect.

4 0
3 years ago
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