Explain the role of platelets in the blood and their lifespan.

Answers

Answer 1
Answer:

Answer:

The average lifespan of a platelet is normally just 5 to 9 days. Platelets are a natural source of growth factors. They circulate in the blood of mammals and are involved in hemostasis, leading to the formation of blood clots. Platelets release thread-like fibers to form these clots.


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The increase in the number of black snails can.best be explained by

Answers

As far as I know about black snails is the fact that the Black Mystery belongs to the genus Pomacea,  Ampullariidae family. This family is also often called Apple Snail, and it contains a nearly 120 different species of snails. I know that increase in the number of black snails can best be explained by the high teperature in which black snails are. It's the main reason of their reproduction.

In the following narrative passage, choose the line that is most likely an aside in a dramatic work.I was walking with Kira in the evening, and that was when she asked me the question I was avoiding. "Hey," she said, "do you want to go to that new superhero movie?" There were crickets and a deafening silence. Oh, how do I tell her I’ve already seen it with the guys without hurting her feelings! "Well, Kira, I’ve heard it’s not as good as the reviews make it out to be." I was relieved to see she bought that reason.

Answers

An aside is a line in a play that is directed to the audience. Although, the convention is that the audience should realize that this character's thought is not heard by the remaining actors on the stage.
In this excerpt, I would say that the aside is - Oh, how do I tell her I’ve already seen it with the guys without hurting her feelings!

Answer:

3rd one

Explanation:

This is a tiny fluid-filled cavity in the cytoplasm. It can be used for storage of biochemicals.

Answers

Answer:

Vacuole.

Explanation:

The cell of the organism is made up of the various cell organelle that together perform the function of living organism. The different cell organelle are mitochondria, vacuole, endoplasmic reticulum and Golgi bodies.

The cytoplasm is the fluid present in living organism. Vacuoles is one of the cell organelle that contains the excess fluid of the organism. Different biochemicals like excess waste, proteins and carbohydrates are stored in the vacuoles. The large vacuoles is present in the plant cell.

Thus, the answer is vacuole.  

Vacuole.

Hope this helps!

-Payshence

Which four body systems interact to allow a person to sneeze? A) Muscular, immune, nervous, respiratory B) Nervous, respiratory, circulatory, skeletal C) Respiratory, endocrine, skeletal, circulatory D) Lymphatic, skeletal, respiratory, muscular

Answers

The four body systems that interact to allow a person to sneeze are the muscular system, immune system, nervous system, respiratory system (Option A).

  • Sneezing can be defined as an involuntary expulsion of air that helps to remove irritant particles from the nose and/or throat.

  • In the first place, the brain (i.e., the nervous system), when the respiratory epithelium (i.e., the respiratory system) is irritated, the endings of the cranial nerve sends a signal message to the brain to induce a sneeze reflex.

  • The muscles involved in sneezing include the chest muscles, abdominal muscles, diaphragm, and muscles that control vocal cords.

  • Sneezing is a fundamental immune response aimed at clearing the respiratory system of harmful pathogenic microorganisms (e.g. bacteria) and viruses.

In conclusion, the body systems that interact to allow a person to sneeze are the muscular system, immune system, nervous system, respiratory system (Option A is correct).

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Answer:

A

Explanation:

Muscular, immune, nervous and respiratory systems are involved in the process of sneezing. Sneezing is the natural defense mechanism of the human body. When any foreign particle enters the respiratory system then it irritates the respiratory epithelium and sends a signal to the brain through the 5th trigeminal nerve and sneezing reflex starts which involved skeleton muscles and respiratory system.

How long is the life expectancy of dolphins

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Depends on the type of dolphin. Striped dolphins can live for 55-60 years, while spotted and bottlenose dolphins can live for 40 years.

Air is filtered, warmed, and moistened in thea. nose and mouth.
c. lungs.
b. throat.
d. pharynx.

Answers

The correct answer is that it is warmed and moistened already in nose and mouth, at the very beginning, when it enters our body (answer a).

It needs to be filtered and warmed alredy before it enters further, because our internal organs are delicate and a dry, dirty air would cause damage to our lungs and other organs.

Final answer:

The air is filtered, warmed, and moistened primarily in the nose and mouth. These parts play a key role in preparing the air for the lungs and maintaining respiratory health. The throat and pharynx, act as pathways to guide the air to the lungs.

Explanation:

The process of warming, filtering, and moistening the air takes place primarily in the nose and mouth (option a). The primary function of our nose is to filter out any impurities (like dust, pollen, etc.), warm, and moisten the air that we inhale. The mouth also plays a similar role to some degree. However, the actual process of gas exchange happens in the lungs. The throat and pharynx, on the other hand, mainly serve as conduits to direct air from the nose and mouth into the lungs.

Learn more about Respiratory System here:

brainly.com/question/18289690

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