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Cerrena [4.2K]
3 years ago
5

Which action is the main function of the digestive system?

Biology
2 answers:
vredina [299]3 years ago
8 0

Answer;

Ingestion of food.

Secretion of fluids and digestive enzymes.

Mixing and movement of food and wastes through the body.

Digestion of food into smaller pieces.

Absorption of nutrients.

Excretion of wastes.

Explanation;

The digestive tract (alimentary canal) is a continuous tube with two openings: the mouth and the anus. It includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine.

The treatment of food in the digestive system involves; ingestion, propulsion, secretion, mechanical digestion, chemical digestion, absorption and defecation.

The function of the digestive system is digestion and absorption. Digestion is the breakdown of food into small molecules, which are then absorbed into the body.

Fiesta28 [93]3 years ago
4 0

The answer is : ingestion and digestion ; propulsion and secretion ; absorption and elimination

Digestive system will receive and digest food to make the molecule smaller. After the molecule become small, it could be absorbed by the body. The waste that couldn't be digested and absorbed will be eliminated as feces. Some of the waste from the body like bilirubin would be dumped through feces too.

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How the wildebeest are keystone species and the connection between fires , tree .?
nadezda [96]

Answer:Wildebeest are considered keystone species because their presence has myriad effects on the ecosystem, unlike those of any other species. Wildebeest are the "lawnmowers" of the Serengeti grassland. They keep grass short which in turn reduces the frequency of fires.

7 0
3 years ago
Match each organ or function with its body system
agasfer [191]

Answer:

many system and many functions of body systems.

Like- nose ,and functions is they were smell in any things.

second - ear, functions is they were any sound to feel together.

third-tongue , functions is they were any taste feel in what can I do in salt and bitter.

AND MANY OTHER FUNCTIONS TOGETHER.

I HOPE LIKE THIS ANSWER

3 0
3 years ago
Which statement describes an element? Check all that apply
Ivahew [28]

Answer:

is substance that cannot be broken down into a simpler form

Explanation:

5 0
3 years ago
You have lost the sensation, but not movement, in one of your hands due to a problem with your spinal cord neurons. Based upon t
Usimov [2.4K]

Answer:

A sensory neuron.

Explanation:

The nervous system can be divided in two systems: the central nervous system and the peripheral nervous system. The central nervous system (CNS) is composed by the brain and the spinal cord. The peripheral nervous system (PNS) consists of the nerves and ganglia. Neurons are specialized cells that form the basic functional unit of the nervous system. There are three types of neurons: sensory, motor and interneurons. The sensory neurons are in charge of bringing signals into the CNS, and the motor neurons are in charge of carrying signals out of the CNS. The interneurons act as intermediaries, passing information between two neurons.  

As the name implies, sensory neurons are activated by the senses, for example: sound, visible light, physical contact (heat and cold), chemical signals (smell and taste). The loss of sensation in one hand would be the result of a damaged sensory neuron.  

7 0
3 years ago
In a paragraph, explain why humans have so little drinking water available for their use. Be sure to tell at least two details t
kvv77 [185]

Answer:

The easiest answer to that is that most of the water on Earth isn’t just water.

Explanation: Most of the water on Earth contains high levels of salt, and that’s a major cause for why so much of that water is not fit for human consumption. That much salt is toxic to humans because it overloads the kidneys’ ability to remove salt. Freshwater works in part by diluting and absorbing the salt in your body so it can be flushed out of your system, but salt water is so saturated in salt this just isn’t possible. Even worse, the salt in the salt water actually adds to the salt in your body, so when you are dehydrated, one of the worst thing you can do is drink salt water.

About 97% of the water on Earth is salt water. Of the remaining 3%, some of that will be unfit for human consumption because it was used in industrial processes or sanitation, and some of it will be unfit for human consumption because the water is home to parasites (and in some cases, the water is both).

As a sidenote, when I said that the remaining 3% of the water was not salt water, I didn’t say that it was available freshwater (tainted or otherwise). Most of the freshwater in the world is ground water, literally water that is found in the ground itself.

Hope that helped you <3 ;)

8 0
2 years ago
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