Environmental Sciences, asked by Zufi0102, 6 months ago

1. Explain what is meant by digestion and how is it important for us?

2. How does saliva help in digestion? Why is it important to chew food well?

3.What is the role of small intestines in digestion?

4. What happened to leftover food at the end of the large intestine?

5.What are the functions of brain, lungs, heart and kidneys in the body? Are they same?

Answers

Answered by deepakshrivastava086
1

Answer:

1. Digestion is important because your body needs nutrients from food and drink to work properly and stay healthy. Proteins, fats, carbohydrates, vitamins link, minerals link, and water are nutrients.

2. Helps in breakdown of fats:

The saliva has certain enzymes that can help break down the food. For instance, lingual lipase is one of the enzymes produced by the salivary glands under the tongue, which helps break down fats. Longer exposure to saliva while chewing food means longer exposure to this enzyme.

3. Functionally, the small intestine is chiefly involved in the digestion and absorption of nutrients. It receives pancreatic secretions and bile through the hepatopancreatic duct which aid with its functions.

4. By the time food reaches the large intestine, the work of absorbing nutrients is nearly finished. The large intestine's main job is to remove water from the undigested matter and form solid waste (poop) to be excreted.

5. Functions of brain- The brain controls our thoughts, memory and speech, movement of the arms and legs, and the function of many organs within our body. The central nervous system (CNS) is composed of the brain and spinal cord.

Functions of lungs- Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe. The respiratory system's main job is to move fresh air into your body while removing waste gases.

Functions of heart- Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. Your heart is a muscle, and its job is to pump blood throughout your circulatory system

Functions of kidney- Their main job is to cleanse the blood of toxins and transform the waste into urine. Each kidney weighs about 160 grams and gets rid of between one and one-and-a-half litres of urine per day. The two kidneys together filter 200 litres of fluid every 24 hours.

No, all the body parts have their different functions

Explanation:

May my answer helps you ☺️

Answered by 12784
1

Answer:

1. Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.

2. The physical process of chewing food in your mouth helps to break down larger particles of food into smaller particles. This helps to reduce stress on the oesophagus and helps the stomach metabolize and breakdown your food. Saliva also contains digestive enzymes, which are released when chewing and assist in digestion.

3. The small intestine carries out most of the digestive process, absorbing almost all of the nutrients you get from foods into your bloodstream. The walls of the small intestine make digestive juices, or enzymes, that work together with enzymes from the liver and pancreas to do this.

4. By the time food reaches the large intestine, the work of absorbing nutrients is nearly finished. The large intestine's main job is to remove water from the undigested matter and form solid waste (poop) to be excreted.

5.The brain is an important organ that controls thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger, and every process that regulates our body.

Heart – Your heart is between the two lungs at the front of your chest. The heart muscles continually circulate blood around your body. You know your heart is working because you can feel your heart beat and you can feel the blood at your pulse.

The heart pumps blood containing new oxygen to every part of your body. At the same time, it pumps the old blood without oxygen back through the lungs where is picks up new oxygen to repeat this cycle.

Lungs – your lungs are sponge-like organs. Every time you breathe they filter oxygen from the air through tiny vessels into the blood. It is then carried to the heart to be pumped round your body. The lungs filter carbon dioxide from your body when you breathe out.

Liver – your liver is the organ below the lungs that acts like a filter for the blood. Chemicals and impurities, including from drugs and medications, are filtered by the liver. The liver have many other essential functions. For example, the liver makes and processes many body fats. The liver is the only internal organ that can regrow.

Kidneys – the kidneys are also filters. Some drugs are filtered more by the kidneys than by the liver. Waste products filtered by the kidneys leave the body as urine.

The kidneys are in your lower back. Any blockage to your kidneys is extremely painful and can cause permanent damage. Although you are born with two kidneys, many people live very well with just one.

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