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Unit 8: Physiology of Human Body Systems

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well-balanced diet, as well as how to maintain a healthy digestive system to ensure that the human body gets all the nutrients it needs to work properly Also, assess any disease process that alerts the digestive system's biologist functioning, whether triggered by internal or external mechanisms and determine is this could rest in a nutation: deficient The anatomy and physic logs f tie digestive system, the origin, and uses a various essential nutrients and the assonated signs of nutrient deficiency linked to the effects is and remedies for, dietary-related diseases ale ai covered

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Introduction

In this research, I will look at what makes a well-balanced diet, as well as how to maintain a healthy digestive system
to ensure that the human body gets all the nutrients it needs to work properly Also, assess any disease process that
alerts the digestive system's biologist functioning, whether triggered by internal or external mechanisms and
determine is this could rest in a nutation: deficient The anatomy and physic logs f tie digestive system, the origin, and
uses a various essential nutrients and the assonated signs of nutrient deficiency linked to the effects is and remedies
for, dietary-related diseases ale ai covered


The digestive system's operation starts in the brain. The hunger centres of the hypothalamus are triggered when the
body's energy reserves such as blood glucose, protein, or fat stores fall below a defined point. To preserve energy
homeostasis, these centres control satiety and appetite. This tells the brain that it is time to get some food.
However, this is not the only source of hunger stimulation, as food can also provide enjoyment and warmth.



The function of the digestive system is to digest and absorb. Digestion is the breakdown of foods into smaller
molecules which are absorbed in the body.
Chemical digestion occurs through the process of hydrolysis which uses water and digestive enzymes to break down
molecules. Digestive enzymes are used to speed up the hydrolysis process.
Mouth - Secretes saliva from salivary glands, the saliva contains an enzyme called amylase to break down starch
from food into simple sugars. The mouth also chews to break down food into smaller molecules that are easily
digestible. Secreting saliva is chemical digestion and chewing is mechanical digestion.


Oesophagus The oesophagus is an organ that connects the mouth to the stomach and contracts to move food down
to the stomach. The wave like contractions is called peristalsis, it starts in the oesophagus and moves balls of
swallowed food to the stomach.
Stomach
The stomach is an organ that produces hydrochloric acid to kill bacteria. The stomachs' main function is to store
digested food where they are broken down. The type of digestion is chemical digestion as enzymes are being
secreted to break down the foods. For instance, the release of pepsin into the stomach is chemical digestion to break
down proteins. Mechanical digestion also happens in the stomach by peristaltic contractions of smooth muscle. This
further breaks down the food into smaller particles.

Liver - The liver is an organ that secretes bile into the small intestine to emulsify/break down fats into fatty acids.
Pancreas - The pancreas is an organ that secretes pancreatic fluid into the small intestine in order to neutralise the
hydrochloric acid in the intestine. small intestine - The small intestine is an organ that absorbs nutrients of food
through villi into the bloodstream. This type of digestion is chemical digestion as it requires the walls of the small
intestine to make digestive juices/enzymes.
These enzymes include: amylase to break down starch into simple sugars, lipase to break down lipids into fatty acids,
and protease to break down proteins into amino acids.

Large intestine - The large intestine is an organ that is responsible for the reabsorption of water and mineral ions
(sodium and chloride; from the material that is not digested as food and get rid of waste products left.




connects and allows the material to travel to the rectum. The absorption of water in the large intestine occurs through
the process of osmosis, nutrients such as sodium are absorbed by sodium channels.
Rectum - To store the material that has not been digested as food before it is evacuated out of the body.
Anus - The opening at the lower end of the large intestine, it is where the waste is evacuated in the form of faces.
Mechanical and chemical digestion are the two methods used by the body to break down foods. Mechanical digestion
involves physical movements to make food smaller. Chemical digestion involves using enzymes to break down foods.


break down foods. Mechanical digestion involves physical movements to make food smaller. Chemical digestion
involves using enzymes to break down foods. or instance, and example of mechanical digestion is the movement of
the mouth (chewing) to break down food. An example of chemical digestion is the secretion of saliva in the mouth to
break down the starch from foods into simple sugars using amylase.

, effect of dietary disease and corrective treatment(s) on human health.

Dietary problems and their impact on human health

Obesity, high blood pressure, high cholesterol, heart disease, stroke, type 2 diabetes, osteoporosis, and
other issues are among them. Inadequate nourishment makes someone sick or causes headaches and
stomachaches.

One behavior is having poor nutritional intake.



role of digestive enzymes on nutrient uptake in each part of the digestive system.

The food you eat needs to be broken down by digestive enzymes. These proteins hasten the chemical
processes that transform food into compounds that can be absorbed by your digestive system. There
are digesting enzymes in your saliva. These are also expelled by a few of your organs, such as the liver,
gallbladder, and pancreas.



the use of corrective treatment(s) for nutrient deficiency

adjustments to the diet and supplements

eating a diet that is more balanced and healthier. eating foods that have been "fortified" with extra
nutrients. in-between-meal munching drinking beverages with a high calorie content.



role and location of organs involved in digestion

The digestive tract and other organs that aid in the body's digestion and absorption of food make up the
digestive system. It is a lengthy, twisted tube that travels through the stomach, esophagus, small
intestine, large intestine, and anus after beginning at the mouth.



You may get all the energy you need to stay active throughout the day from a well-balanced diet.
nutrients you require for growth and repair, ensuring your strength and health and assisting in the
prevention of diet-related diseases like certain cancers



A diet high in calcium can help prevent bone loss (osteoporosis) brought on by ageing and maintain the
strength of your teeth and bones.
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