Chapter 1 Health And Lifestyle Flashcards
(35 cards)
Nutrients
Carbohydrates Protein Fats Vitamins Minerals Water
Carbohydrates
Nutrients that are found in foods
They give us energy
Proteins
They will make our bodies grow and repair body tissues (e.g. muscles)
Fats
Nutrients found in foods
They give us instant energy insulation
Vitamins
They will keep our skin, teeth and bones healthy
Obese
Slightly big and overweight
Starvation
Not feeding the body enough nutrients
Energy
the strength and vitality required for sustained physical or mental activity.
Mouth
It is used for many things but for food the mouth is like a gateway to your body once the food is swallowed it will travel down to the oesophagus
Oesophagus
A tube that carries food from the mouth to the stomach by muscular contractions called ‘peristalsis’
Stomach
A muscular sac. Food is mixed with stomach acid (hydrochloric acid) and digestive enzymes and churned (mixed up).
Liver
A large organ that produces a green liquid called bile that neutralises stomach acid and helps break down fats into tiny droplets
Pancreas
A gland (leaf shaped) below the stomach that produces digestives enzymes that help break down foods
Small intestines
Long thin tube that food moves through after the stomach. Digested food is absorbed from the small intestine into bloodstream. More enzymes are produced there to break down food further. the blood then transports the nutrients to all body cells.
Large intestines
Water is reabsorbed back into the bloodstream. Passes undigested food into the rectum
Enzymes
They are produced from the organ (pancreas) to break fats and food into smaller parts.
Drug
A drug is a chemical that changes the way your body or brain works. Drugs may alter your behaviour as well as your metabolism
Alcohol
Is a depressant and counted as units and people shouldn’t go over 14 units in a week otherwise it is called binge drinking.
Stimulant drug
Stimulants speeds up the activity of the nervous systems (e.g.) increases feelings of well-being, and increase energy and alertness.
Depressant drug
They can slow down the activity of brain and nervous system causing sleepiness and forgetfulness.
But can be relaxing for a short amount of time and may be addictive.
Drug addiction
Your body is dependent on that specific drug (meaning that you have to keep taking it otherwise your body will go crazy). But very difficult to stop taking it.
Pain-killers
Pain-killers block nerve impulses meaning they reduce the pain that the person is feeling and reasons it is addictive.
Performance enhancers
It is used for to enhance muscle growth (‘anabolic’ effects’) or to reduce fat (catabolic effects). Steroids occur naturally or can be produced synthetically.
Hallucinogen
They have powerful mind-altering effects and cause people to see and hear things that are not there (hallucinate).