Exercise 3 -
Nutrition, The Digestive System and The Heart
Nutrition
Nutrition is the
process of consuming, absorbing, and using nutrients needed by the body for
growth, development, and the maintenance of life; nutrients are chemical
substances in foods that nourish the body.
There are a number of key food groups we need to intake as humans. Below we have
listed some characteristics - can you name the correct food group that relates
to each characteristic?
2) They are made from fatty acids and glycerol.
3) It helps us cool down when our body temperature rises.
4) They are made up of amino acids.
5) They are the main source of energy?
6) They are used to store energy and for warmth (insulation).
7) Chemical reactions in the human body take place in this.
8) It is not actually digested but it helps food move through your
system.
9) We need this mineral to make haemoglobin.
10) We need this mineral for healthy bones and teeth.
11) This vitamin hardens your bones.
12) This vitamin prevents scurvy.
13) These help repair and replace damaged cells.
14) This vitamin helps build immunity against illnesses and aids good
eyesight.
15) This vitamin improves the flow of blood and aids the skin.
Digestion and The Digestive System
Digestion is the
process of breaking down large, insoluble molecules into small, soluble
molecules so that they can be absorbed into the bloodstream.
Can you name all the parts of the digestive system on the sketch below?
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
The Digestive System Do you know which part of the digestive system is
responsible for which functions?
2)
Where in the digestive system is food absorbed into the bloodstream?
3)
Which part of the digestive system has muscular walls, which churns
the food?
4)
Mucus lubricates the food as it passes through which part of the
digestive system?
5)
Where does food that has not been absorbed into the blood, collect?
6)
Before they are expelled from the body, where do waste products
collect?
7)
Waste products leave the body through the…..?
8)
Gastric juices are produced in which part of the digestive system?
The Heart
Can you name all the different parts of the heart? See attached sketch and answers
Questions
Can you fill in the missing words?
2) carry
oxygenated blood.
3)
The artery
is the only artery to carry deoxygenated blood.
4)
The side of
the heart receives oxygenated blood.
5)
The side of
the heart receives deoxygenated blood.
6)
The is the
main artery to the body.
7)
The pulmonary artery carries deoxygenated blood to the
8) carry
deoxygenated blood.
9)
The vein is
the only vein to carry oxygenated blood.
10) prevent
the backflow of blood in the heart and veins.
