carbohydrates, protein, vitamins, fibre, fats, minerals and water
2 of 21
explain how the digestive system works
chewed in mouth, saliva is added to swallow.
oesophagus, muscles contract moving the food down.
stomach, churned with strong acid.
large intestine, water is removed.
small intestine, molecules absorbed through wall.
rectum, faeces stored and eventuall
3 of 21
what three things work together during movement
muscles, bones and joints
4 of 21
what are the four roles of the skeleton
support, movement, protection and to make red blood cells
5 of 21
what are antagonistic muscle pairs
muscles that work against each other
6 of 21
when are joints formed
when two or more bones meet
7 of 21
that do ligaments do
join bone to bone
8 of 21
what do tendons do
join muscle to bone
9 of 21
what is the fluid that lubricates the joint called
synovial fluid
10 of 21
what does cartilage do
protects bone from abrasion
11 of 21
what is an element
an element is made up of only one type of atom
12 of 21
what is a compound
two or more elements chemically joined
13 of 21
name the properties of a metal
conduct electricity, high melting point, dense, malleable, ductile, sonorous, shiny, conducts heat and iron, cobalt and nickel are magnetic
14 of 21
name the properties of a non metal
low melting point, brittle, dull, poor conductors of heat and poor conductors of electricity
15 of 21
what is the name of the ore iron comes from
haematite
16 of 21
what is the name of the ore aluminium comes from
bauxite
17 of 21
what is an ore
most metals are naturally found in rocks called ores where they are chemically bonded to other elements
18 of 21
why would iron sulphate and copper not react
because iron is more reactive and in a compound form, it cant displace the less reactive metal from its compound
19 of 21
what is the diaphragm
thin sheet of muscle under the ribs
20 of 21
what does the alveoli do
the alveoli absorb oxygen into your body. they are on the end of bronchi tubes.
21 of 21
Other cards in this set
Card 2
Front
name the seven food groups
Back
carbohydrates, protein, vitamins, fibre, fats, minerals and water
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