Name:__________________ Date:________________ Subject: Science Strand: Biology Grade :VII
Chapter # 1 The Respiratory System
Review Sheet
Fill this table to summarise the structure & functions of different components of respiratory
system.
Function (notes)
Structure
Tiny hair-like projections from a cell that usually allow it to move a
substance past the cell (for example, in the bronchioles in the lungs).
Sets of muscles between the ribs which raise and lower the rib
cage.
A large sheet of muscle that separates the lungs from the
abdominal cavity
Tiny air sacs in the lungs, where gas is exchanged during breathing.
Bronchi
Bronchioles
Epithelial cells
Thin, moist membranes surrounding the lungs that make an airtight
seal.
The ribs and upper backbone, and the organs found in the chest.
Epithelial cells
The major airway in the respiratory system, also known as the
windpipe, connecting the pharynx and larynx to the lungs.
Aerobic Respiration
Anaerobic Respiration
Pharynx (Throat)
Fill in the blanks.
• All organisms respire all the times. Respiration releases ___________ from food.
•
In humans a lot of this energy is released as ___________.
•
The food substance used in respiration is called ___________.
First Steps 2023-2024
•
The other reactant in respiration is the gas ___________.
•
The chemical products of respiration are carbon dioxide and _____________.
•
Ventilation is the movement of air in and out of the ____________.
•
The evidence that you produce carbon dioxide can be shown by breathing out
into ___________ as it turns from clear to milky.
•
The air we breathe out contains more ____________ and less ___________ than the air we
breathe in. It is also warmer and cleaner.
Label the following diagram.
First Steps 2023-2024
Testing presences of CO2 in exhaled gas:
How can you test the presence of CO2 in your exhaled breath? Summarize Lime water test
in your own words.
First Steps 2023-2024