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Worksheets8.2 Mechanisms of Breathing in Humans & Animals
Total questions: 16
Worksheet time: 9mins
Name the structures that aid the breathing mechanism of fish.
mouth
tail
gills
mouth movement and operculum
gaseous exchange between blood and water in fish occurs through
diffusion
active transport
what causes the water to flow through the operculum opening of the fish during exhalation?
lower pressure in the buccal cavity
low pressure in the opercular cavity
higher pressure in the buccal cavity
Which animal has the same breathing organ as the animal in the picture?
Figure shows the head of a grasshopper being immersed in the water. However, the grasshopper was still alive. Why does the grasshopper still alive?
It breathes through gills
Air is absorbed through its skin
Its respiratory organ is located in the abdomen
It has two respiratory organs which are lungs and skin
What helps to draw air into insect tracheae?
closing of glottis
abdominal pumping (due to muscle contraction)
contraction of intercostal muscle
closing of spiracle
Why is oxygen transported into insect muscle cells faster when they are active?
There is less fluid in the tracheoles and diffusion is faster in air
Lactic acid is secreted into tracheoles
There is more fluid in the tracheoles and diffusion is faster in water
Oxygen can be transported into cells by osmosis
Name the respiratory structure in frog.
Trachea
Gills
Moist outer skin
Lungs
What happens when the floor of the buccopharyngeal cavity (the mouth) of a frog is raised?
tekanan udara berkurang
air pressure decreases
tekanan udara meningkat
air pressure increases
lubang hidung buka
nostrils open
glotis tertutup
glotis closes
Which of the following shows what happens to the chest cavity when air rushes into the lungs?
decrease in volume
deflates
expands
relaxes
Which of the following happens when you exhale?
chest cavity expands
your lumgs become smaller
your chest cavity becomes smaller
your lungs take in and give off oxygen
What material in a lung model represents the diaphragm
Y plastic tubes
the plastic jar
the plastic sheet
2 small plastic bags
Boyle's law says that the volume and pressure of a gase are inversely proportional, what does this mean?
if volume increases, then pressure increases
if volume increases, then pressure decreases
if volume increases, then pressure stays the same
Which of the following is true for inhalation?
internal intercostal muscles contract
external intercostal muscles contract
rib cage moves downwards and inwards
rib cage move downwards and outwards
A
B
C
D
A
B
C
D
