7/14/2019 WORKSHEET 7.1 the Respiratory Structures and Breathing Mechanisms in Humans and Animals
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Name : _____________________________ Chapter 7 Respiration
__________________________________________________________________________________________
CHAPTER 7 : RESPIRATION
WORKSHEET 7.1 The Respiratory Structures and Breathing Mechanisms inHumans and Animals
1. Label the figure below
a. Gaseous exchange occurs over the whole plasma membrane of an Amoeba sp
the pathway of _________ diffusion
the pathway of __________________ being eliminated
i. The respiratory surface for Amoeba sp. is the entire _____________________
membrane.
ii. It has a _________________ surface area per unit volume of the body, therefore
____________ alone is sufficient to transport gases into and out of the body
b. The tracheal system of an insect
i. The respiratory system of insects is known as the ______________ system,
which is composed of air tubes called ________________.
ii. Air enters the tracheae through ________________ which have _____________.
iii. The trachea is reinforced with rings of ___________________ to prevent it from
_____________________.
iv. The trachea branches into _____________ which provide a large surface area
for the ________ of gases.
_________________________________________________________________________________________WAJA BIOLOGY 2009JPN PERAK
Score __ /__
7.1/1
[ 7 marks ]
[ 12 marks ]
P:
Q:
7/14/2019 WORKSHEET 7.1 the Respiratory Structures and Breathing Mechanisms in Humans and Animals
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Name : _____________________________ Chapter 7 Respiration
__________________________________________________________________________________________
c. The respiratory structure of a frog
i.. Gaseous exchange in frogs occurs through the ____________ and
_____________.
ii. The skin is _________________ and highly ___________ to respiratory gases
with a lot of ______________ under it.
iii. The lungs consist of two air ___________ with thin, ___________ which are
covered by a network of capillaries ______________.
d. The respiratory structure and breathing mechanism of a fish
i. Fish have ______ pairs of gills.
ii Each gill is composed of ________ which have numerous thin –walled ________
that have a rich supply of ____________________.
_________________________________________________________________________________________WAJA BIOLOGY 2009JPN PERAK 7.1/2
[ 10 marks ]
[ 4 marks ]
P:
Q:
7/14/2019 WORKSHEET 7.1 the Respiratory Structures and Breathing Mechanisms in Humans and Animals
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Name : _____________________________ Chapter 7 Respiration
__________________________________________________________________________________________
2. a. Label the figure below :
b. Rearrange the sequence in the correct order using numbers
Inspiration / inhalation Number
Ribs move upwards and outwardsExternal intercostal muscles contract
Diaphragm contracts
Thoracic volume increases
Air moves into the lungs
Diaphragm flattens downwards
Internal intercostal muscles relax
Air pressure inside lungs decreases
c. The graph in Figure below shows the changes in lung air pressure during inhalationand exhalation.
Air pressure in the lungs (mm Hg)
765P Q
760
S
755Time/sec
RCircle the part which represents the time when the rib bone starts moving upwards.
ANSWERS
WORKSHEET 7.1 The Respiratory Structures and Breathing Mechanisms inHumans and Animals
_________________________________________________________________________________________WAJA BIOLOGY 2009JPN PERAK
P
S
R
Q
7.1/3
[ 4 marks ]
[ 1 marks ]
[ 8 marks ]
7/14/2019 WORKSHEET 7.1 the Respiratory Structures and Breathing Mechanisms in Humans and Animals
http://slidepdf.com/reader/full/worksheet-71-the-respiratory-structures-and-breathing-mechanisms-in-humans 4/6
Name : _____________________________ Chapter 7 Respiration
__________________________________________________________________________________________
1. Label the figure below
a. Gaseous exchange occurs over the whole plasma membrane of an Amoeba sp
the pathway of oxygen diffusion
the pathway of carbon dioxide being eliminated
i. The respiratory surface for Amoeba sp. is the entire plasma membrane.ii. It has a large surface area per unit volume of the body, therefore diffusion alone
is sufficient to transport gases into and out of the body
b. The tracheal system of an insect
i. The respiratory system of insects is known as the tracheal system, which iscomposed of air tubes called tracheae.
ii. Air enters the tracheae through spiracles which have valves.iii. The trachea is reinforced with rings of chitin to prevent it from collapsing.iv. The tracheae branches into tracheoles which provide a large surface area for
the diffusion of gases.
c. The respiratory structure of a frog
_________________________________________________________________________________________WAJA BIOLOGY 2009JPN PERAK
P: cytoplasm
Q: nucleus
7.1/4
spiracle
cell
trachea
tracheole
7/14/2019 WORKSHEET 7.1 the Respiratory Structures and Breathing Mechanisms in Humans and Animals
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Name : _____________________________ Chapter 7 Respiration
__________________________________________________________________________________________
i. Gaseous exchange in frogs occurs through the skin and lungs.ii. The skin is thin and highly permeable to respiratory gases with a lot of blood
capillaries under it.iii. The lungs consist of two air sacs with thin, moist membrane which are covered
by a network of capillaries.
d. The respiratory structure and breathing mechanism of fish
i. Fish have four pairs of gills.ii. Each gill is composed of filaments which have numerous thin –walled lamellae
that have a rich supply of blood capillaries.
2. a. Label the figure below
b. Rearrange the sequence in the correct order using numbers
_________________________________________________________________________________________WAJA BIOLOGY 2009JPN PERAK
P trachea
S alveolus
R diaphragm
Q rib
P: lung
Q: nostril
7.1/5
7/14/2019 WORKSHEET 7.1 the Respiratory Structures and Breathing Mechanisms in Humans and Animals
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Name : _____________________________ Chapter 7 Respiration
__________________________________________________________________________________________
Inspiration / inhalation Number
Ribs move upwards and outwards 3
External intercostal muscles contract 1
Diaphragm contracts 4
Thoracic volume increases 6 Air moves into the lungs 8
Diaphragm flattens downwards 5
Internal intercostal muscles relax 2
Air pressure inside lungs decreases 7
c. The graph in Figure below shows the changes in lung air pressure during
inhalation and exhalation.
Air pressure in the lungs (mm Hg)
765P Q
760
S
755Time/sec
RCircle the part which represents the time when the rib bone starts moving upwards?
_________________________________________________________________________________________WAJA BIOLOGY 2009JPN PERAK
7.1/6