Download Exercises - Nozha Language Schools

Exercises
1- Complete the following sentences :
1-
Diaphragm Muscle helps the mechanism of respiration.
2-
Exchange of gases occurs in alveoli between air and blood
3-
Air enters into lungs during the process of inhalation and leaves there
during process of exhalation
4-
Man needs the process of respiration to get energy needed to do all body
functions.
5-
The exchange of gas takes place inside the human body through the
respiratory System.
6-
Respiratory is the system that provides the human body with oxygen gas
and takes away Co2 gas and water vapour.
7-
The diaphragm Separates between the chest cavity and abdominal cavity.
8-
When the diaphragm muscle contracts and it moves down wards and the
thoracic cavity enlarges
9-
The volume of the thoracic cavity increase in the inhalation Process and
decrease in the exhalation Process.
10- Oxygen gas enters during inhalation process, while carbon dioxide gas
moves outside the lungs during exhalation process.
11- Each lung contains of alveoli that have thin walls and they are surrounded
with blood capillaries Where gas exchange Takes place.
12- Blood capillaries are found in the nose and warm up the inhalation air.
13- The nose contains hair to filter the inhaled air.
14- The epiglottis closes the larynx during swallowing
15- Trachea has cilia to sweep out the dirt and cartilaginous rings to be
opened all of the time.
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2- Choose the correct answer :
1- Air enters the lungs in the process of …………..
(inhalation – exhalation – excretion – digestion)
2- Air leaves the lungs during the ……………
(exhalation – inhalation – digestion – absorption)
3- The common path of food and air is the ……………
(nose – pharynx – diaphragm – larynx )
4- The …………. Is located inside the lungs, where gas exchange takes place.
(Alveoli – Bronchioles – trachea – nose)
5- The epiglottis ……………………
(keeps air out of the trachea – keeps food out of the trachea
– (Is the sound producing organ – makes enzymes)
6- The organ that is responsible for preventing food from entering the
respiratory system is the ………………
(trachea – alveoli – two bronchi – epiglottis)
7- The responsible organ for producing the human voice is the ………….
(trachea – nose – mouth – larynx)
8- The muscle that help in breathing is the …………….
(pharynx – larynx – diaphragm – rib cage)
9- Gas exchange during the process of respiration occurs in the …………….
(trachea – nose – mouth – alveoli)
10-
The ………… is the organ of the human respiratory system.
(heart – stomach – lungs – liver)
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3- W.S.T.
1- The organ that contains hairs to filter the air from the dust.
(Nose)
2- The voice organ in the human body.
(Larynx)
3- The organ that prevent food from entering the trachea.
(Epiglottis)
4- An elastic membrane that separate between the chest cavity and abdominal
cavity.
(Diaphragm)
5- A gas which turns line water milky.
(Carbon dioxide)
6- An organ where gas exchange takes place.
(Lungs)
4- Put (√ ) or (x)
1- Air enters lungs during inhalation process.
(√ )
2- When diaphragm contracts it moves upwards.
(x)
3- The increase and decrease of the thoracic cavity during
(√ )
respiration is called mechanism of respiration
4- When the body’s activities increase it needs more oxygen, so it
(√ )
needs more respiration
5- Alveoli have thick walls and surrounded by blood capillaries
5- G.R.F.
1- You should breathe by the nose not the mouth.
Because nose contains:
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(x)
- Hair: to filter the air from entering the lungs
- Mucus: to moisten the air before entering the lungs
- Blood capillaries: worm up the air
2- Food does not enter the trachea during swallowing.
Because epiglottis close the larynx during the swallowing
3- Presence of cilia and cartilaginous rings in the trachea.
To sweep out any foreign body enter the trachea
4- The walls of the alveoli and blood capillaries are thin.
To allow the exchange of gases between the air and the blood
6- What happens in each of the following cases
1- Removing the epiglottis from the human body.
The food will enter the trachea and lungs
2- There is no any mucus or hair in the nose.
The air will be not moistened or filtered before entering the lungs.
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