Free Printable Gas Exchange System(1)

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Gas Exchange System(1)

Total questions: 15

Worksheet time: 7mins

Name

Class

Date

Which of the following is the correct list of structures are found in the trachea

cartilage, ciliated epithelium, goblet cells, pulmonary capillaries

cartilage, bronchial epithelium, smooth muscles, branch of pulmonary artery

cartilage, ciliated epithelium, goblet cells, smooth muscles

cartilage, squamous epithelium, elastin, goblet cells

what tissues are present in a bronchus?

cartilage, ciliated epithelium and smooth muscles

cartilage and ciliated epithelium

cartilage and smooth muscles

ciliated epithelium and smooth muscles

Which of the following is true about the approximate diameters of the different parts of the human gas exchange system

trachea (18mm), bronchus (12mm), bronchole (0.5mm), alveolus (0.25mm)

trachea (18mm), bronchus (1.2mm), bronchole (0.5mm), alveolus (0.25mm)

trachea(18mm), bronchus (12mm), bronchiole (0.5Um), alveolus (0.25Um)

trachea(1.8cm), bronchus (1.2cm), bronchiole (0.5cm), alveolus (0.25mm)

Which of the following BEST explains why gas exchange cannot occur across the trachea walls

absence of surfactant

lack of elastic fibre

presence of cartilage

absence of pulmonary capilaries

What would be seen in the photomicrograph of the wall of the trachea?

elastic fibres, epidermis, smooth muscle

elastic fibres and epidermis

elastic fiber and smooth muscles

epidermis and goblet cells

What would be seen in an electron micrograph of a bronchus wall

cartilage cells and cilated cells

cartilage cells and exocytotic vessicles

ciliated cells and exocytotic vesicles

cartilage cells, ciliated cells, and exocytotic vesicles

How does smoking increase the risk of developing artherosclerosis?

by damaging artery walls

by decreasing blood pressure

by increasing the risk of blood clotting

by reducing the oxygen supply to cardiac muscles

What is the function of the tissue labelled X

contracts to constrict the airway

helps to widen the airway after an allergic reaction

produces mucus to trap dust particles and bacteria

supports the airway to prevent collapse

The inner lining of the bronciole is folded. Why?

to allow for expansion during breathing

to facilitate gaseous exchange

to increase the surface area for gas exchange

to trap foreign particles

10.

Which of the following statements are not true about the functions of different parts of the gas exchange system?

Cartilage supports the trachea

cilated epithelial cells move mucus over the surface of the trachea

goblet cells produce enzymes to destroy bacteria

smooth muscles causes constriction of some bronchioles

11.

What correctly describes the role of elastic fibres in the lungs?

They allow the walls of the stretched alveoli to recoil as aire is breathed out

They increase the walls of the alveoli as a result of the release of the enzyme elastase

The increase in the walls of the alveoli as emphysema develops

They prevent the walls of the alveoli from colapsing as air is breathed in

12.

Which organelles will be present in Goblet cells in large amounts?

Golgi body, mitochondria and ribosomes

Golgi bodi and mitochondria but not ribosomes

Golgi body and ribosomes but not mitochondria

mitochondria and ribosomes but not Golgi body

13.

Which characteristic of the human gaseous exchange surface and the lungs, maintains the necessary concentration gradients for carbon dioxide and oxygen?

good ventilation of the lungs

large surface area of the alveolar

low resistance to air flow

the walls of the alveoli are thin

14.

Which characteristic of the human gaseous exchange surface and the lungs, maintains the necessary exchange of large amount of gases between the lungs and the blood?

good ventilation of the lungs

large surface area of alveoli

low resistance to the flow of air

thin alveolar walls

15.

Which characteristic of the human gaseous exchange surface and the lungs, maintains the necessary speedy exchange of gases between the lungs and the blood?

good ventilation of the lungs

thin alveolar walls

large surface area of alveoli

free flow of air

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Gas Exchange System(1)

Total questions: 15

Worksheet time: 7mins

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