Respiratory System- Structure

Question 1

1 Identify all the parts of the Respiratory System?

Answer 1

Nasal cavity
Mouth
Larynx
Lungs
Right bronchi
Diaphragm
Pharynx
Trachea
Left bronchi
Bronchioles
Alveoli

Question 2

2 What is the role of the nasal cavity?

Answer 2

Breath air in and out. Hairs filter out dust

Question 3

3 What is the voice box also, known as?

Answer 3

Larynx

Question 4

4 Write 3 facts abouts the trachea?

Answer 4

Known as the windpipe. 12 cm long. Rigid rings of cartilage to prevent collapse.

Question 5

5 What does the epiglottis do?

Answer 5

Small flap of cartilage, closes over the top of the trachea when you swallow food; prevents food travelling to your lungs

Question 6

6 What can you find in the thoracic cavity?

Answer 6

Lungs

Question 7

7 The trachea splits into two smaller tubes. What are they called?

Answer 7

Bronchi

Question 8

8 Which tubes connect the bronchi and alveoli?

Answer 8

bronchioles

Question 9

9 The alveoli are the site of?

Answer 9

Gaseous exchange

Question 10

10 State 6 charactoristics of the alveoli?

Answer 10

One cell thick.
-Short diffusion pathway.
-Semi-permeable membrane.
-Good blood supply.
-Small in size, large in amount.
-Big surface area

Question 11

11 What happens to the diaphram when you breathe in and out?

Answer 11

Inspire: Contracts and pulls flat.
Expire: Relaxes and rises into a dome shape

Question 12

12 What is the role of the internal intercostal muscles and external intercostal muscles?

Answer 12

The internal intercostals: Lie inside the ribcage. They draw the ribs downwards and inwards
The external intercostals: Muscles lie outside the rib cage. They pull the ribs upwards and outwards