Respiratory System

Question 1

What’s the pharynx

Answer 1

A tube that leads from back of nose and mouth to oesophagus posteriorly and larynx anteriorly

Question 2

Pharynx length

Answer 2

12.5cm

Question 3

At the back of the pharynx that connects to the nose are

Answer 3

Lymphoid tissue which forms the pharyngeal tonsils

Question 4

Pharynx function

Answer 4

Air passage

Warm and moisten air

Question 5

Larynx is

Answer 5

Voice box

Question 6

Larynx structure

Answer 6

Rings of cartilage

Question 7

Thyroid cartilage is

Answer 7

Top of larynx

Question 8

Trachea is

Answer 8

Continuation of larynx

Question 9

Trachea length

Answer 9

10cm

Question 10

Trachea leads to

Answer 10

Bronchi of lungs

Question 11

Trachea structure

Answer 11

Hyaline cartilage rings
Involuntary muscle
Connective tissue

Question 12

Trachea is lined with

Answer 12

Epithelium

Question 13

During expiration the external intercostals

Answer 13

Relax

Question 14

When external intercostals relax the ribs fall down and in and size of chest

Answer 14

Decreases

Question 15

What are respiratory nerves called

Answer 15

Chemoreceptors

Question 16

Where are the chemoreceptors

Answer 16

Aorta and carotid artery

Question 17

What do the chemo receptors do

Answer 17

Send impulses to respiratory centre in medulla oblongata of brain

Question 18

What triggers the nerve

Answer 18

When co2 or oxygen is too high or low

Question 19

What parts of the brain control breathing

Answer 19

Medulla oblongata

Pons

Question 20

What’s the process of inhaling

Answer 20

Nerve detects low oxygen 
Diaphragm contracts 
Air sucked into lungs 
Nerve cells called stretch receptors in lung tissue are stimulated 
Receptors communicate with pons 
Sends impulses to diaphragm to relax

Question 21

Composition of air that comes into the body

Answer 21

21pc oxygen

0.04pc co2

Question 22

Air that leaves the body composition

Answer 22

15pc oxygen

4pc c02