structures of the respiratory system 2

Question 1

Describe the location and function of vibrissae

Answer 1

l-nasal cavity
f-prevents debris entering the nose

Question 2

Describe the location and function of conchae

Answer 2

l-nasal cavity
f-causes turbulent air flow
increases the contact of air with mucous membrane of the nasal cavity, facilitates the warming and humidifying of inspired air

Question 3

Describe the location and function of golbet cells of respiratory mucosa

Answer 3

l-nasal cavity and down into lungs
f-secrete mucus to trap particles inhaled in the air

Question 4

Describe the location and function of cilia of respiratory mucosa

Answer 4

l-nasal cavity and down to lungs
f-moves mucus towards the pharynx to be swallowed or coughed up

Question 5

Describe the location and function of blood vessels of respiratory mucosa

Answer 5

l-nasal cavity down to lungs
f-warm air

Question 6

Describe the location and function of olfactory mucosa and olfactory nerve endings

Answer 6

l-nasal cavity
f-detects odour

Question 7

describe the location and function of pharyngeal tonsils

Answer 7

l-nasopharynx
f-mounts immune response against airborne pathogens

Question 8

Describe the location and function of palatine and lingual tonsils

Answer 8

l-oropharynx
f-mount immune respinse against airborne pathogens

Question 9

Describe the location and function of epiglottis

Answer 9

l-larynx
f-directs food and drink away from the airway into the oseophagus

Question 10

describe the location and function of vestibular folds

Answer 10

l-larynx
f-directs food and drink away from the airway into the oseophagus

Question 11

Describe the location and function of vocal cords

Answer 11

l-larynx
f-sound production

Question 12

Describe the location and function of trachealis muscles

Answer 12

l-trachea
f-adjusts air flow, allows for distension of oesophagus during swallowing

Question 13

Describe the location and function of mucocillary esculator

Answer 13

l-trachea,bronchi,bronchioles
f-traps and removes debris from airways

Question 14

what is the bronchopulmonary segment?

Answer 14

the portion of the lung supplied by each tertiary bronchus

Question 15

Write down, in order, the structures through which blood flows on its journey from the heart
to the lungs and back again.

Answer 15

Right atrium
right ventricle
pulmonary trunk
pulmonary artery pulmonary arteriole capillary network around alveoli
pulmonary venule pulmonary vein
left atrium
left ventricle

Question 16

in the resting lung, alveolar air pressure is equivalent to atmospheric air pressure but
intrapleural pressure is slightly lower. Briefly describe why this is the case

Answer 16

the lungs have elastic recoil and they are trying to pull the plural sack away from the thoracic wall.
However, the parietal pleurae are anchored to the thoracic wall so that they cant collapse.

The result is a reduced pressure in the pleural fluid which balances the tendency of the lungs to
collapse with the inability of the pleurae to be pulled away from the chest wall