1.2 Functions Of The Respiratory System

Question 1

What is the respiratory functions

Answer 1

Provide extensive surface area for gas exchange between air and circulating blood - aveoli and blood in papillaries
Move air to and from exchange surfaces of lungs

Question 2

Nonrespiratory functions

Immune functions

Answer 2

Protection against drying out
Protection from inhaled pathogens and irritating substances - filtering of foreign substances
Respiratory system is lined with
Mucous membranes that contain mucosal-associated lymphoid tissue it secretes : sceretory , collectins and defensins
Filtering of foreign material : mechanism - mucus secretion traps foreign particles : contains antibodies , ciliated epithelium beats upwards towards pharynx , saline solution : enables mucus escalator function properly

Question 3

Non respiratory functions all

Answer 3

Immune functions 
Participates in olfactory senses 
Metabolic role 
Homeostatic regulation of blood 
Egulation of blood pressure 
Produce sounds 
Blood reservoir 
Temperature control

Question 4

What is a restrcitive lung disease and give an example

Answer 4

When you have a difficulty expanding your lungs with air

Intersititial lung disease

Question 5

What is an obstructive lung disease and give an example?

Answer 5

Condition found when it is hard to exhale - hampers air flow rate
Chronic obstructive pulmonary disease , asthma , cystic fibrosis

Question 6

Explain cystic fibrosis

Answer 6

Inadequate ion secretion

1. Lack of saline solution
2. Decrease cilia movement
3. Mucus becomes thick and sticky -> trapped bacteria cannot be removed , starts to colonize

Question 7

Explain bronchitis

Answer 7

Improper function of cillia

1. Acute - virus and bacterial infections , less than 3 weeks
2. Chronic - smoking paralyzes cilia , mucous builds up, chronic cough more acute infections