Lung Fuction and Structure

Question 1

What NTs are used in parasympathetic nervous system?

Answer 1

Acetylcholine

Question 2

What are the two different adrenoceptors and what is each one activate?

Answer 2

a1 - vascular smooth muscle contraction

a2 - “ “. Pre junction all regulation of NA release

Question 3

What do the 3 different beta adrenoceptors activate?

Answer 3

b1 - heart muscles
b2 - airway smooth muscle relaxation
b3 - skeletal muscle, adipose tissue

Question 4

What do the 5 muscarinic receptors activate?

Answer 4

M1 - CNS, salivary glands, gastric glands

M2- CNS, heart rate contraction, gi smooth muscle contraction

M3 - salivary glands, GI smooth muscle airways
M4 & 5 - CNS

Question 5

Apart from relaxation of the airways what else can b2 adrenoceptors do?

Answer 5

Inhibit secretion of mucus on mucous glands to clear mucus

Question 6

I’m terms of lungs define the following: compliance, elastance, fibrosis

Answer 6

Compliance - ability of lungs to stretch

Elastance - ability for lung to recoil

Fibrosis - caused by lung damage

Question 7

What NTs are involved in sympathetic nervous system

Answer 7

Noradrenaline