What is broncoconstriction?
Tightening of the airways due to muscle contractions
What happens during broncoconstriction?
When irritants are inhaled–> ACh is released by PNS (CNS)—> binds to neurotransmitters—> bronchioles constricts—> diameter of airways in reduced
What are the consequences of bronoconstriction?
Animal has to work twice as hard in order to gain oxygen so becomes more tired easier.