Question

1. Microorganisms invade the host through: a)Blood b)Bone marrow c)Mucosa and Skin d)All the routes above are correct

Answer 1

Ans:-

d.All the routes above are correct.

Microorganism can invade the host through Blood,Bone marrow,mucosa and skin.

a.Invasion through Blood:-Many microorganisms belonging to the group of virus and bacteria can invade a host through blood.They cause blood borne diseases.A bloodborne disease is a disease that can be spread through contamination by blood and other body fluids.most common among the disease are HIV,hepatitis B,hepatitis C.they usually transmit through syringe,by taking blood of affected person during needs.

b.Invasion through Bone marrow:- After bone marrow transplant our immune system is too weak.And our body is vulnerable to bone marrow infections.we are supposed to infect by bacteria,virus and respiratory virus.At this time we should pay attention to hygiene to prevent infection.

c.Invasion through Mucosa and skin:-Some diseases spread through via direct contact with infected skin and mucosa membranes.As wounds and bites breach skin barrier microbes can easily invade the host.disease like cold sores(herpes simplex virus type1),candidiasis caused by excess yeast on skin snd mucus membrane.