Human Health and disease Flashcards
Define health.
A state of complete physical, mental and social well-being and not merely the absence of disease or infirmity. It is stated by WHO in 1948.
Name the type of immunity given by antibody producing B- lymphocytes.
Humoral immunity.
What are pathogens?
The group of organisms belonging to bacteria, virus, fungi, protozoans, helminths etc causing disease are called pathogens.
Why secondary response of the immune system to a pathogen is highly intensified and fast?
Due to the fact that our body appears to have memory of first encounter by the same pathogen.
What are infectious diseases?
Diseases caused by pathogens are easily transmitted from an infected person to a healthy person are called infectious disease
What do you mean by anamnestic response of the immune system?
Subsequent encounter with the same pathogen initiates a highly intensified immunity response due to the presence of memory cells is called secondary response or anamnestic response.
Mention an example for infectious disease.
Acquired Immuno deficiency syndrome (AIDS)
What is secondary immune response?
Subsequent encounter with the same pathogen initiates a highly intensified immunity response due to the presence of memory cells is called secondary response or anamnestic response.
What is primary immune response?
When our body encounters a pathogen for the first time it produces a lower intensity immunity response is called primary response
What are non-infectious diseases?
Diseases which cannot be transmitted from an infected person to an healthy person is called non-infectious disease
What are interferons?
The protein secreted by virus infected cells which prevent further multiplication of viruses is called interferons
Write the scientific name of the pathogen that causes typhoid/ Write the scientific name of the pathogen which causes sustained high fever, stomach pain, constipation, loss of appetite.
Salmonella typhi.
. How do interferons provide immunity to the body?
Prevent further multiplication of viruses.
Mention one cytokine barrier that provides immunity to our body/ Name the protein produced by the virus-infected human cells which prevent further multiplication of viruses
Interferons.
Name a disease you have studied with symptoms like sustained high fever, stomach pain, constipation, loss of appetite/ Name the disease diagnosed by Widal test.
Typhoid.
How do natural killer cells and macrophages provide immunity to the body?
They phagocytose and destroy microbes.
Mention the mode of transmission of Salmonella typhi.
Contaminated food and water.
Mention one cellular barrier that provides immunity to our body.
Polymorphonuclear leucocytes, monocytes, natural killers and macrophages.
Name the test which confirms typhoid/ Name the test which confirms infection by Salmonella typhi
Widal test.
How do physiological barriers provide immunity to the body?
They prevent microbial growth in our body