How does disease affect organism?

How does disease affect organism?

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They’re normally harmless or even helpful. But under certain conditions, some organisms may cause disease.

What are the effects of infectious diseases?

For some conditions, complications may include wheezing, skin rash, or extreme fatigue. Mild complications usually disappear as the infection resolves. Certain infectious diseases may cause cancer. These include hepatitis B and C (liver cancer), and human papillomavirus (HPV) (cervical cancer).

What is heart disease and how does it affect the body?

As heart muscle thickens, it can limit blood flow, so you end up short on oxygen. That can cause problems like dizziness, fainting, and shortness of breath. Your heart’s rhythm also might get thrown off, and your heart might flutter, pound, or start racing.

How do infectious agents cause disease?

Intracellular infectious agents frequently cause disease by damaging the cells that house them. The specific killing of virus-infected cells by cytotoxic T cells thus not only prevents virus spread but removes damaged cells.

How do you know if your body is fighting a virus?

In addition to aches and pains, chills are another tell-tale sign that your body may be fighting off a virus. In fact, chills are often one of the first symptoms that people notice when they’re coming down with the flu.

What are the 5 modes of transmission?

The modes (means) of transmission are: Contact (direct and/or indirect), Droplet, Airborne, Vector and Common Vehicle. The portal of entry is the means by which the infectious microorganisms gains access into the new host.

What is the most infectious disease?

Bubonic and Pneumonic Plagues. Perhaps the most notorious of all infectious diseases, the bubonic and pneumonic plagues are believed to be the cause of the Black Death that rampaged through Asia, Europe and Africa in the 14th century killing an estimated 50 million people.

What are 5 infectious diseases?

Common Infectious Diseases

  • Chickenpox.
  • Common cold.
  • Diphtheria.
  • E. coli.
  • Giardiasis.
  • Infectious mononucleosis.
  • Influenza (flu)

What are the signs of an unhealthy heart?


  • Chest pain, chest tightness, chest pressure and chest discomfort (angina)
  • Shortness of breath.
  • Pain, numbness, weakness or coldness in your legs or arms if the blood vessels in those parts of your body are narrowed.
  • Pain in the neck, jaw, throat, upper abdomen or back.

What are the 5 major types of infectious agents?

agents cause a wide variety of diseases affecting various parts of the body. The five main types of infectious agents are bacteria, protozoa, viruses, parasitic worms, and fungi. RNA, and sometimes fatty molecules known as lipids.

At what age is your immune system the strongest?

When your child reaches the age of 7 or 8, most of his immune system development is complete. In our practice at Active Health, we believe in a whole body (holistic) approach to health and well being.

How does a disease affect the human body?

, Medical student. A disease is basically a malfunction. This malfunction may be caused by an external factor like trauma, pathogens, radiation etc. or an internal factor like a heritage of a disease causing gene. Human body is a collection of organs so there is no way that a disease can not affect an organ.

How does disease affect the homeostasis of an organism?

Disease affects an organism by disrupting the organism’s homeostasis. Homeostasis is the process by which an organism maintains a steady internal environment (stable body temperature, blood sugar level, electrolyte balance, etc.). A disease will disrupt this process.

When does an infection lead to a disease?

Infection with a pathogen does not necessarily lead to disease. Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply.

How does a disease affect the cell environment?

Depends on the disease. In general, there may be production of toxins, cytokines, or waste products, to mention just a few. Bacteria typically produce a toxin. Viruses typically cause eventual cell death and release of all sorts of things into the cellular environment.