How are pathogens absorbed into the body?

How are pathogens absorbed into the body?

Microorganisms capable of causing disease—or pathogens—usually enter our bodies through the eyes, mouth, nose, or urogenital openings, or through wounds or bites that breach the skin barrier. Organisms can spread, or be transmitted, by several routes.

What are the four most common sources of infection?

Infectious diseases can be caused by:

• Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
• Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
• Fungi.
• Parasites.

What are common methods of transmission of diseases?

For example:

• Airborne transmission. Some infectious agents can travel long distances and remain suspended in the air for an extended period of time.
• Contaminated objects.
• Food and drinking water.
• Animal-to-person contact.
• Animal reservoirs.
• Insect bites (vector-borne disease)
• Environmental reservoirs.

How do bacteria get into bloodstream?

Bacteria can enter your bloodstream through a scraped knee or other wound. Urinary tract infections are a common source of blood poisoning. Even a sinus infection can cause bacteria to enter your bloodstream. Your immune system will eliminate small amounts of bacteria.

How does infection spread through food?

Germs are transmitted from raw foods, such as chicken, to hands while preparing a meal. The germs on the hands are then transferred to other uncooked foods, such as salad. Cooking the raw food kills the initial germs, but the salad remains contaminated.

How does an infection spread through the body?

An infection occurs when germs enter the body, increase in number, and cause a reaction of the body. Source: Places where infectious agents (germs) live (e.g., sinks, surfaces, human skin) Susceptible Person with a way for germs to enter the body Transmission: a way germs are moved to the susceptible persont

How are substances absorbed into the human body?

Absorption (skin) Skin absorption is a route by which substances can enter the body through the skin. Along with inhalation, ingestion and injection, dermal absorption is a route of exposure for toxic substances and route of administration for medication. Absorption of substances through the skin depends on a number of factors,…

What are three things necessary for an infection to occur?

Three things are necessary for an infection to occur: Source: Places where infectious agents (germs) live (e.g., sinks, surfaces, human skin) Susceptible Person with a way for germs to enter the body. Transmission: a way germs are moved to the susceptible persont.

What causes the absorption of substances through the skin?

Absorption of substances through the skin depends on a number of factors: Concentration Molecular Weight of the molecule Duration of contact Solubility of medication Physical condition of the skin Part of the body exposed including the amount of hair on the skin