ES ch7

Microscopic organisms that are disease-causing agents are called

pathogens

Prevention includes a wide range of activities aimed at reducing risks or threats to health. Taking an online health class and learning about healthy habits is an example of

primary prevention

HIV can potentially be transmitted through all of the following EXCEPT

sharing food utensils with an infected person.

Physical and chemical barriers prevent pathogens from getting into our body. The most comprehensive barrier is the waterproof layer of _______ that covers the body's surface.

skin

The common cold is a virus, which means it cannot be treated with antibiotics.

true

Vaccines contain killed pathogens, or extracts from pathogens, or modified strains of pathogens that are no longer harmful.

true

A key reason for the resurgence of measles and mumps infections is

a public backlash against vaccinations

Since we have our immune system to protect us from disease, why do we still need a vaccine?

all available answers

When invaded by antigens, the body forms substances called

antibodies

Any substance that triggers an immune response is a(n)

antigen

Sierra, now 31, has been trying to get pregnant since she got married 4 years ago. Her doctor suspects that their infertility problem was likely caused by her history of Pelvic Inflammatory Disease from the most commonly reported STI. During her early 20s, Sierra had contracted

chlamydia

Besides practicing abstinence, the best way to avoid contracting a sexually transmitted infection is to use a __________ correctly every time you have sex.

condom

Edward Jenner succeeded in creating a vaccine against smallpox by injecting patients with material of which disease?

cowpox

You want to decrease your risk of developing an infectious disease. Which of the following factors can you control?

eating habits

Hepatitis B can lead to

liver cancer

Francisco just found out his HIV test is positive. Which of the following statements is TRUE?

Francisco should seek treatment as soon as possible to slow progression of the disease.

Bethany is 42 and has cervical cancer. It is probably related to an infection she had during her college years, which was

HPV

When Maria's boyfriend returned from the health clinic, he told her he had been diagnosed with gonorrhea. Which of the following statements is TRUE?

Maria should go to the clinic to get tested for gonorrhea and treated if she has it.