Question

1. a communicable disease is a disease caused by a virus. influenza, also known as the flu, is a very serious communicable disease. which action describes a way to avoid catching the flu? a. get a flu vaccine. b. take a flu virus antibiotic. c. get plenty of exercise with people who have the flu. d. get a blood transfusion from someone who has the flu. 11. during a long run, hudsons skeletal muscles signal to the rest of his body that they need extra oxygen. which of the following organ systems will this need most rapidly? a. circulatory b. digestive c. excretory d. immune

Explanation:

1. Vaccines are used to prevent viral - caused diseases like the flu. Antibiotics are for bacterial infections, exercise doesn't prevent getting the flu directly, and a blood transfusion from a flu - infected person is dangerous and not a preventive measure.
2. During exercise like a long run, skeletal muscles need more oxygen. The circulatory system is responsible for transporting oxygen (via blood) to the muscles. The digestive system is for breaking down food, the excretory system for waste removal, and the immune system for fighting pathogens.

Answer:

1. A. Get a flu vaccine.
2. A. circulatory