When comparing the flow of lymph in the lymphatic system with the flow of blood in the circulatory system, it can be said that the lymphatic system also a. contains fluid that travels in only one direction. b. uses valves to prevent backward flow. c. contains fluid that travels in a closed circuit. d. uses a pump.

Match the government contribution to mental health to the issue it was created to address. 1. community mental health act of 1963 first federal funding for mental health care 2. commission on mental health, est. 1977 created to determine the mental health needs of the united states 3. the decade of the brain federal funding invested to research mental illness and functions of the brain

Select all of the possible methods of aids transmission.

Explain why hiv is a life-threatening sti.