risk factor Anything that is linked to an increased chance of developing a disease or an
infection.
stroke A loss of brain function due to a blockage of the blood supply to the brain.
Points to Consider
- Do you think there is a relationship between the cardiovascular system and the respi-
ratory system? What could it be? - Do you think hypertension affects the ability of the blood to release carbon dioxide
and pick up oxygen in the lungs? Why?
Image Sources
(1) Capillaries connect arteries and veins.. Public Domain-gov.(2) Keksbaggern.
http://commons.wikimedia.org/wiki/File:Christmas_Cookies.jpg. CC-BY.(3) http://commons.wikimedia.org/wiki/File:Illu_lymph_capillary.png. Public
Domain.(4) http://commons.wikimedia.org/wiki/File:Heart_attack_diagram.png. Public
Domain.(5) http://commons.wikimedia.org/wiki/File:Illu_lymphatic_system.jpg. Public
Domain.(6) http://commons.wikimedia.org/wiki/Image:Humhrt2.jpg. (a)CC-BY.(7) http://commons.wikimedia.org/wiki/File:Diagram_of_the_human_heart.svg.
GNU-FDL.(8) Patrick J. Lynch, C. Carl Jaffe, M.D..http://commons.wikimedia.org/wiki/File:
Heart_left_anterior_oblique_diagrams.svg. CC-BY.(9) http://en.wikipedia.org/wiki/File:Tonsils_diagram.jpg. Public Domain.(10) Bruce Wetzel, Harry Schaefer.
http://visualsonline.cancer.gov/details.cfm?imageid=2129. Public Domain.
(11) CK-12 Foundation.http://commons.wikimedia.org/wiki/File:Illu_artery.jpg.
Public Domain.
