Sporozoa - Toxoplasma gondii which causes toxoplasmosis a...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Sporozoa Members of the phylum Sporozoa are exclusively parasites. They are so named because some  members produce sporelike bodies. Often they have an amoeboid body form, but they are not  related to the Sarcodina. Sporozoans are generally parasitic organisms with complex life cycles involving several stages. One  of the best-known members of the group is the  Plasmodium  species, which are the agents of  malaria. The organisms spend portions of their life cycle within mosquitoes. After being injected into  the human bloodstream by the mosquito, the parasites invade the red blood cells, undergo  numerous changes, and emerge from the red blood cells, destroying them. The infected human  experiences a malaria attack soon after.  Another important member of the Sporozoa group is 
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Toxoplasma gondii , which causes toxoplasmosis, a disease of the white blood cells. Toxoplasmosis is normally not a dangerous disease, but pregnant women can pass it to their offspring, where it can cause tissue damage. Also, persons with AIDS are susceptible to severe cases of toxoplasmosis. Two other important pathogens of the Sporozoa group are Cryptosporidium coccidi and Pneumocystis carinii . Both of these organisms cause severe disease in AIDS patients. The first causes a severe intestinal diarrhea that is accompanied by the loss of substantial volumes of water; the second causes a type of pneumonia. Both of these diseases typify the opportunistic diseases that occur when a person is infected with HIV....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern