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Glossary

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  • Chromosome 17

    (KROH-muh-some...)

    One of a pair of chromosomes that is part of the 46 chromosomes found in the nucleus of most human cells. Specific changes in chromosome 17 may be found in patients with certain genetic conditions and some types of cancer, including bladder cancer, brain cancer, and leukemia. Checking for these changes may help diagnose cancer or find out if cancer has come back. Chromosome 17 is a type of tumor marker.

  • Chromosome 7

    (KROH-muh-some...)

    One of a pair of chromosomes that is part of the 46 chromosomes found in the nucleus of most human cells. Specific changes in chromosome 7 may be found in patients with certain genetic conditions or some types of cancer, including bladder cancer, leukemia, and lymphoma. Checking for these changes may help diagnose cancer or find out if cancer has come back. Chromosome 7 is a type of tumor marker.

  • Chromosomes

    KROH-muh-some

    Thread-like structures that hold all the genes. Except for sperm and egg cells, each human cell carries 23 pairs of chromosomes. In total, each persons cells have 46 chromosomes, 23 come from the mother and 23 come from the father.

  • Chronic

    (KRAH-nik)

    A disease or condition that persists or progresses over a long period of time.

  • Chronic myeloid leukemia

    KRAH-nik MY-eh-loyd loo-KEE-mee-uh

    An indolent (slow-growing) cancer in which too many myeloblasts are found in the blood and bone marrow. Myeloblasts are a type of immature blood cell that makes white blood cells called myeloid cells. Chronic myeloid leukemia may get worse over time as the number of myeloblasts increases in the blood and bone marrow. This may cause fever, fatigue, easy bleeding, anemia, infection, a swollen spleen, bone pain, or other signs and symptoms. Chronic myeloid leukemia is usually marked by a chromosome change called the Philadelphia chromosome, in which a piece of chromosome 9 and a piece of chromosome 22 break off and trade places with each other. It usually occurs in older adults and rarely occurs in children. Also called chronic granulocytic leukemia, chronic myelogenous leukemia, and CML.

  • Cimetidine

    (sy-MEH-tih-deen)

    A drug usually used to treat stomach ulcers and heartburn. It is also commonly used in a regimen to prevent allergic reactions.

  • Circadian Rhythm

    (sir-KAY-dee-un RIH-thum)

    The natural cycle of physical, mental, and behavior changes that the body goes through in a 24-hour cycle. Circadian rhythms are mostly affected by light and darkness and are controlled by a small area in the middle of the brain. They can affect sleep, body temperature, hormones, appetite, and other body functions. Abnormal circadian rhythms may be linked to obesity, diabetes, depression, bipolar disorder, seasonal affective disorder, and sleep disorders such as insomnia. Circadian rhythm is sometimes called the bodys clock.

  • Circulation

    (ser-kyoo-LAY-shun)

    In the body, the flow of blood through the heart and blood vessels, and the flow of lymph through the lymph vessels.

  • Circulatory system

    (SER-kyoo-lah-tor-ee SIS-tem)

    The system that contains the heart and the blood vessels and moves blood throughout the body. This system helps tissues get enough oxygen and nutrients, and it helps them get rid of waste products. The lymph system, which connects with the blood system, is often considered part of the circulatory system.

  • Cirrhosis

    (seh-ROH-sis)

    A type of chronic, progressive liver disease in which liver cells are replaced by scar tissue.