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Blastomere
Blastomere A cell from a morula-stage embryo. RELATED TERMS-------------------------------------- Cell Fundamental structural unit of all life. The cell consists primarily of an outer plasma membrane, which separates it from the environment; the genetic material (DNA), which encodes heritable information for the maintainance of life; and the cytoplasm, a heterogeneous assemblage of ions, molecules, and fluid. Embryo The early stages of development before an organism becomes self supporting. SIMILAR TERMS-------------------------------------- BLAST Abbreviation for Basic Local Alignment Search Tool, a computer program that identifies homologous genes in different organisms (such as worms, the fruit fly, mice, and humans). Homologous genes are genes in different species that share similar structures and functions. Blast phase Refers to advanced chronic myelogenous leukemia. In this phase, the number of immature, abnormal white blood cells in the bone marrow and blood is extremely high. Also called blast crisis. Blastocoel The fluid-filled cavity within the blastula. Blastocyst The developmental stage of the fertilized ovum by the time it is ready to implant; formed from the morula and consists of an inner cell mass, an internal cavity, and an outer layer of cells (the trophoblast). Blastocyst cavity The fluid-filled cavity within the blastocyst, sometimes referred to as the blastocoel. Blastocystis hominis The parasitic organism that causes blastocystosis. See Blastocystosis. Blastocystis infection See: Blastocystosis. Blastocystosis Infection with Blastocystis hominis, a common microscopic parasite found worldwide. Symptoms may include watery or loose stools, diarrhea, abdominal pain, anal itching, weight loss, and excess gas. Some people have no symptoms. The organism can remain in the intestines for weeks, months, or years. Diagnosis requires finding it in the stool, How Blastocystis is transmitted is unknown, although the number of people infected seems to increase in areas where sanitation and personal hygiene is inadequate. Treatment is with the antibiotics metronidazole or iodoquinol. Blastokinin See: Uteroglobin. Blastoma "A tumor thought to arise in embryonic tissue. The term ""blastoma"" is commonly used as part of the name for a tumor as, for examples, in glioblastoma and medulloblastoma (types of brain tumors), hepatoblastoma (a liver tumor), nephroblastoma ( Wilms tumor of the kidney), neuroblastoma (a childhood tumor of neural origin), osteoblastoma (a bone tumor) and retinoblastoma (a tumor of the retina)." Blastomyces dermatitidis The fungus that causes a disease called blastomycosis. Blastomycosis Infection with a fungus called Blastomyces dermatitidis. The infection causes symptoms in about 50% of cases. It usually presents as a flu-like illness with fever, chills, productive cough, myalgia, arthralgia and pleuritic chest pain. Some patients fail to recover and develop chronic pulmonary infection or widespread disseminated infection (affecting the skin, bones, and genitourinary tract). It occasionally affects the meninges which cover the brain and spinal cord. Blasts "Immature blood cells. Leukemic blasts do not grow and age normally; they proliferate wildly and fail to mature." Blastula Term (often used in lower vertebrates) to describe an early stage in the development of an embryo consisting of a hollow sphere of cells enclosing a fluid-filled cavity called the blastocoel. The term blastula sometimes is used interchangeably with blastocyst. PREVIOUS AND NEXT TERMS-------------------------------------- Bacterial vaginosis Very common vaginal infection characterized by symptoms such as increased vaginal discharge or itching, burning, or redness in the genital area. B-lymphocytes Or B-cells are white blood cells that produce and secrete antibodies into the blood. See also Cell memory. Blastocoel The fluid-filled cavity within the blastula. Blastocyst cavity The fluid-filled cavity within the blastocyst, sometimes referred to as the blastocoel. Blastomere Blastula Term (often used in lower vertebrates) to describe an early stage in the development of an embryo consisting of a hollow sphere of cells enclosing a fluid-filled cavity called the blastocoel. The term blastula sometimes is used interchangeably with blastocyst. Baby blues Mild depression that may last a couple of weeks following childbirth, usually the result of dramatic hormonal swings and the letdown after the excitement of labor and birth. See postpartum depression. Bag of waters Sac filled with amniotic fluid in which the fetus grows, which may rupture naturally as labor begins or be punctured to speed up labor. Birth canal The passageway - made up of the cervix, vagina, and vulva - the baby travels through during birth. Birthing room A place designed and equipped for women giving birth. Some are in hospitals, others are totally separate facilities. We thank you for using the Medical Glossary to search for Blastomere. If you have a better definition for Blastomere than the one presented here, please let us know by making use of the suggest a term option. This definition of Blastomere may be disputed by other professionals. Our attempt is to provide easy definitions on Blastomere and any other medical topic for the public at large.
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