W3 Flashcards
PROCESS THAT INCLUDES
CELL RENEWAL
CELL PROLIFERATION, DIFFERENTIATION, MATURATION
HEMATOPOIESIS
STEM CELL THEORY
ALL BLOOD CELLS ARE DERIVED FROM A SINGLE PROGENITOR STEM CELL
MOST WIDELY ACCEPTED
MONOPHYLETIC THEORY
MONOPHYLETIC THEORY
STEM CELL CALLED
PLURIPOTENT HEMATOPOIETIC STEM CELL
STEM CELL THEORY
EACH BLOOD CELL LINEAGES DERIVED FROM ITS OWN UNIQUE STEM CELL
POLYPHYLETIC THEORY
PRENATAL HEMATOPOIESIS: - PERIOD
CHIEF SITE:
19 DAYS EMBRYOLOGIC DEVELOPMENT
MESOBLASTIC PERIOD
YOLK SAC
FOUND IN YOLK SAC OF MESODERMAL CELLS
PRIMITIVE ERYTHROBLAST
2ND WEEK OF FETAL LIFE FORMATION OF - IN YOLK SAC
BLOOD ISLANDS
9TH WEEK OF FETAL LIFE
DEVELOPMENT OF -
PRIMITIVE ERYTHROBLAST
EMRYONIC HEMOGLOBIN
2 ZETA
2 EPSILON
GOWER 1
EMRYONIC HEMOGLOBIN
2 ALPHA
2 EPSILON
GOWER 2
EMRYONIC HEMOGLOBIN
2 ZETA
2 GAMMA
PORTLAND
PRENATAL HEMATOPOIESIS: -PERIOD
BEGINS AT 4-5 GESTATIONAL WEEKS
STARTS ON 2ND MONTH
HEPATIC PERIOD
PRENATAL HEMATOPOIESIS: - PERIOD
CHIEF SITE:
3RD MONTH OF FETAL LIFE
LIVER
HEPATIC PERIOD
PRENATAL HEMATOPOIESIS: HEPATIC PERIOD
OTHER ORGANS
THYMUS
T CELL
PRENATAL HEMATOPOIESIS: HEPATIC PERIOD
OTHER ORGANS
KIDNEYS/SPLEEN
B CELL
ERYHTOPOIESIS IN THIS SITE UNTIL NORMAL GESTATION
SPLENIC
SPLEEN: BECOMES MINIMAL BY THE 5TH MONTH
MYELOPOIESIS
SPLEEN: LIFETIME
LYMPHOPOIESIS
FETAL HEMOGLOBIN
2 ALPHA
2 GAMMA
HB F
PRENATALL HEMATOPOIESIS: - PERIOD
HEMATOPOIESIS BEGINS TO DEVELOP IN BONE MARROW CAVITY
START 5MOS OF FETAL LIFE
MEDULLARY/MYELOID
MYELOID-TO-ERYTHROID RATIO
ADULT LEVEL
21 WEEKS OF GESTATION
3:1
BY THE END OF - MONTHS THE BM BECOMES THE PRIMARY SITE OF HEMATOPOIESIS
6 MOS
ADULT HEMOGLOBIN
2 ALPHA
2 BETA
HB A1
ADULT HEMOGLOBIN
2 ALPHA
2 DELTA
HB A2
PRIMITIVE , UNDIFFERENTIATED CELL
HEMOCYTOBLAST/ STEM CELLS
TISSUE LOCATED WITHIN THE CAVITIES OF THE CORTICAL BONES
BONE MARROW
BONE MARROW CAVITIES CONSIST OF - RESEMBLING A HONEYCOMB
TRABECULAR BONE
2 TYPES OF BM:
HEMATOPOIETICALLY ACTIVE MARROW
RED MARROW
2 TYPES OF BM:
HEMATOPOIETICALLY INACTIVE MARROW
PRIMARILY COMPOSED OF ADIPOCYTES
YELLOW MARROW
BONE MARROW REPRESENT -% TOTAL BODY WEIGHT
3.5-6%
1500G
SITE OF B CELL MATURATION
BONE MARROW
RATIO OF RED MARROW TO YELLOW MARROW
MARROW CELLULARITY
MARROW CELLLULARITY
MARROW HAS 30-70% HSCS
NORMOCELLULAR
MARROW CELLLULARITY
MARROW HAS >70% HSCS
HYPERCELLULAR/HYPERPLASTIC
MARROW CELLLULARITY
MARROW HAS <30% HSCS
HYPOCELLULAR/HYPOPLASTIC
MARROW CELLLULARITY
MARROW HAS FEW OR NO HSCS
APLASTIC