Hemapoiesis an der Silliman University | Karteikarten & Zusammenfassungen

Lernmaterialien für Hemapoiesis an der Silliman University

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TESTE DEIN WISSEN
In the early embryo these blood cells arise in the _________.
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yolk sac mesoderm
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A continuous process by which the cellular elements of blood are replenished. Also called Hematopoiesis. 
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Hemopoiesis
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Occurs in the bone marrow of adults and children 
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Hemopoiesis
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TESTE DEIN WISSEN
In the first timester these blood cells arise in the ________ 
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TESTE DEIN WISSEN
Yolk sac mesoderm
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In the second trimester, hemopoiesis occurs primarily int the developing ________ with the spleen playing a minor role
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TESTE DEIN WISSEN
Liver
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Skeletal elements begin to ossify and __________ develops in their medullary cavities so in the third trimester marrow of specific bones becomes the major hemopoietic organ.
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Bone marrow 
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Are pluripotent cells capable of asymmetric division and self-renewal 
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Stem cells 
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True or false

Some of their daughter cells form specific, irreversibly committed progenitor cells, and other daughter cells remain as a small pool of slowly dividing stem cells.
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True 
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All blood cells arise from a single type of pluripotent _____________ in the bone marrow that can give rise to all the blood cell types 
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hemopoietic stem cells
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These pluripotent stem cells are rare, proliferate slowly, and give rise to two major lineages of progenitor cells with restricted potentials (committed to produce specific blood cells):
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  • lymphoid cells (lymphocytes)
  • myeloid cells (Gr. myelos, marrow), which develop in bone marrow
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Myeloid cells include
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  • granulocytes
  • monocytes
  • erythrocytes
  • megakaryocytes
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Mature blood cells have a relatively short life span and must be continuously replaced with new cells from precursors developing during ___________
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hemopoiesis
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Q:
In the early embryo these blood cells arise in the _________.
A:
yolk sac mesoderm
Q:
A continuous process by which the cellular elements of blood are replenished. Also called Hematopoiesis. 
A:
Hemopoiesis
Q:
Occurs in the bone marrow of adults and children 
A:
Hemopoiesis
Q:
In the first timester these blood cells arise in the ________ 
A:
Yolk sac mesoderm
Q:
In the second trimester, hemopoiesis occurs primarily int the developing ________ with the spleen playing a minor role
A:
Liver
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Q:
Skeletal elements begin to ossify and __________ develops in their medullary cavities so in the third trimester marrow of specific bones becomes the major hemopoietic organ.
A:
Bone marrow 
Q:
Are pluripotent cells capable of asymmetric division and self-renewal 
A:
Stem cells 
Q:
True or false

Some of their daughter cells form specific, irreversibly committed progenitor cells, and other daughter cells remain as a small pool of slowly dividing stem cells.
A:
True 
Q:
All blood cells arise from a single type of pluripotent _____________ in the bone marrow that can give rise to all the blood cell types 
A:
hemopoietic stem cells
Q:
These pluripotent stem cells are rare, proliferate slowly, and give rise to two major lineages of progenitor cells with restricted potentials (committed to produce specific blood cells):
A:
  • lymphoid cells (lymphocytes)
  • myeloid cells (Gr. myelos, marrow), which develop in bone marrow
Q:
Myeloid cells include
A:
  • granulocytes
  • monocytes
  • erythrocytes
  • megakaryocytes
Q:
Mature blood cells have a relatively short life span and must be continuously replaced with new cells from precursors developing during ___________
A:
hemopoiesis
Hemapoiesis

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