MindMap Gallery Medicine Chapter 5 Blood (Peripheral Blood)
This is a mind map about Chapter 5 Blood (Peripheral Blood). Blood (Peripheral Blood) 5L, 7%, anticoagulant (heparin, sodium citrate), centrifuged upper plasma, lower red blood cells, middle thin layer For leukocytes and platelets (soluble proteinogen → insoluble fibrin → coagulation).
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This is a mind map about bacteria, and its main contents include: overview, morphology, types, structure, reproduction, distribution, application, and expansion. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about plant asexual reproduction, and its main contents include: concept, spore reproduction, vegetative reproduction, tissue culture, and buds. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about the reproductive development of animals, and its main contents include: insects, frogs, birds, sexual reproduction, and asexual reproduction. The summary is comprehensive and meticulous, suitable as review materials.
Blood (peripheral blood) 5L, 7%, anticoagulant (heparin, sodium citrate), after centrifugation, the upper layer is plasma, the lower layer is red blood cells, and the middle thin layer is white blood cells and platelets (soluble proteinogen → insoluble fibrin → coagulation)
Formed components of blood cells 45%
Bone marrow production, hemogram: determination of morphological and quantitative percentage of blood cells and hemoglobin content Stain blood smear with Wright/Giemsa staining method
red blood cells
Biconcave disc shape, mature anucleate and organelle-free. The intracellular hemoglobin (Hb) is filled with red color, male 120-150g/L, female 110-140g/L.
Elastic and plastic (morphological variability): Reason: Red blood cells are fixed on a deformable disc-shaped grid structure, called the red blood cell membrane skeleton. Main components: spectrin, actin
The cell membrane has mosaic proteins (blood group antigen A and blood group antigen B). Transfusion of the wrong blood type causes hemolysis. The remaining red blood cell membrane sacs after hemolysis are called blood ghosts.
transport oxygen, carbon dioxide
The average life span is 120 days. Aged red blood cells are cleared by macrophages when passing through the spleen and liver.
Anemia: RBC number <3*10^12/L, Hb content <100g/L Erythrocyte sedimentation rate: The distance that red blood cells sink at the end of the first hour
The remaining ribosomes of immature red blood cells show a fine mesh shape when stained with brilliant tar blue, so they are called reticulocytes.
Increased reticulocyte count in patients with anemia indicates effective treatment
leukocyte
Granulocytes (granulocytes for short)
neutrophils
It has strong chemotactic and phagocytic functions like macrophages. After phagocytosis, it itself will die and turn into pus cells.
50-70%, the largest number
Curved rod-shaped or lobulated (2-5 leaves) with deeply stained nuclei
In severe bacterial infection of the body, new cells enter the blood from the bone marrow, and the number of cells in the rod-shaped nucleus and the 2-lobed nucleus increases, which is called left shift of the nucleus.
The number of cells in the 4-5 lobe nuclei is increased, which is called the nucleus shifting to the right, indicating dysfunction of bone marrow hematopoietic cells.
The cytoplasm is light pink and contains fine granules.
Light purple: Azure granules 20%
Lysosomes contain acid phosphatase myeloperoxidase and a variety of acid hydrolases (digest and phagocytose bacteria and foreign matter)
Light red: special particles 80%
Secretory granules containing lysozyme and phagocytosin
Phagocin, also known as defensin, has bactericidal effect
neutrophilic, many, small
basophils
Minimum quantity, 0.1%
The nucleus is lobed, S-shaped or irregular, and lightly colored.
The cytoplasm contains basophilic granules, which are unevenly distributed in size and stained blue-purple to cover the nucleus.
It is a secretory granule that contains heparin, histamine, neutrophil chemoattractant, eosinophil chemoattractant, etc., and can synthesize and secrete leukotrienes.
eosinophils
0.5-3%
The core is mostly two-lobed
Thick bright red eosinophilic granules
There are rectangular crystals in the intragranular matrix
is a special lysosome
Contains lysosomal enzymes, histamine enzymes, cationic proteins, aryl sulfatase
Cationic protein: kills parasites
Histamine breaks down histamine
Arylsulfatase inactivates leukotrienes
suppress allergic reactions
Chemotaxis
Moved to the site of allergic reaction by the action of eotaxin
Agranulocytosis (all contain small azurophilic granules)
monocytes
3-8%
The nucleus is kidney-shaped, horseshoe-shaped, twisted and folded, irregular, and the chromatin is fine and loose, so the coloring is light.
The cytoplasm is rich, weakly basophilic, gray-blue, and contains small lavender azurophilic granules, namely lysosomes
Lymphocytes
25-30%
Small and medium lymphocytes, many small, medium few, large lymphocytes not in the blood
The nuclei of small lymphocytes are round and large, with shallow concave on one side. The chromatin is dense and lumpy, and the coloring is dark.
Medium lymphocytes are lightly stained and nucleoli are visible
Cytoplasm is basophilic, blue
Produced in bone marrow, lymphoid organs, lymphoid tissue
Morphological characteristics and immune functions can be divided into three categories
Thymus-dependent lymphocytes (T cells)
Bone marrow-dependent lymphocytes (B cells)
Natural killer cells (NK cells)
platelets
Small pieces of cytoplasm shed by bone marrow macrophages
Biconvex disc shape, bulges protrude when stimulated, irregular shape
gather in groups
There are blue-purple platelet granules in the center, which is called the granular area; the peripheral part is homogeneous and light blue, which is called the transparent area.
The transparent area contains microtubules and microfilaments
There are special granules in the granule area, dense granules, and a small amount of lysosomes
Special particles are many and large, also called alpha particles, containing platelet factor IV, platelet-derived growth factor, and thrombospondin
Involved in hemostasis and coagulation
Plasma 55%
Equivalent to extracellular matrix
Water 90%
Others (plasma proteins: albumin, globulin, fibrinogen) lipoproteins, enzymes, hormones, inorganic salts
bone marrow structure
red bone marrow
yellow bone marrow
hematopoietic tissue
Reticular tissue, hematopoietic cells, stromal cells
Hematopoiesis-inducing microenvironment→hematopoietic cells
The core component is stromal cells
It acts as a hematopoietic scaffold, secretes a variety of hematopoietic growth factors, and regulates the proliferation and differentiation of hematopoietic cells.
Sinusoids
Immature red blood cells are located near the blood sinusoids, immature granulocytes are far away from the blood sinusoids, and megakaryocytes are often close to the sinusoidal endothelial space.
Capillaries with large lumens, irregular shapes, large intercellular spaces, and incomplete endothelial basement membrane are conducive to the entry of mature blood cells into the blood.
Hematopoietic stem cells and hematopoietic progenitor cells
Hematopoietic stem cells (pluripotent stem cells)
Strong proliferative potential
Multidirectional differentiation ability
Ability to self-replicate
Mouse spleen colony formation experiment confirmed
hematopoietic progenitor cells
erythroid hematopoietic progenitor cells
Granulocytomonocyte lineage hematopoietic progenitor cells
Megakaryocyte lineage hematopoietic progenitor cells