Microscopic anatomy
Connective Tissue
Few cells, lots of matrix: it holds the body together. Each sheet shows the tissue three times, from the layers to the one feature that gives it away, with a real slide in the corner and the answers on the next page.
Connective Tissue Proper · Loose Connective Tissue
Loose (Areolar) Connective Tissue
The packing tissue under every epithelium, where the immune system patrols.
3 pages · 10 colours · A4 · Letter
LightDarkWhite Adipose Tissue
Each cell is one big droplet of fat with a thin rim of cytoplasm and a flattened nucleus pushed to one side.
3 pages · 10 colours · A4 · Letter
LightDarkBrown Adipose Tissue
Fat that burns itself to make heat.
3 pages · 10 colours · A4 · Letter
LightDarkReticular Connective Tissue
A fine net of type III collagen that holds blood and immune cells in place.
3 pages · 10 colours · A4 · Letter
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Connective Tissue Proper · Dense Connective Tissue
Dense Irregular Connective Tissue
Thick collagen bundles running every way: strong whichever way you pull.
3 pages · 10 colours · A4 · Letter
LightDarkDense Regular Connective Tissue
Collagen lined up in one direction, like the strands of a rope: tendons and ligaments.
3 pages · 10 colours · A4 · Letter
LightDarkElastic Connective Tissue
Dozens of elastic sheets that stretch with every heartbeat and spring back between beats.
3 pages · 10 colours · A4 · Letter
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Fluid Connective Tissue · Blood
Blood Smear
A connective tissue with a liquid matrix: plasma carrying cells.
3 pages · 10 colours · A4 · Letter
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Haematopoietic And Lymphoid Tissue · Primary Lymphoid Organs
Thymus
The school where T cells learn to tell self from foreign.
3 pages · 10 colours · A4 · Letter
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Haematopoietic And Lymphoid Tissue · Secondary Lymphoid Organs
Lymph Node
A filter on the lymph: every drop passes the immune cells inside it.
3 pages · 10 colours · A4 · Letter
LightDarkPeyer's Patches (Ileum)
Clusters of lymphoid follicles in the wall of the ileum, sampling what you eat.
3 pages · 10 colours · A4 · Letter
LightDarkPalatine Tonsil
Lymphoid tissue under a surface of stratified squamous epithelium that dips into deep crypts.
3 pages · 10 colours · A4 · Letter
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Supportive Connective Tissue · Cartilage
Hyaline Cartilage
Glassy, smooth and firm: the cartilage of joints, ribs, airways and the growing skeleton.
3 pages · 10 colours · A4 · Letter
LightDarkElastic Cartilage
Cartilage with a net of elastic fibres: it bends and snaps back.
3 pages · 10 colours · A4 · Letter
LightDarkFibrocartilage
Half cartilage, half tendon: built to take pressure and pulling at once.
3 pages · 10 colours · A4 · Letter
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Supportive Connective Tissue · Bone
Compact Bone
Bone built from osteons: tiny tree rings around a blood vessel.
3 pages · 10 colours · A4 · Letter
LightDarkSpongy Bone
A light lattice of bony struts, lined up with the forces the bone feels, with marrow in between.
3 pages · 10 colours · A4 · Letter
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Drawn slides generated by WalexLabs (Disseco) from published cell sizes. Real slides: GTEx via NCI Imaging Data Commons (CC BY 4.0) and Wikimedia Commons (CC0 / CC BY / public domain), credited on every sheet.