Histology theory part 1 Flashcards
Hematoxilin
Basophilic, stains acidic purple
Eosin
Acidopilic, stains basic pink, cytoplasm
Layers of hyalin cartilage
Tangential, transitional, radial + calcificated cartilage, bone
Covers cartilage
Perichondirum, dense irregular connective tissue
Inside hyalin cartilage, derived from
chondrocytes, mesenchymal cells
Chondrocytes in clusters
Chondron (in lacunea)
The matrix inside the chondron is called, between is called
territorial matrix, interterritorial matrix.
Fibers in hyalin cartilage
Type 2, made by chondrocytes
Tendocytes are..
Fibrocytes in tendons
Fibrocytes are …
inactive fibroblasts
Are there perichondrium covering fibrocartilage?
No
Differences between hyalin cart. and fibrocart
Type 1 and 3, not 2. Less ground substance, hyalin stains more basophilic,
Endosteum
Seperates bone marrow and spicules
Red bone marrow is composed of
reticular cells and a network of reticular fibers, to suport the hematopoietic stem cells (give rise to blood cells), adipocytes, megakaryocytes
Megakaryocytes does…
platelets formation, (large cells, basophilic granules)
Type of epithelium in gall bladder
simple columnar (wall), simple cuboidal (extretory ducts)
When looking at pancreas we look for, stained
Blood vessels, capillaries, toluidine blue
Toludine blue stains
Carbohydrates
Layers in capillaries
- Tunica intima (endothelium)
- Tunica adventitia (pericyte)
We can find str. columnar. non-kera. epi?
Esophagus (HE)
Layers of str. columnar. non-kera. epi
P (stratum planocellulare)
S (stratum spinosum)
B (stratum basale)
Tissue surrounding adipocytes
small vessels, fibrocytes, reticular fibers
Brown adipocytes located, charactarized by, function
loose connective tissue surroing esophagus, mitochondra and fat droplets, thermogenic regulation
Cytoplasm of smooth muscle stained
eosinophilic
Stratum granulosum has protein..
Keratohyalin
Papillary layer
First layer of dermis, fibro-elastic connective tissue
Reticular layer
Second layer of dermis, dense irregular connective tissue
Reticular fibers collagen type, can be found in
type 3, liver, bone marrow, lymphatic system
Areolar connective tissue
Loose connective tissue, includes papillary and tissue underlying it
The cells of connective tissue include..
The cells of connective tissue include fibroblasts, adipocytes, macrophages, mast cells and leucocytes.
Four types of tissue
Nevous, connective, muscle and epithelium
Lower part of dermis
Dense irregular connective tissue
Tree types of glands
Holocrine, apocrine, merocrine
Sturucture of arteries
- tunica intima (endothelium + basement layer, subendothelium, internal elstic lamina)
- tunica media
- tunica adventitia
Verhoeff’s elastic stain contains
hematoxillin, ferric chloride and iodine.
PAS-H is…
Periodic Acid-‐Schiff +H
PAS-H stains
Stains the glycogen and other carbohydrates magenta. Collagen fibers pink. Nucleus blue.
Mucous acini is staind by PAS-H
Magenta (dark)
Serous acini is stain by PAS-H
Magneta (light)
Mucous acini is staind by HE
Pink (light)
Serous acini is stain by HE
Pink (dark)
Mixed sero-‐mucous units:
Demilune of gianuzzi
Tree parts of hair follicle
A central medulla, or core (not seen in fine hairs), keratinised cortex, highly keratinised (thin hard cuticle)
Mucoid tissue in the umbilical cord, composed of, surrouing it
Wharton’s jelly (mesenchyme), hydrated
glycosaminoglycans, small amount of collagen fibers and fibroblasts. Amniotic epithelial cells
