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Histology
Term | Features | Locations |
---|---|---|
Simple squamous epithelium | - thin & flat cells - flattened nuclei - single layer | - alveoli - endothelium - mesothelium |
Simple cuboidal epithelium | - height of cell is equal to width - rounded & central nuclei - single layer | - kidney tubules - covering of ovary - ducts of small glands |
Simple columnar epithelium | - height of cell is longer than width - elongated oval nuclei - single layer | - small intestine - uterus |
Pseudostratified ciliated columnar epithelium | - cilia - nuclei at different levels - cells appear stratified but are in a single layer | - trachea - nasal cavity - bronchi |
Stratified squamous non keratinized epithelium | - basal columnar cells - 3-4 layers of polyhedral cells - multilayered squamous cells | - oral cavity - pharynx - vagina |
Stratified squamous keratinized epithelium | - keratin - basal columnar cells - multilayered squamous cells | - skin - hard palate |
Transitional epithelium | - basal columnar cells - 3-4 layers pear shaped cells - topmost layer of umbrella shaped cells | - ureter - urinary bladder - prostate gland |
Serous salivary gland | - darkly stained - central rounded nuclei - serous acinar cells | - salivary gland - oral cavity - parotid gland |
Mucous salivary gland | - lightly stained - peripheral flat nuclei - mucous acinar cells | - salivary gland - back of papillae |
Loose areolar tissue (LCT) | - irregularly arranged fibers - fibroblast cells - contains collagen, elastin & reticular fiber | - between muscle fascicles - around muscles - surrounding of abdominal cavity |
Adipose tissue (LCT) | - adipocytes - peripheral nuclei - darkly stained cytoplasm | - subcutaneous fat layer - around internal organs - bone marrow |
Dense regular connective tissue (DCT) | - parallel fibers - elastic & collagen fibers - fibrocytes | - tendons - ligaments |
Elastic tissue (DCT) | - wavy elastic fibers - fibroblasts - collagen fibers | - aorta - heart - blood vessels |
Reticular tissue (LCT) | - lymphocytes - reticular fibers - irregular mesh pattern | - spleen - kidney - liver |
Hyaline cartilage (SCT) | - darkly stained chondrocytes - lightly stained chondroblasts - perichondrium | - joints - ribs - nasal septum |
Elastic cartilage (SCT) | - elastic fibers - chondrocytes - perichondrium | - epiglottis - larynx - external ear |
Fibrocartilage (SCT) | - chondrocytes - collagen - no perichondrium | - articular disks - intervertebral disks |
Compact bone (SCT) | - osteocytes - osteons - volkmann's canal | - long bone - bone marrow space |
Nerve | - perineurium - epineurium - myelin sheath | - brain - spinal cord |
Sympathetic ganglion | - multipolar - peripheral nuclei - satellite cells | |
Dorsal root ganglion | - psuedo-unipolar - lightly stained cell bodies - central nuclei | |
Skeletal muscle | - striated - peripheral nuclei - multiple nuclei | - limbs - tongue - eye |
Cardiac muscle | - striated - central nuclei - branched | - heart |
Smooth muscle | - nonstriated - central nuclei - spindle shaped cells | - small intestine - kidney - uterus |
Large artery | - tunica intima - tunica media - elastic fibers | - aorta - pulmonary trunk - common carotid |
Medium sized artery | - tunica intima (smooth muscle rich) - thick tunica media - wavy endothelium | - radial artery - femoral artery - splenic artery |
Large vein | - thin wall - thin tunica media - rich in smooth endothelium | - vena cava |
Thymus | - darkly stained cortex - lightly stained medulla - hassall's corpuscles | |
Spleen | - thin capsule - white pulp - red pulp | |
Tonsil | - stratified squamous nonkeratinized epithelium - serous gland - mucous gland | |
Lymph node | - darkly stained cortex - lightly stained medulla - subcapsular sinuses | - neck - armpits - abdomen |