FIELD I 

 Columns 35 and 36 



TISSUES. CELLS, AND FLUIDS 



1 Epithelium 



11 Simple squamous epithelium 



12 Endothelium {of blood vessels and heart) 



13 Mesothelium (of peritoneal, pericardial, and pleural cavities) 



14 Columnar epithelium 



15 Cuboidal epithelium (= low columnar epithelium) 



16 Glandular epithelium (= a modified columnar [or cuboidal] epithelium) 



17 Pseudostratified epithelium 



18 Ciliated epithelium (usually a type of pseudostratified epithelium) 



19 Stratified squamous epithelium 



Epidermis (= stratified squamous epithelium of the skin) (19). 

 (For plant epidermis, use Symbol 74. ) 



lA Stratified columnar epithelium 



IB Transitional epithelium 



IC Basement membrane of epithelial tissue 



ID Epithelial duct of the gland coded in Field H-1 (as contrasted to the "glandular" epithelium 

 of the gland. Symbol 16) 



2 Connective tissue, unspecified as to type 



21 Fibrillar connective tissue 



22 Areolar fibrillar connective tissue (= fibro-elastic) 



23 White fibrous connective tissue 



24 Elastic connective tissue (fibrillar connective tissue with preponderance of elastic fibers) 



25 Reticular connective tissue 



26 Adipose connective tissue (= fat tissue) 



27 Pulp of teeth (dental pulp) 



2A Fibroblast (cells forming connective tissue fibers) 



2B Histiocyte (= macrophage) 



20 Pigment cells of connective tissue 



3 Muscle tissue, unspecified; contractile tissue 



31 Skeletal muscle; striated muscle 



32 Smooth muscle; visceral muscle, unspecified as to whether the fibers are arranged as oblique, 



longitudinal, or circular muscle 



33 Longitudinal smooth muscle (fibers parallel to the longitudinal axis of the organ) 



34 Circular smooth muscle (fibers encircling the long axis of the organ) 



35 Oblique smooth muscle (fibers oblique to the long axis of the organ) 



36 Cardiac muscle 



4 Nervous tissue 



41 Sensory nerve fiber; afferent nerve fiber (supplying the organ coded in Field H-1) 



42 Motor nerve fiber; efferent nerve fiber (supplying the organ coded in Field H-1) 



43 Preganglionic fiber (of the nerve coded in Field H-1) 



44 Postganglionic fiber (of the nerve coded in Field H-1) 



45 Ganglion (of the nerve coded in Field H-1) 



46 White matter (= myelinated nervous tissue) of the central nervous system part coded in Field H-1 



47 Grey matter (= non-myelinated nervous tissue) of the central nervous system part coded in 



Field H-1 



48 Neuron; nerve cell 



49 Nerve cell body 



4A Axon (defined as a nerve cell process conducting impulses from the nerve cell body, regardless 

 of the physical structure of the process. By this definition, all motor nerve fibers are axons. ) 



4B Dendrite (defined as nerve cell process conducting impulses to the nerve cell body, regardless 

 of the physical structure of the process. By this definition, all sensory nerve fibers are 

 dendrites. ) 



4C Nerve fiber (= nerve cell process including any sheaths) 



4D Motor end plate 



4E Sensory ending 



4F Neuroglia 



111 



