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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
M line
Center of the H band in a sarcomere
Macrophage
Phagocytic cell derived from monocytes
Macula adherens
Type of cell junction; important juction within epithelial tissue; desmosome
Macula densa
Specialized cells in the distal convoluted tubule; part of the juxtaglomerular apparatus
Macula pellucida
Stigma; site on the surface of the ovary where oocyte rupture occurs
Mall's space
Region in liver where lymph is formed
Malpighian corpuscle
1. Renal corpuscle
2. Splenic nodule
MALT
Mucosal associated lymphatic tissue
Martinotti cell
Type of nerve cell found in the cerebral cortex
Mast cells
Connective tissue cell with granules which contain heparin and histamine
Medulla
Inner portion of organ
Megakaryocyte
Giant cell found in the bone marrow; fragments form platelets
Meiosis
Process of nuclear division during the generation of sex cell which cuts the number of chromosomes in half
Meissner's corpuscle
Tactile receptors sensitive to light touch found in the dermis
Meissner's plexus
Submucosal plexus of the gastrointestinal tract
Melanin
Dark pigment formed by melanocytes
Melanocyte
Cells in the skin at the epidermal/dermal junction which produce melanin
Membrane bone
Bone which forms from direct deposit, as opposed to from a cartilagenous model
Memory cell
Lymphocyte that has been exposed to a specific antigen so that when re-exposed to that antigen it can recognize the antigen and rapidly divide
Merkel cell
Tactile receptor in the skin
Mesenchyme
Embryonic connective tissue
Mesangial cells
Cell type seen in the glomerulus; interstitial cells
Mesothelium
Type of epithelium which lines some internal body cavities
Metamyelocyte
Cell type in granulopoiesis
Metarteriole
Vessel which is in between arteriole and capillary
Microglia
Type of neuroglia; CNS macrophages
Microvilli
Projections on the apical surface of some epithelial cells which increase the surface area for absorpiton
Mitochondria
Cellular organelles which generates ATP; powerhouse of the cell
Mitosis
Nuclear division seen with cell division
Mixed glands
Glands which are composed of both serous cells and mucous cells
Monocyte
Agranular white blood cell; largest white blood cell
Mucosa
Mucous membrane; lining of passageways
Mucos connective tissue
Type of mesenchyme
Mucous neck cell
A type of mucous secreting cell found in the stomach
Mueller cell
Supporting cell in the retina
Multipolar cell
Cell with many processes
Muscle fiber
Muscle cell
Myelin
Fatty sheeth surrounding nerve cell processes
Myelocyte
Cell type seen in granulopoiesis
Myeloid
Cell line in the bone marrow
Myenteric plexus
Plexus that is between the two layers of external muscle in the GI tract; Auerbach's plexus
Myoepithelial cells
Embryologically from ectoderm; contactile cells
Myofibril
Longitudinal unit within a muscle fiber
Myosin
Contractile protein that is very prevalent in muscle
Nail bed
Structure that the nail plate rests on
Natural killer cell
Type of lymphocyte; NK cell
Nephron
The functional unit of the kidney which is composed of a glomerulus and a uriniferous tubule
Neurofilaments
Intermediate fibers of neurons
Neuroglia
Supporting cells of the central nervous system
Neurolemma
Outermost covering of nerve fiber; also spelled neurilemma
Neuron
Nerve cell
Neurosecretory cell
Neuron which secretes a hormone
Neutrophil
Type of white blood cell; granulocyte in which the granules show no particicular attraction for either acidic or basic dyes
Nissl bodies
Distinctive rough endoplasmic reticulum and ribosomes seen in neurons
Node of Ranvier
Area between two Schwann cells which is not covered by myelin
Nonlamellar bone
Immature bone; woven bone
Normoblast
Cell seen in erythropoiesis which has a compact nucleus
Nucleolus
Region in the nucleus of a cell where ribosomal RNA production occurs
Nucleus
Part of the cell which contains the genetic information
Histology hint from Sarah Bellham: If you are studying histology or involved in health care, you need a medical dictionary. You may as well get one as early in your career as possible to maximize the benefit. I recommend: Stedman's Medical Dictionary or Dorland's Illustrated Medical Dictionary, 30th Edition .
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