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- M2 proton channelThe Matrix-2 (M2) protein is a proton-selective viroporin, integral in the viral envelope
- Maceration (bone)Technique to obtain a clean skeleton
- MACPFThe Membrane Attack Complex/Perforin (MACPF) superfamily, sometimes referred to as the MAC
- Macrophage colony-stimulating factorThe colony stimulating factor 1 (CSF1), also known as macrophage colony-stimulating factor
- MaculaOval-shaped pigmented area near the center of the retina
- Macula densaRegion of the kidney containing juxtaglomerular apparatus
- Magnocellular cellType of neuron of the lateral geniculate nucleus of the thalamus
- Magnocellular neurosecretory cellLarge neuroendocrine cells of the hypothalamus
- Maintenance respirationAmount of cellular respiration needed for an organism to maintain itself
- Major duodenal papillaAnatomic feature in the intestines
- Major urinary proteinsProteins found in the urine and other secretions of many animals
- Malate dehydrogenaseClass of enzymes
- Malate dehydrogenase (NADP+)In enzymology, a malate dehydrogenase (NADP+) (EC 1.1.1.82) is an enzyme that catalyzes th
- Malate–aspartate shuttleBiochemical system for transporting electrons produced during glycolysis
- Male accessory glandSexual gland in males
- MalleolusAnkle bone protrusion
- MalleusBone of the middle ear
- Mammalian kidneyPaired organ in the urinary system of mammals
- Mammillary bodyPart of the limbic system
- Management of depressionTherapies, medications, and devices
- Management of multiple sclerosisApproaches to managing the disease
- Mandibular canalIn human anatomy, the mandibular canal is a canal within the mandible that contains the in
- Mandibular foramenOpening on the inner surface of the mandible
- Mandibular nerveBranch of the trigeminal nerve responsible for the lower face and jaw
- Mandibular notchThe mandibular notch, also known as the sigmoid notch, is a groove in the ramus of the man
- Mannan-binding lectinMammalian protein found in Homo sapiens
- Mannan-binding lectin-associated serine protease-2Protein found in humans
- Marginal artery of the colonIn human anatomy, the marginal artery of the colon, also known as the marginal artery of D
- Marginal-zone B cellType of immune cell
- Marihuana Tax Act of 1937The Marihuana Tax Act of 1937, Pub. L.Tooltip Public Law (United States) 75–238, 50 Stat.
- Maritime drug trafficking in Latin AmericaMaritime drug trafficking in Latin America is the primary means of transportation of illeg
- Mark JosephsonAmerican cardiologist and writer
- Marko GerbecMarko Gerbec (24 October 1658 – 9 March 1718; Latinized: Marcus Gerbezius) was a Carniolan
- MartinostatChemical compound
- Martinotti cellMartinotti cells are small multipolar neurons with short branching dendrites. They are sca
- MASP1Protein-coding gene in the species Homo sapiens
- Mass action principle (neuroscience)In neuroscience, the mass action principle suggests that the proportion of the brain that
- Masseter muscleOne of the masticatory muscles in mammals
- Masseteric nerveBranch of the mandibular nerve
- Mastoid part of the temporal boneBack part of the sides of the skull base
- Matrix (biology)Material or tissue between a eukaryotic organism's cells
- Matrix metalloproteinaseMatrix metalloproteinases (MMPs), also known as matrix metallopeptidases or matrixins, are
- Matthew Walker (scientist)British author, neuroscientist and psychologist
- Max Planck Institute for Medical ResearchThe Max Planck Institute for Medical Research in Heidelberg, Germany, is a facility of the
- Maxillary arteryArtery supplying face structures in humans
- Maxillary central incisorTooth
- Maxillary nerveBranch of the trigeminal nerve responsible for the mid-face
- Maxillary sinusLargest of the paranasal sinuses, and drains into the middle meatus of the nose
- Maxillary tuberosityAt the lower part of the infratemporal surface of the maxilla is a rounded eminence, the m
- May–Hegglin anomalyMedical condition
- MBL deficiencyHuman disease
- Mean arterial pressureAverage blood pressure in an individual during a single cardiac cycle
- MechanoreceptorSensory receptor cell responding to mechanical pressure or strain
- MechanosensationTransduction of mechanical stimuli into neural signals
- Mechanosensitive channelsType of membrane proteins
- MechanostatThe Mechanostat is a term describing the way in which mechanical loading influences bone s
- MechanotransductionConversion of mechanical stimulus of a cell into electrochemical activity
- Meckel's diverticulumBirth defect of a bulge in the small intestine
- Medial circumflex femoral arteryBlood vessel
- Medial collateral ligamentLigament on the inner side of the knee joint
- Medial compartment of thighThe medial compartment of thigh is one of the fascial compartments of the thigh and contai
- Medial condyle of femurThe medial condyle is one of the two projections on the lower extremity of femur, the othe
- Medial cutaneous nerve of armArm nerve
- Medial cutaneous nerve of forearmThe medial cutaneous nerve of the forearm (also known as the medial antebrachial cutaneous
- Medial dorsal nucleusLarge nucleus in the thalamus
- Medial epicondyle of the femurThe medial epicondyle of the femur is an epicondyle, a bony protrusion, located on the med
- Medial epicondyle of the humerusThe medial epicondyle of the humerus is an epicondyle of the humerus bone of the upper arm
- Medial forebrain bundleComplex group of fibers in the brain
- Medial geniculate nucleusSubnucleus of the thalamus in the brain
- Medial intermuscular septum of thighThe medial intermuscular septum of thigh is a fold of deep fascia in the thigh.
- Medial lemniscusAscending bundle of axons which cross in the brainstem
- Medial longitudinal fasciculusNerve tracts in the brainstem
- Medial meniscusCartilage formation in the human knee
- Medial palpebral ligamentThe medial palpebral ligament (medial canthal tendon) is a ligament of the face. It attach
- Medial patellofemoral ligamentLigament of the knee
- Medial pectoral nerveNerve of the human chest muscle
- Medial plantar arteryThe medial plantar artery (internal plantar artery), much smaller than the lateral plantar
- Medial plantar nerveThe medial plantar nerve (internal plantar nerve) is the larger of the two terminal divisi
- Medial pterygoid muscleMuscle involved in chewing
- Medial rectus muscleExtraocular muscle that rotates the eye medially
- Medial sural cutaneous nerveSensory nerve of the leg that supplies part of the medial side of the leg
- Median apertureStructure within the human brain
- Median cubital veinSuperficial vein of the upper limb
- Median eminenceBelow the hypothalamus of the brain
- Median nerveNerve of the upper limb
- Median sacral arteryThe median sacral artery (or middle sacral artery) is a small artery that arises posterior
- Median umbilical ligamentStructure in human anatomy
- MediastinumCentral part of the thoracic cavity
- Mediastinum testisThe mediastinum testis is a thick yet incomplete septum at the posterior part of the testi
- Medical illustrationCreating illustrations of biomedical subjects
- Medical optical imagingUse of light for medical investigation
- Medical Subject HeadingsControlled vocabulary for medical information
- Medium spiny neuronType of GABAergic neuron in the striatum
- Medullary cavityThe medullary cavity (medulla, innermost part) is the central cavity of bone shafts where
- Medullary laminae of thalamusMedullary laminae of thalamus are layers of myelinated fibres that appear on cross section
- Medullary pyramids (brainstem)White matter structures within the brainstem's medulla oblongata
- MegakaryoblastPrecursor cell to a promegakaryocyte in the bone marrow
- MegakaryocyteBone marrow cell which produces platelets
- Meibomian glandSebaceous glands along the rims of the eyelid
- MelanocyteMelanin-producing cells of the skin
- Melanocyte-stimulating hormoneFamily of peptide hormones and neuropeptides
- MelanopsinMammalian protein found in Homo sapiens
- Membrane channelMembrane channels are a family of biological membrane proteins which allow the passive mov
- Membranous urethraThe membranous urethra or intermediate part of male urethra is the shortest, least dilatab
- Memory and agingAspect of senescence
- Memory B cellCell of the adaptive immune system
- Memory consolidationCategory of memory stabilizing processes
- Memory erasureSelective artificial removal of memories or associations from the mind
- Memory errorError caused by a memory fault
- Memory inhibitionTerm in psychology
- Memory T cellSubset of T lymphocytes
- Meningeal branch of vagus nerveBranch of the vagus nerve
- Meningeal lymphatic vesselsNetwork of lymphatic vessels parallel to the sinuses
- Meningeal syphilisMedical condition
- Meniscus (anatomy)Fibrocartilaginous part of a bone joint
- Mental chronometryStudy of processing speed on cognitive tasks
- Mental foramenThe mental foramen is one of two foramina (openings) located on the anterior surface of th
- Mental health in IndiaMental healthcare in India is a right secured to every person in the country by law. India
- Mental nerveSensory nerve of the face
- Merkel cellReceptors in the skin of vertebrates
- Merkel nerve endingPressure receptor of the skin
- Mesangial cellSpecialised kidney cells
- Mesencephalic nucleus of trigeminal nerveSensory nucleus in the brainstem
- Mesenchymal–epithelial transitionReversible biological process
- MesenchymeType of animal embryonic connective tissue
- MesenteryContiguous fold of tissues that supports the intestines
- MesodermMiddle germ layer of embryonic development
- Mesolimbic pathwayBrain pathway
- Mesonephric ductPaired organ of the urogenital system in mammals
- MesonephrosPrincipal excretory organ during early human embryonic life
- MesotheliumMembrane lining body cavities
- Metabolic acidosisImbalance in the body's acid-base equilibrium
- Metabolic alkalosisAbnormally high tissue pH due to metabolic dysfunction
- Metabotropic glutamate receptorType of glutamate receptor
- Metabotropic receptorType of membrane receptor that acts through a second messenger
- Metacarpophalangeal jointBodily joint at the base of each finger
- MetalloproteinProtein that contains a metal ion cofactor
- MetaphysisThe metaphysis (pl.: metaphyses) is the neck portion of a long bone between the epiphysis
- MetaplasticityPsychological term
- MetencephalonPart of the embryonic brain
- MethemoglobinHemoglobin with ferric iron unable to carry oxygen
- Methoxy polyethylene glycol-epoetin betaTreatment of anemia associated with chronic kidney disease
- MethylglyoxalMethylglyoxal (MGO) is the organic compound with the formula CH3C(O)CHO. It is a reduced d
- Methylglyoxal pathwayGlycolysis offshoot in prokaryotes
- Michael I. MillerAmerican biomedical engineer and neuroscientist
- MicroalbuminuriaMedical condition
- MicrocirculationCirculation of the blood in the smallest blood vessels
- MicrocyteMedical condition
- Microelectrode arrayDevice in neurophysiology
- Microfold cellCell in gut capable of antigen uptake
- MicrogliaGlial cell located throughout the brain and spinal cord
- MicrosaccadeFixational eye movement
- MicroshockMicroshock refers to the risk that patients undergoing medical procedures involving extern
- MicrovillusMicrovilli (sg.: microvillus) are microscopic cellular membrane protrusions that increase
- Midbrain tegmentumPart of the midbrain
- Midcarpal jointJoint of the hand
- Middle cardiac veinThe middle cardiac vein commences at the apex of the heart. It passes posteriorly along th
- Middle cerebellar peduncleThe middle cerebellar peduncle (or brachium pontis) is one of three paired cerebellar pedu
- Middle cerebral arteryPaired artery that supplies blood to the cerebrum
- Middle colic arteryArtery supplying the colon
- Middle cranial fossaThe middle cranial fossa is formed by the sphenoid bones, and the temporal bones. It lodge
- Middle earPortion of the ear
- Middle genicular arteryThe middle genicular artery (azygos articular artery) is a small branch of the popliteal a
- Middle meningeal arteryArtery supplying the meninges
- Middle nasal conchaThe medial surface of the labyrinth of ethmoid consists of a thin lamella, which descends
- Middle-of-the-night insomniaMedical condition
- Migrating motor complexPhysiological phenomenon
- Mild cognitive impairmentNeurocognitive disorder
- Mildred Allen (soprano)Mildred Allen (October 26, 1929 – May 15, 2021) was an American operatic soprano who had a
- Military sexual traumaU.S. legal term for sexual assault or harassment during military service
- Mind & Life InstituteAmerican nonprofit organization
- Mind machineMeditation device
- Mind–body problemOpen question in philosophy of how abstract minds interact with physical bodies
- Minimaze procedureTypes of cardiac surgery procedures
- Minute ventilationMinute ventilation (or respiratory minute volume or minute volume) is the volume of gas in
- Mirror neuronType of neuron associated with empathy
- Mismatch negativityComponent in a sequence of stimuli
- Mitochondria associated membranesCellular structure
- Mitochondrial matrixSpace within the inner membrane of the mitochondrion
- Mitochondrial permeability transition poreProtein pore formed in mitochondria under pathological conditions
- Mitochondrial ribosomeThe mitochondrial ribosome, or mitoribosome, is a protein complex that is active in mitoch
- Mitochondrial trifunctional proteinMitochondrial trifunctional protein (MTP) is a protein attached to the inner mitochondrial
- Mitral cellMitral cells are neurons that are part of the olfactory system. They are located in the ol
- Mixing studyType of blood plasma screening test
- MNS antigen systemHuman blood group classification
- ModafinilWakefulness-promoting medication
- Models of consciousnessAspect of consciousness research
- Models of neural computationModels of neural computation are attempts to elucidate, in an abstract and mathematical fa
- Molecular cellular cognitionBranch of neuroscience
- Molecular neuroscienceBranch of neuroscience
- Momsen lungRebreather system for escaping sunken submarines
- Monoamine neurotransmitterMonoamine that acts as a neurotransmitter or neuromodulator
- Monoamine oxidaseFamily of enzymes
- Monoamine oxidase BProtein-coding gene in the species Homo sapiens
- Monoamine transporterProteins that function as integral plasma-membrane transporters
- MonoaminergicMonoaminergic means "working on monoamine neurotransmitters", which include serotonin, dop
- MonocyteSubtype of leukocytes
- Mononuclear phagocyte systemPart of the immune system
- Moro reflexInfantile reflex in response to loss of support
- MorphogenesisBiological process that causes an organism to develop its shape
- Morphogenetic fieldIn the developmental biology of the early twentieth century, a morphogenetic field is a re
- Mossy fiber (hippocampus)Pathway in the hippocampus
- Motivational salienceCognitive process
- Motor controlRegulation of movement within organisms possessing a nervous system
- Motor coordinationDirected movement of body parts to accomplish an action
- Motor nerveNerve exiting the central nervous system
- Motor neuron diseasesGroup of neurological disorders affecting motor neurons
- Motor pool (neuroscience)Group of motor neurons that innervate a muscle
- Motor systemCentral and peripheral structures in the nervous system that support motor functions
- Motor unitCombination of a motor neuron and all muscle fibers it innervates
- Motor unit plasticityThe motor unit consists of a voluntary alpha motoneuron and all of the collective muscle f
- Motor unit recruitmentAdditional activation of motor units to increase contractile strength
- Mouse Genome InformaticsFree, online database and bioinformatics resource
- MTORMammalian protein found in humans
- Mu hemoglobinMu hemoglobin is a predicted protein encoded in the HBM gene. The mRNA is expressed at mod
- Mu waveElectrical activity in the part of the brain controlling voluntary movement
- Mu-opioid receptorClass of opioid receptors found in humans
- Mucin 2Mucin 2, oligomeric mucus gel-forming, also known as MUC2, is a protein that in humans is
- Mucin 5ACMucin-5AC (MUC-5AC) is a protein that is encoded by the MUC5AC gene in humans.
- Mucosa-associated lymphoid tissueDiffuse system of lymphoid tissue
- Mucosal immunologyMucosal immunology is the study of immune system responses that occur at mucosal membranes
- Mucous membraneProtective layer that lines the interior of hollow organs
- Multifocal atrial tachycardiaFast heart rhythm associated with exacerbations of COPD
- Multipolar neuronA multipolar neuron is a type of neuron that possesses a single axon and many dendrites (a
- Multisensory integrationStudy of senses and nervous system
- Muscarinic acetylcholine receptorAcetylcholine receptors named for their selective binding of muscarine
- Muscarinic acetylcholine receptor M2The muscarinic acetylcholine receptor M2, also known as the cholinergic receptor, muscarin
- Muscle fascicleA muscle fascicle is a bundle of skeletal muscle fibers surrounded by perimysium, a type o
- Muscle fatigueInitially normal, then declining ability of a muscle to generate force
- Muscles of masticationMuscles that aid chewing
- Muscles of respirationMuscles involved in breathing
- Muscles of the hipIn human anatomy, the muscles of the hip joint are those muscles that cause movement in th
- Muscularis mucosaeThe muscularis mucosae (or lamina muscularis mucosae) is a thin layer (lamina) of muscle o
- Mushroom bodiesPair of structures in the brains of some arthropods and annelids
- Music-specific disordersDisorders relating to the perception of music
- Myasthenia gravisAutoimmune disease resulting in skeletal muscle weakness
- MydriasisExcessive dilation of the pupil
- MyelinationFormation of myelin sheaths in the nervous system
- MyeloblastUnipotent stem cell in the bone marrow
- Myeloid tissueTissue of bone marrow
- Myenteric plexusPart of the enteric nervous system
- Mylohyoid muscleThe mylohyoid muscle or diaphragma oris is a paired muscle of the neck. It runs from the m
- Myocardial contractilityHeart muscle's ability to contract
- MyofibrilContractile element of muscle
- Myogenic mechanismAutoregulation of arteries and arterioles
- MyoglobinuriaPresence of myoglobin in the urine
- MyokineClass of proteins produced by muscle
- MyomereBlocks of skeletal muscle tissue in aquatic chordates
- Myosin headPart of myofilaments
- Myosin light-chain kinaseMyosin light-chain kinase also known as MYLK or MLCK is a serine/threonine-specific protei
- MyotomeGroup of tissues
