Search Results for: neurotransmitter
Inhibitory postsynaptic potential
Inhibitory Postsynaptic Potential Definition An inhibitory postsynaptic potential is a type of synaptic potential. It is... Read More
Neural Control Mechanisms
Nerve cells called neurons generate electric signals that pass from one end of the cell to another and release chemical... Read More
Axon hillock
Axon Hillock Definition What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More
Axon terminal
An axon terminal is any of the button-like endings of axons through which axons make synaptic contacts with other nerve... Read More
Phenylalanine
phenylalanine (Science: amino acid) One of the amino acids which the body cannot manufacture itself, but must acquire from... Read More
Consciousness and Behavior
States of Consciousness Defined either by (1) behavior - ranging from attentive and alert to coma and (2) electrical... Read More
Muscular system
Muscular System Definition What is the muscular system? The muscular system is a system that includes muscle cells and... Read More
Homeostatic Mechanisms and Cellular Communication
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory... Read More
Cell signaling
Definition noun The process of communication occurring between the cells and within the cell Supplement Cell signaling is... Read More
Efferent neuron
Definition noun, plural: efferent neurons A neuron with an axon that carries nerve impulses peripherally, and innervates... Read More
The biology of how the brain forgets
Our brain tends to forget things that we wish we would always remember. And yet, it cannot forget certain things we wish... Read More
Plant sets off “SOS” for plant defense when it gets hurt
When herbivore, such as an insect, nibbles a plant leaf, the plant sets off an "SOS" or distress signal as one of the... Read More
Autocrine signaling
Autocrine Signaling Definition What is autocrine signaling? Autocrine signaling is a type of cell signaling wherein a cell... Read More
Neuromuscular junction
Definition noun A chemical synapse between a motoneuron and a muscle fiber, through which a signal is transmitted that... Read More
Sarcolemma
Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More
Endoplasmic reticulum
Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... Read More
Parasympathetic nervous system
Definition noun A division of the (vertebrate) autonomic nervous system whose physiological effects are mostly in opposition... Read More
Ligand gated ion channels
Ligand gated ion channel a transmembrane ion channel whose permeability is increased by the binding of a specific ligand,... Read More
Neurohormone
Definition noun, plural: neurohormones Any of the various hormones secreted by neuroendocrine cells Supplement A... Read More
Presynaptic cell
presynaptic cell (Science: physiology) In a chemical synapse, the cell that releases neurotransmitter that will stimulate... Read More
Postsynaptic cell
postsynaptic cell In a chemical synapse, the cell that receives a signal (binds neurotransmitter) from the presynaptic cell... Read More
Nucleoside
Nucleoside Definition A nucleoside is a nitrogenous base (purine or pyrimidine) bound to a pentose sugar ribose or... Read More
Sympathetic nervous system
Definition noun A division of the (vertebrate) autonomic nervous system that is chiefly involved in producing an immediate... Read More
FAAH-OUT mutation for a life of no pain – No FAAH, no pain
A Scottish woman claims that she has not experienced pain over some supposedly painful conditions, like a severe joint... Read More