Nervous Cell Tapestries

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Nerve cell culture. Coloured scanning electron micrograph (SEM) of new growth from a cultured sample from a spinal cord. The numerous branching strands are neurites, processes growing out of the nerve cell body (not seen). These connect to other neurites from other nerve cells, forming a network of nervous tissue. A neurite is either an axon or a dendrite, the former transmitting nerve impulses away from the nerve cell body, while the latter transmits nerve impulses towards the nerve cell body. Research into curing spinal paralysis, uses nerve tissue cultures to investigate methods of promoting neurite growth and neural regeneration. Magnification unknown.

Anatomy, of a typical, human, neuron, Neuron, watercolor, central nervous system, nerve cell, neurology art, anatomy

Anatomy, of a typical, human, neuron, Neuron, watercolor, central nervous system, nerve cell, neurology art, anatomy

Nerve cell. Abstract computer artwork of a nerve cell, or neuron. Neurons are responsible for passing information around the central nervous system (CNS) and from the CNS to the rest of the body. Each nerve cell comprises a body surrounded by numerous extensions called dendrites. Dendrites collect information from other nerve cells or from sensory cells. Each neuron also has one process called an axon, which passes information to other nerve cells, or to effector cells such as muscle fibres.

Anatomy, of a typical, human, neuron, Neuron, watercolor, central nervous system, nerve cell, neurology art, anatomy

Neural progenitor cell differentiation. Fluorescence light micrograph of neural progenitor cells that have been grown in a medium that is selective for astrocytes for three weeks. Neural progenitor cells are able to differentiate into neurons (nerve cells) or support cells (glial cells), which include astrocytes. Astrocytes have been stained orange and neural progenitor cells green. Cell nuclei are blue. Neural progenitor cells are a potential source of cells to replace damaged or lost brain cells.

Retina layers, coloured scanning electron micrograph (SEM). The retina is found on the inside of the eyeball and is formed from a number of layers. The light-detecting part is formed of rod and cone photoreceptor cells. The lower third of this image contains the blood vessels and nerves that form the upper layer. The light entering the eyes has to penetrate through this layer to reach the tightly packed photosensitive 'outer segments' of the photoreceptors (top third of image) which lie just below a layer of retinal pigment epithelium cells (top). Magnification: x480 when printed at 10 centimetres across.

Hippocampus brain tissue. Light micrograph of a sagittal (side view) section through the hippocampus of a rat's brain showing the nerve cells within it. The hippocampus is a structure of the limbic system of the brain. There is a hippocampus in each cerebral hemisphere, and they are thought to be responsible for spatial awareness and the formation of memories. Different structures have been stained different colours: the nuclei of cells are orange and neurofilaments are blue. Neurofilaments are proteins found in the axons (output processes) of nerve cells.

Neuron (pyramidal nerve cell) growing on the surface of an astrocytic neuroglial cell (culture), coloured scanning electron micrograph (SEM). Neurons are (also known as nerve cells) are cells of the nervous system that are specialized to carry messages through an electrochemical process. They have special cells called astrocytes (also known as astroglia) that are a type of neuroglial cell that provides support functions in the central nervous tissue and spinal cord. They perform a variety of tasks, from axon guidance and synaptic support, to the control of the blood brain barrier and blood flow. Magnification: x825 when shortest axis printed at 25 millimetres.

Peripheral nerve. Light micrograph of a section through non-myelinated nerve fibres (axons) aggregated to form a peripheral nerve with a sinusoidal or wave-like organization. This pattern reflects the capacity of the whole nerve bundle to be somewhat flexible and deformable and turn in its course through the supporting connective tissue (epineurium, stained blue). Nuclei associated with the nerve fibres are Schwann cells and fibroblasts. Magnification: x83 when printed at 10 centimetres across.

Brain synapses. Coloured transmission electron micrograph (TEM) of a section through brain tissue showing a number of synapses. A synapse is a junction between two nerve cells. At a synapse an electrical signal is transmitted from one cell to the next in only one direction. When the signal reaches a synapse it triggers the release of neurotransmitter chemicals from synaptic vesicles (red) at the end of the presynaptic cell. The neurotransmitters cross a microscopic gap and bind to receptors on the post-synaptic cell, triggering an impulse in that cell. Magnification: 30,000 when printed 10 centimetres wide.

Neural network. Computer artwork of a brain in top view, with the brain's neural network represented by lines and flashes. A neural network is made up of nerve cells (neurons).

Neural network. Computer artwork of a brain in side view, with the brain's neural network represented by lines and flashes. A neural network is made up of nerve cells (neurons).

Hand-drawn labeled cute neuron synapse. Perfect for health professionals, students, or just people who love medical designs. Grab this as a gift for your girlfriend, boyfriend, sister, or brother.

Neural network, computer artwork.

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Nerve cells. Light micrograph of nerve cells (neurones) from the cerebral cortex of the brain. These cells are from the hippocampus, part of the cerebral cortex concerned with memory. The hippocampus is rich in pyramidal cells such as these, which have numerous dendrites (right) trailing from one end of their cell body (dark areas) and one axon projecting from the other (left). Dendrites form junctions communicating with other cells, and signals are then relayed through the cell's axon.

Nerve synapse. Computer artwork of a junction, or synapse, between two nerve cells (neurons, blue). As the electrical signal reaches the presynaptic end of a neuron it triggers the release of neurotransmitters like serotonin across the gap, or synaptic cleft, between the two cells. The neurotransmitters bind to receptors on the postsynaptic membrane, changing the membrane's excitability and triggering an electrical impulse. Each neuron consists of a central cell body with many dendrites branching from it.

Prion disease treatment. Artwork of three pyramidal neurons (nerve cells). The cell at left is healthy. The cell at back has died because of a prion (pink) infection. The cell at right is infected with prions and has been treated with a PERK inhibitor drug (yellow). Prions are abnormal proteins that cause a group of fatal neurodegenerative diseases including BSE in cows and CJD in humans. Abnormal infectious prions directly change normal prions found in the brain to the abnormal form and prevent the synthesis of essential proteins. This leads to neuronal death. PERK inhibitors allow normal protein synthesis to continue, preventing neurodegeneration. Such drugs also have the potential to treat Alzheimer's disease and Parkinson's disease.

Brain cells. Fluorescence light micrograph of a section through brain tissue, showing numerous glial cells and neurons (nerve cells). Glial cells, or neuroglia, are non-neural cells of the central nervous system (CNS, brain and spinal cord). They are the predominant cell type in brain tissue and are thought to outnumber neurons by 10 to 1. Their precise roles remain to be well understood. Glial cells provide physical and functional support to neurons and participate in maintenance of the blood-brain barrier by attachments to blood vessels (as seen here).

Abstract computer illustration of nerve cells, or neurons. Neurons are responsible for passing information around the central nervous system (CNS) and from the CNS to the rest of the body. Each nerve cell comprises a body surrounded by numerous extensions called dendrites. Dendrites collect information from other nerve cells or from sensory cells. Each neuron also has one process called an axon, which passes information to other nerve cells, or to effector cells such as muscle fibres.

Action of selective serotonin reuptake inhibitors (SSRIs) at a chemical synapse, computer artwork. SSRIs are antidepressants that regulate levels of serotonin (the neurotransmitter that controls our moods) within the nervous system. Chemical synapses are the junctions between any two nerves. The drugs (pink) work at the synapses to block the reuptake of serotonin (orange beads) to the presynaptic cell (top). This increases the amount available to the postsynaptic cell downstream (bottom).

Neuron Synapse Anatomical Structure. Excellent concept for Students, Medical students, Neurologists, Doctors, Scientists, Biologists, PhD ...

Neuron Synapse Anatomical Structure. Excellent concept for Students, Medical students, Neurologists, Doctors, Scientists, Biologists, PhD ...