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Images Dated 19th July 2008

Available as Framed Photos, Photos, Wall Art and Gift Items

Choose from 1,442 pictures in our Images Dated 19th July 2008 collection for your Wall Art or Photo Gift. Popular choices include Framed Photos, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


Coloured sagittal MRI scans of the human brain Featured 19 Jul 2008 Print

Coloured sagittal MRI scans of the human brain

Brain scans. Coloured magnetic resonanceimaging (MRI) scans through a human head showing ahealthy brain. These are sagittal (side view)sections. The largest part of the brain is thefolded cerebrum, which controls consciousthoughts. At the lower right of each scan is thesmaller, highly-folded cerebellum, which controlsbalance and posture. In some of the scans (at topright, for instance) the brainstem is seen (bottomcentre of brain), which links the brain to therest of the body through the spinal cord. MRI usesradio waves and a powerful magnet to provoketissues to emit signals depending on theircomposition. It is particularly useful forstudying nervous tissue

© Simon Fraser/Science Photo Library

Eye anatomy, SEM Featured 19 Jul 2008 Print

Eye anatomy, SEM

Eye anatomy. Coloured scanning electron micrograph (SEM) of part of the ciliary body (red/yellow) of the eye, a ring-shaped structure inside the eye, surrounding the iris. This view looks at part of the ciliary body (arching from upper left to lower right), as seen from inside the eye. Part of the iris is seen at lower left. Part of the choroid (outer layer of the eye) is at top right. The ciliary body joins to ligaments that hold the lens in place behind the iris. The lens has been removed here. The ciliary body also contains the ciliary muscle that is contracted to alter the curvature of the lens and focus light on the retina at the back of the eye. These structures are at the front of the eye

© Susumu Nishinaga/Science Photo Library

Nerve cells Featured 19 Jul 2008 Print

Nerve cells

Nerve cells. Fluorescent light micrograph of neurons (nerve cells, red) and glial cells (support cells, green). The glial cells have been stained to show glial-fibrillary acidic protein, a type of intermediate filament (IF). The neurons have been stained to show beta-tubulin, a protein that makes up microtubules. Neurons are responsible for passing information around the central nervous system (CNS) and from the CNS to the rest of the body. Each neuron comprises a cell body surrounded by numerous extensions called dendrites. Dendrites collect information from other neurons or from sensory cells. Each neuron also has one process called an axon, which passes information to other neurons, or to effector cells such as muscle fibres. Glial cells provide structural support for neurons and supply them with nutrients and oxygen

© Riccardo Cassiani-ingoni/Science Photo Library