Infinite photos and videos for every Wiki article · Find something interesting to watch in seconds
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Functional parts of the rods and cones, which are two of the three types of photosensitive cells in the retina
Illustration of the distribution of cone cells in the fovea of an individual with normal color vision (left), and a color blind (protanopic) retina. N
Illustration of the distribution of cone cells in the fovea of an individual with normal color vision (left), and a color blind (protanopic) retina. Note that the center of the fovea holds very few blue-sensitive cones.
The absorption of light leads to an isomeric change in the retinal molecule.
The absorption of light leads to an isomeric change in the retinal molecule.
Image: Rod&Cone
Image: Rod&Cone
Brain
The brain of a chimpanzee
Cross section of the olfactory bulb of a rat, stained in two different ways at the same time: one stain shows neuron cell bodies, the other shows rece
Cross section of the olfactory bulb of a rat, stained in two different ways at the same time: one stain shows neuron cell bodies, the other shows receptors for the neurotransmitter GABA.
Neurons generate electrical signals that travel along their axons. When a pulse of electricity reaches a junction called a synapse, it causes a neurot
Neurons generate electrical signals that travel along their axons. When a pulse of electricity reaches a junction called a synapse, it causes a neurotransmitter chemical to be released, which binds to receptors on other cells and thereby alters their electrical activity.
Fruit flies (Drosophila) have been extensively studied to gain insight into the role of genes in brain development.
Fruit flies (Drosophila) have been extensively studied to gain insight into the role of genes in brain development.