Web7 apr. 2024 · Characteristics of Nervous Tissue. Nervous tissue compensates for nervous system CNS and PNS. Contains two different cells – neurons and glial cells. It consists of dendrites, ends of the cell body, axons, and nerves. The neurons secrete chemical neurotransmitters that stimulate other neurons as a result of stimuli. WebParts of the eye . Cornea: The cornea is the clear, outer part of the eye’s focusing system located at the front of the eye. Iris: The iris is the colored part of the eye that surrounds …
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WebThree major categories of neurons are recognized: Bipolar neurons are relatively rare. They are sensory neurons found in olfactory epithelium, the retina of the eye, and ganglia of the vestibulocochlear nerve. Unipolar (pseudo-unipolar) neurons are sensory neurons with cell bodies located in spinal and cranial nerve ganglia. WebOptic disc: the visible (when the eye is examined) portion of the optic nerve, also found on the retina. The optic disc identifies the start of the optic nerve where messages from cone and rod cells leave the eye via nerve fibres … nanberry black brother white pdf
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Web15 mrt. 2024 · Thin, transparent protective outer covering that prevents entry of microorganisms. Transparent part at front of eye that allows light to enter. It also causes … WebAndrea Auiles. The retina (pronounced RET-nuh), the third and innermost layer, lines the interior of the eyeball. The retina is a delicate, light-sensitive layer of nerve tissue in the neurological system. The optic nerve transports impulses from the retina to the brain, where they are interpreted as visual pictures. WebOptic nerve. A bundle of nerve fibers that connect the retina with the brain. The optic nerve carries signals of light, dark, and colors to a part of the brain called the visual cortex, which assembles the signals into images and … nanberry online book