Ви повинні увійти в систему, щоб мати доступ до кошика
Illustration of the visual cortex, the areas of the brain that process visual sensation. Shown are the visual pathways through the brain, from the retinas in the eyes, optic nerves, optic chiasma, to the visual cortex of the occipital lobes of the brain (cut away to expose the internal structures).
Illustration of normal human wrist tendons, showing the extensor (top) and flexor (bottom) tendons. Also shown is the carpal tunnel, formed by the carpal bones and transverse carpal ligament, through which the flexor tendons run. The carpal tunnel is an area often affected by repetetive stress injury (carpal tunnel syndrome).
Illustration showing layers of skin, highlighting the epidermis (cutaway section), which includes the corneal layer, the living layer of keratinocytes, and the basal layer. The dermis, subcutaneous tissue, and other structures are also shown, including hair, hair follicles, skin cells, melanocytes, capillaries, and fat.
Illustration of pain pathways. Stimulation of pain receptors in the skin sends a pain impulse traveling up a sensory nerve to the dorsal root ganglion (spinal ganglion) of the spinal cord; the impulse crosses over to the spinothalamic tract and the reticular formation, then through the thalamus to the sensory cortex of the brain.