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Describe the pathway of descending motor commands from the cortex to the skeletal muscles. Compare different descending pathways, both by structure and function. Explain the initiation of movement from the neurological connections. Describe several reflex arcs and their functional roles.
There are 12 major anatomy systems: Skeletal, Muscular, Cardiovascular, Digestive, Endocrine, Nervous, Respiratory, Immune/Lymphatic, Urinary, Female Reproductive, Male Reproductive, Integumentary. Select a system below to get started.
Sensory (also called afferent) neurons carry nerve impulses from sensory receptors in tissues and organs to the central nervous system. They change physical stimuli such as touch, light, and sound into nerve impulses.
Each of the special senses has its own unique sensory cells---such as rods and cones in the retina to detect light for the sense of vision. Functionally, there are 6 major classes of receptors: mechanoreceptors, nociceptors, photoreceptors, chemoreceptors, osmoreceptors, and thermoreceptors.
20 lut 2024 · The brain consists of billions of neurons (nerve cells) that communicate through intricate networks. The primary functions of the brain include processing sensory information, regulating bodily functions, forming thoughts and emotions, and storing memories.
2 lut 2023 · While they have the common features of a typical cell, they are structurally and functionally unique from other cells in many ways. All neurons have three main parts: 1) dendrites , 2) cell body or soma , and 3) axons.
18 paź 2022 · Classification of spinal interneurons as first-, second-, third-, or last-order interneurons. The diagram illustrates a monosynaptic reflex arc from muscle spindle group Ia afferents, disynaptic reflex arc from muscle spindle group II afferents (via interneuron A), and reflex arcs from skin afferents via interneurons B and A or C, B, and A.
