hamburger encounters the olfactory cilia‚ located in the supporting olfactory epithelium. The cilia pass along the impulse of the odor thru the olfactory cell‚ then further onto the axon bundle‚ before passing through the cribriform plate. Upon leaving that boney structure‚ the signal hops a ride on the olfactory bulb. The bulb in turn feeds impulses on to the olfactory nerve. This nerve enters the brain and will cause the subject to understand the odor to be hamburger‚ of which he wants to eat. The
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this range‚ there is a system in body called the negative feedback system‚ which is where the systems attempt a normal body temperature. When temperatures go outside of this range in a particular place in the body‚ a stimulus to a receptor sends nerve impulses to a regulating centre in the brain. The brain sends an effector to the spot to
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3 parts of a nerve cell a. Dendrites b. Cell Body c. Axon 2. Types of nerves: a. Afferent Neurons=sensory‚ conduct impulses TO the brain b. Efferent Neurons=motor‚ conduct impulses AWAY from the brain c. Interneurons 3. Types of Cells in the CNS: a. Astrocytes b. Microglia c. Oligodendrocytes-form myelin sheath of CNS d. Schwann Cells-form myelin sheath of PNS 4. White matter vs. Gray matter 5. Myelin and its function 6. Nodes of Ranvier 7. Ganglion-clump of nerve cell bodies in
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into electrical nerve impulses. Structure of sensory receptors Dendrites of sensory neurons divided into: a) free nerve enedings-bare dencdrites thermal‚ pain etc. b) encapsulated nerve endings-dendrites enclosed in layer of connective tissue e.g. pressure. Specialised cells that monitor changes in the internal or external environment and synapse with sensory neuron‚ e.g. vision‚ hearing and taste. Neurons Conduct nerve impulses from one part of
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attaching a muscle indirectly to bones cartilages‚ or connective tissue coverings of each other Aponeurosis – sheet-like bundles of fibrous or membranous sheet connecting a muscle and the part it moves It has hundreds of muscle cells‚ blood vessels‚ nerve fibers and fascia. Actin major component in force production. Actin‚ when polymerized into filaments‚ forms the "ladder" along which the myosin filaments "climb" to generate motion. Myosin is a peptide that is responsible for force generation. It
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system Transmits impulses (up to 250 mph) Parts of a Neuron Dendrite – receive stimulus and carries it impulses toward the cell body Cell Body with nucleus – nucleus & most of cytoplasm Axon – fiber which carries impulses away from cell body Schwann Cells- cells which produce myelin or fat layer in the Peripheral Nervous System Myelin sheath – dense lipid layer which insulates the axon – makes the axon look gray Node of Ranvier – gaps or nodes in the myelin sheath Impulses travel from dendrite
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where the protagonist tries to fix the neurology nerve system to heal his father’s Alzheimer. #2 Ask Question What causes Alzheimer’s disease neurologically? #3 Create possible explanation I think the core reason of the Alzheimer’s disease lie on the nerve pathway signal transmission. I think the nerve pathway signal transmission system is same as all of the body functional system and as it grows older and older‚ the functioning of the specific nerve pathway signal transmission for memories weakens
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Worksheet 31 answers: 1. a) Nostril _ nasal cavity _ pharynx _ larynx _ trachea _ bronchi _ bronchioles b) The lungs are efficient for gaseous exchange because: • The lungs are made of numerous alveoli which provide a large surface area for gaseous exchange • The surfaces of the alveoli are moist for gases to dissolve • The alveolar wall is thin consisting of one layer of epithelial cells • Each alveolus is surrounded by numerous capillary network c) i) Because they have an anti-sticking
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receptor is responsible for activating a nerve impulse in a sensory neuron that responds to a change in the body’s internal and external environment. The sensory neuron conducts the impulse needed from the receptor to travel to its axonal end in the CNS. The center is the receiving area in which the incoming sensory impulse connects with an outgoing motor impulse‚ which helps with connecting and transmission. The motor neuron is responsible for transmitting the impulse to the proper body part. And finally
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example of a specialised animal cell could be of a nerve cell. The nerve cell contains axons of motor and sensory neurons‚ which are in bundles of fascicles. They are surrounded by connective tissue which is the sheath of perineurium which ensures that the cells do not get damaged. This lso helps do that the function of the cell is carried out correctly (Nerve Anatomy or Structure (Expanded View)‚ 2017). The function of a nerve cell is to emit impulses through electrical signals fromt the brain to the
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