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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The endocrine system The endocrine system is a collection of ductless glands which are positioned through the whole body. The endocrine glands pass their secretions of hormones directly into the blood stream so that they are always adjacent to blood vessels. Hormones are chemicals in the body produced and secreted in the body that regulate the function of a particular tissue or organ (Bing dictionary). These chemical messengers transfer information from one set of cells to another. Despite many
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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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the membrane window of the cochlear and makes the fluid in the cochlear interchange. The fluid movement than generates a response in the hearing nerve‚ therefore creating sound. Diagram of the human ear: 5‚ Cochlear implants replace the function of the damaged parts of the ear. Signals made by the implant are sent directly via the auditory nerve to the brain‚ which recognises the signals commonly known as sound. 6‚ Light rays enter the eye through the cornea. The cornea’s refractive power
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plexus→ Hypogastric nerve (Postganglionic motor fibres) → UB Parasympathetic: Lateral horn cells of S2-S4 segments of spinal cord (Preganglionic motor fibres) → Form pelvic splanchnic nerve→ Synapse with the cell bodies of postganglionic motor fibres situated close to or within the bladder wall→ UB Somatic nervous systems: Anterior horn cells (Onuf’s nucleus) of S2-S4 segments of spinal cord→ Pudendal nerve Storage phase: Low-frequency (as stretch is low) afferent impulse from the stress receptor
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sensors to modulators or from modulators to effectors (nerves) (3) modulators: interpret sensory information and send information to effectors (brain‚ spinal cord) (4) effectors: part of the body that responds because of information from a modulator (muscles‚ glands) The Human Nervous System Two main components of the human nervous system: (1) central nervous system (CNS): the brain and spinal cord (2) peripheral nervous system (PNS): the nerves that enter and leave the brain and spinal cord CNS 6
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