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Questions and Answers
What is the shape of a skeletal muscle cell or fiber?
What is the structure shown in the cross-section diagram?
What is the term for the entire muscle?
What is the name of the part of the muscle cell shown in the diagram?
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What is the function of the muscle bundle?
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What is the term for the muscle cell's shape?
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What is the name of the diagram shown?
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What is the characteristic of the muscle fiber?
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What is the function of Schwann cells?
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What is the diameter range of Type A fibers?
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What is the velocity range of impulse conduction in Type A fibers?
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What type of nerve fibers are myelinated?
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What is the function of myelin?
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What type of cells form myelin?
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What is the location of Schwann cells?
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What is the role of Schwann cells in impulse conduction?
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What is the relationship between myelin and impulse conduction velocity?
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What is the primary function of Type A fibers?
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What is the layer of connective tissue that surrounds the entire nerve?
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What is the function of the perineurium?
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What type of tissue fills the space between individual nerve fibers?
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What is the function of neuroglia?
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What is the approximate ratio of neuroglia to neurons in CNS tissue?
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What percentage of the total volume of nerve tissue do neuroglia occupy?
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What is the function of intraneural blood vessels?
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Where do the capillaries arise from in the nerve?
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Where are some autonomic ganglia embedded?
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What is essential for neural activity and its control?
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What is one key to understanding the function of a neuron?
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What do neurons use to communicate with other neurons?
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How do neurons react to neurotransmitters released by other neurons?
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What type of ganglia are found in the GIT and bladder?
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What is important for understanding the function of a neuron?
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Where do neurons release neurotransmitters?
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What is the characteristic of a bipolar neuron?
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Where are bipolar neurons commonly found?
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What is the function of receptor neurons?
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What type of neurons are present in the olfactory mucosa?
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What is the characteristic of a neuron with multiple dendrites and axons?
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What is the function of axons in bipolar neurons?
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What is the origin of axon in a bipolar neuron?
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What type of neurons are present in the retina?
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What is the function of receptor neurons in the inner ear?
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What is the characteristic of a neuron with a single dendrite and no axon?
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Study Notes
Neurons
- Bipolar neurons have a single dendrite that arises opposite the origin of the axon and are found in olfactory mucosa, retina, and inner ear as receptor neurons for sensation.
Peripheral Nerve Fibers
- Type A fibers (myelinated) are 4-20 μm in diameter and conduct impulses at high velocities (15-120 m/second).
- The entire nerve is surrounded by a thick layer of dense connective tissue called epineurium.
- Nerve fibers are grouped into distinct bundles, surrounded by a layer of connective tissue called perineurium.
- The space between individual nerve fibers is filled with loose connective tissue called endoneurium, containing fibrocytes, macrophages, and mast cells.
- Nerves are richly supplied by intraneural blood vessels that form numerous anastomoses.
Neuroglia (Gliacells)
- CNS tissue contains several types of non-neuronal, supporting cells called neuroglia.
- There are at least 10 neuroglia for every neuron, occupying about 50% of the total volume of nerve tissue.
- Neurons cannot exist or develop without neuroglia.
Skeletal Muscle Cells (Fibers)
- Muscle fibers are long and cylindrical in shape.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of visual perception and optical illusions with this quiz. Questions cover topics such as visual change, edge detection, and more. Assess your knowledge of how our brains process visual information.
