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Exam (elaborations)

Grcc Bi 121 Lecture Exam 4 Final (Periard) Questions With Correct Answers

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GRCC BI 121 LECTURE EXAM 4 FINAL (PERIARD) QUESTIONS WITH CORRECT ANSWERS

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articular cartilage of synovial joint


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hyaline cartilage covers, but doesn't join articular surfaces;
reduces friction, absorbs shock




Muscular hypertrophy


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, increase in size of muscle fiber due to increased production of myofibrils




What is it called when cell bodies are found in aggregates in the CNS?


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nucleus




Cations


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positively charged ions




sympathetic division


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excitatory "fight or flight"




Calcitonin


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, Lowers blood calcium levels (thyroid gland)




Chromatin


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Loosely coiled DNA (cells not dividing)




Neutron


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A subatomic particle that has no charge and that is found in the nucleus of
an atom




What are meninges and what is their function?


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layer of tissue that protects spinal cord




What are graded potentials and where do they occur in a neuron?


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, variable-strength electrical signals that travel over short distances and lose
strength as they travel away from source. Occur in dendrites, cell bodies
and synaptic terminals




What are myelin sheaths?


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axon coverings




Which molecule stores most of the glucose in muscle fibers?


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glycogen




serous membranes


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line body cavities and cover organs within cavities




What is it called when axons or dendrites are bundled together within the PNS


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