Marian University BIO 225 Lecture Exam 3 Questions With Complete Solutions
Spinal cord and attached spinal nerves functions (2) correct answer: Pathway for sensory and motor impulses Responsible for reflexes, which are quickest reactions to a stimulus Gross anatomy of spinal cord correct answer: Length: 42-45 cm, 16-18 inches Roughly cylindrical, slightly flattened posteriorly and anteriorly Longitudinal depressions on external surface of spinal cord correct answer: Posterior median sulcus Anterior median fissure Parts of spinal cord (5) correct answer: Cervical Thoracic Lumbar Sacral Coccygeal Cervical enlargement correct answer: Located in the inferior cervical part of the spinal cord Innervates the upper limbs Lumbosacral enlargement correct answer: Extends through the lumbar and sacral parts of the spinal cord Innervates the lower limbs Conus medullaris correct answer: Tapering inferior end of the spinal cord Official "end" of the spinal cord proper Usually at the level of the first lumbar vertebr
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marian university bio 225 lecture exam 3 questions