medical all

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  1. Anterior spinal artery:
  2. A)This supplies the whole medial part of the medulla oblongata.
  3. Posterior inferior cerebellar artery
  4. A)This is a major branch of the vertebral artery, and supplies the posterolateral part of the medulla, where the main sensory tracts run and synapse
  5. The medulla oblongata (or medulla) is located
  6. in the hindbrain, anterior to the cerebellum.
  7. The medulla oblongata is a cone-shaped neuronal mass responsible
  8. for multiple autonomic (involuntary) functions ranging from vomiting to sneezing.
  9. an upper open part or superior part where the dorsal surface of the medulla is formed by
  10. the fourth ventricle.
  11. The anterior median fissure contains a fold of pia mater
  12. extends along the length of the medulla oblongata. It ends at the lower border of the pons in a small triangular area, termed the foramen cecum.
  13. a spinal nerve.
  14. The dorsal root of spinal nerve (or posterior root of spinal nerve) is one of two "roots" which emerge from the spinal cord. It emerges directly from the spinal cord, and travels to the dorsal root ganglion. Nerve fibres with the ventral root then combine to form
  15. The production of the myelin sheath is called myelination or myelinogenesis. In humans,
  16. myelination begins in the 14th week of fetal development, although little myelin exists in the brain at the time of birth. During infancy, myelination occurs quickly, leading to a child's fast development, including crawling and walking in the first year. Myelination continues through the adolescent stage of life.
  17. myelinate the axons of the central nervous system
  18. whereas oligodendrocytes, specifically of the interfascicular type, myelinate the axons of the central nervous system.
  19. Cholesterol is an essential constituent of myelin.[2] Myelin is about 40% water; the dry mass is about 70–85% lipids and about 15–30% proteins. Some of the proteins are myelin basic protein, myelin oligodendrocyte glycoprotein, and proteolipid protein. The primary lipid of myelin is a glycolipid called galactocerebroside
  20. Myelin Oligodendrocyte Glycoprotein (MOG) is a glycoprotein believed to be important in the myelination of nerves in the central nervous system (CNS). In humans this protein is encoded by the MOG gene.[2][3][4] It is speculated to serve as a necessary “adhesion molecule” to provide structural integrity to the myelin sheath and is known to develop late on the oligodendrocyte.[5]
  21. These are the gracile fasciculus,
  22. The posterior part of the medulla between the posterior median sulcus and the posterolateral sulcus contains tracts that enter it from the posterior funiculus of the spinal cord
  23. and the cuneate fasciculus
  24. , lying laterally. These fasciculi end in rounded elevations known as the gracile and the cuneate tubercle
  25. The soma (cell bodies) in these nuclei are the second-order neurons of the posterior column-medial lemniscus pathway, and their axons, called the internal arcuate fibers or fasciculi, decussate from one side of the medulla to the other to form the medial lemniscus.
  26. which connects the medulla to the cerebellum.
  27. The fossa is bounded on either side by the inferior cerebellar peduncle
  28. Direct branches of the vertebral artery: The vertebral artery supplies an area between the other two main arteries, including the solitary nucleus and other sensory nuclei and fibers.
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medical all
2016-01-20 13:01:30
all systems
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