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A&P Unit 4 Anatomy of the Brain Lecture 2 Part 1 Questions With Complete Solutions
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A&P Unit 4 Anatomy of the Brain Lecture 2 Part 1 Questions With Complete Solutions
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A&P Unit 4 Anatomy of the Brain Lecture 2 Part 1 Questions With Complete SolutionsNeural Plate
Thickening of ectoderm, folds inward to form neural groove
Neural Groove
Development of neural plate, will become neural folds
Neural Folds
Raised edges of neural plate, will become neural tube
Neural Tube
Raised edges of neural folds, forms 3 primary brain vesicles
Cut edge of amnion
Forming of the amniotic cavity
Yolk Sack Wall
Forming of the amniotic sac
Neural Tube Defects
Associated with low levels of folic acid and B vitamins, occur when neural tube does not close properly, reduced risk with folic
acid supplements
Spina Bifida Neural tube defect
Spina Bifida Occulta
Mild case, neural tube does not close all the way allowing the meninges to grow outside of the spinal cord protruding from the child's back
Meningocele
Gap in the bones causing a sac of nerves and spinal fluid to protrude out the child's back between a space in the bones
Myelomeningocele
Most serious form, parts of the spinal cord go into the sac outside the child's back
Anencephaly
Serious birth defect when a child is born without parts of the brain or skull
Prosencephalon
Most anterior primary brain vesicle during embryonic development, will become forebrain
Mesencephalon
Middle primary brain vesicle during embryonic development, will become midbrain and aqueduct of midbrain (cerebral aqueduct)
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