Brain devel - Brain Development What is this 3 Basic Parts 1.Cell body regulates 2.Dendrites collect info 3.Axon transmits info 1 Types of neurons

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1/27/10 1 Brain Development What is this? 3 Basic Parts: 1.Cell body: regulates 2.Dendrites: collect info 3.Axon: transmits info
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1/27/10 2 Types of neurons • Motor neurons (efferent) • Sensory neurons (afferent) • Interneurons Brain Development • Starts before birth and continues throughout life
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1/27/10 3 Formation of Neural Tube Week 3 Neural tube
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1/27/10 4 Neural Tube to Newborn Brain Neural tube diseases • Spina Bifida – Caudal end of neural tube doesn’t close – Spinal cord damage • Anencephaly – Cephal end of tube doesn’t close – Hole in the brain – No real chance of survival Prenatal brain development
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5 Neurogenesis • Neurogenesis begins 3rd or 4th week post conception. • About 250,000 new cells per minute. • Complete by birth? • At birth, 100 billion neurons Neurogenesis Migration • Neural cells migrate to different locations. • Glial cells act as scaffolding. • Migration affected by
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This note was uploaded on 02/17/2011 for the course HK 253 taught by Professor Claxton during the Spring '10 term at Purdue University-West Lafayette.

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Brain devel - Brain Development What is this 3 Basic Parts 1.Cell body regulates 2.Dendrites collect info 3.Axon transmits info 1 Types of neurons

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