Lect 2 Student notes09

Lect 2 Student notes09 - Nervous System 1: Fundamentals of...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Nervous System 1: Fundamentals of Nervous Tissue Dr. Phelps Chapter 12 and Chapter 10: 247-248 Lecture 2 I. Introduction to the nervous system - divisions and functions II. Cellular neuroanatomy: Composition of neurons and supporting cells III. Using neuroanatomical research tools to study the nervous system I. Introduction to the nervous system - divisions and functions - Fig. 12.3 A. Central nervous system (CNS) B. Peripheral nervous system (PNS) and local spinal reflex 1. Afferent neurons have axons that carry information toward CNS 2. Efferent neurons have axons that carry information away from CNS 3. Interneurons C. Somatic motor and sensory divisions D. Visceral motor and sensory divisions II. Cellular neuroanatomy: Composition of neurons and supporting cells A. Characteristics of neurons - Fig. 12.4 General characteristics of neurons: 1. excitable cells 2. generally do not divide after birth 3. normally live a long life 4. high metabolic rate - require large amounts of glucose and oxygen 5. have 2 types of processes
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Soma or Cell Body: - Plasma Membrane - Nucleus and nucleolus - Nissl Bodies/RER - Golgi apparatus - Neurofilaments (called neurofibrils in drawing) Dendrites: - Proximal versus distal part of the dendrite - Function of dendrites - Dendritic spines - Variety of different dendritic structures in different types of neurons. Axon: - Axon hillock - Axonal neurotubules - Axonal transport 1. Retrograde axonal transport : 2. Anterograde axonal transport :
Background image of page 2
3 Synapses occur between an axon terminal and a postsynaptic structure. Fig. 12.8a, b - Presynaptic side : - Synaptic cleft : - Postsynaptic side : Information flow in neurons is always in one direction
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/03/2010 for the course NEUROSCI 101A taught by Professor Scheibell during the Winter '10 term at UCLA.

Page1 / 7

Lect 2 Student notes09 - Nervous System 1: Fundamentals of...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online