Kinesiology 3222A/B Study Guide - Fall 2018, Comprehensive Midterm Notes - Pharynx, Esophagus, Epithelium
12 Oct 2018
School
Department
Course
Professor
Kinesiology 3222A/B
MIDTERM EXAM
STUDY GUIDE
Fall 2018
Anatomy Lecture 1 January 5th
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The Nervous System
Central nervous system
• Brain (cranial cavity)
o 100 billion neurons
• Spinal cord (vertebral canal, spinal canal, spinal cavity)
o 100 million neurons
Peripheral nervous system
Functional organization
SNS (somatic nervous system)
ANS (autonomic nervous system)
• Sympathetic
• Parasympathetic
ENS (enteric nervous system)
Going towards the brain is afferent
Going away from the brain or spinal cord is efferent
CNS
• This is where we integrate the sensory signal to the motor response
Nervous tissue
Neurons
• Specialized for carrying electrical signals
• Synapses – allow one neuron to connect to an effector organ
• Targets effector cells
Glia
• Do not participate directly in synaptic interactions
• Supportive role
• Insulation
• More numerous than neurons (3:1)
Cartoon of a neuron
• Dendrite – receptive field for a neuron, all inputs from the nervous system arrive at the
dendritic tree, these signals travel from the dendritic branches towards the cell body
find more resources at oneclass.com
find more resources at oneclass.com
• Cell body – formulates a response at the axon hillock, hillock=point of departure of
ao, read-out coveed via ao, eds i a sapse, i order for a ao to trasit
an action potential it has myelin which helps it to function more quickly, at the axon
terminal it is going to connect to an effector organ (muscle, gland, another neuron, etc.)
find more resources at oneclass.com
find more resources at oneclass.com
