Thursday January 7 th, 2016 Bellwork- use a piece of paper which you can use for notes 1.What are the 2 components of the nervous system 2.This component of the nervous system contains all the nervous tissue outside the brain and spine 3.Component of the nervous system known as the command center (an organ) 4.The 2 parts of the PNS are known as 5.Define afferent receptor 6.Define efferent

Wednesday January 6 th, 2016 Bellwork 1.CNS (central nervous system) and PNS (peripheral nervous system) 2.PNS 3.Brain 4.Afferent and Efferent/Autonomic and Somatic 5.Receives information and sends it to the CNS 6.Motor; carries information/actions to muscles and glands

Wednesday January 6 th, 2016 Chapter 9 Bookwork due today by the end of conference If you weren’t here Monday the assignment is on the board. It will be due on FRIDAY You’ll find the book on the class website “I’d rather have a life of ‘oh wells’ than a life of ‘what ifs.’” Happy National Bean Day The founder of match.com lost his girlfriend to a man she meet on match.com

Nervous System Chapter 9

Connects all your body parts and transmits signals from one part to another Body’s master controlling and communicating system Nervous System

Sensory Input Integration Motor Output Receives information Response to information Processes information Nervous System

The brain is a part of the nervous system

Nervous System Part 1 Division 1 Part 2 Division 2 Division 2.1 Division 2.2 Division Division Division Division Organization of the Nervous System The nervous system is divided into different divisions

Major Divisions and Parts of the Nervous System

Part 1 Part 2 Nervous System Division 2.1 Division 2.2 Division Division Division Division

Central Nervous System Nervous System Peripheral Nervous System

Central nervous system (CNS) – Integrating and command center Peripheral nervous system (PNS) – Carry signals to and from the CNS Divisions of the Nervous System

Nervous System Central Peripheral Division 2.1 Division 2.2 Division Division Division Division

Nervous System Central Nervous System Brain Spinal Cord Brain

Functions as organizer and distributor of information for the body CNS: Brain

Center of intellect, emotions, behavior, and memory Directs our behavior toward others. CNS: Brain

Transmits signals to and from the brain Reflexes The spinal cord is protected by the vertebrae / vertebral column / backbone. CNS: Spinal Cord

Brain Central SC Nervous System Peripheral Division Division Division Division

Nervous System Peripheral Nervous System Afferent EfferentEfferent

Also called “Sensory” Bring information to the CNS. PNS: Afferent Neuron

SightSmell HearingTasteTaste Touch

Receive information and send it to the brain - detect different types of stimuli inside your body (blood pressure/body temp) and outside your body (touch) Mechanoreceptors Chemoreceptors Electromagnetic receptors / Photoreceptors Thermoreceptors Pain receptors PNS: Afferent Neuron

Also called “Motor” Carry commands to muscles and glands “Get the eff out of here” Spinal Nerves Cranial Nerves PNS: Efferent Neuron

Nervous System Brain Central SC Peripheral AfferentAfferent Efferent Peripheral Spinal Cord 2. Efferent Division

Nervous System Peripheral Nervous System Somatic Efferent Autonomic

Also called “Voluntary” innervates skeletal muscles PNS: Somatic Nervous System

Cranial nerve Ganglia outside CNS Spinal nerves

Also called “Involuntary” innervates smooth muscles, cardiac muscles, and glands. PNS: Autonomic Nervous System

Nervous System Brain Central SC Spinal Cord AfferentAfferent Peripheral Efferent Somatic Autonomic

“fight or flight” dominates in times of stress Autonomic: Sympathetic Nervous System

“rest and digest” Autonomic: Sympathetic Nervous System

PARASYMPATHETIC DIVISIONSYMPATHETIC DIVISION Brain Constricts pupil Stimulates saliva production Constricts bronchi Slows heart Stimulates stomach, pancreas, and intestines Stimulates urination Promotes erection of genitals Spinal cord EyeEye Salivary glands Lung Heart Liver Stomach Adrenal gland Pancreas Intestines Bladder Genitals Dilates pupil Inhibits saliva production Relaxes bronchi Accelerates heart Stimulates epinephrine and norepi- nephrine release Stimulates glucose release Inhibits stomach, pancreas, a In n h d ib in it t s estines urination Promotes ejacu- lation and vaginal contractions

Nervous System CNS Spinal Cord Peripheral Afferent EfferentEfferent Somatic Autonomic Sympathetic Parasympathetic Brain

Nervous System CNS Brain Cere brum Cerebellum Brain StemSpinal Cord Peripheral Somatic Spinal Nerves Cranial Nerves Autonomic Sympathetic Parasympathetic