PSYC 100 Lecture Notes - Lecture 7: Basal Ganglia, Reward System, Motor Cortex
2 Jun 2018
School
Department
Course
Professor
PSYC 100 – Lecture 7
Structure & Organization of the Nervous System
Divisions of the Nervous System
• Central Nervous System
o Consists of the brain and the spinal cord
• Peripheral nervous system
o A division of the nervous system that transmits signals between the brain
and the rest of the body and is divided into two subcomponents, the
somatic system and the autonomic system
o Somatic nervous system: consists of nerves that control skeletal muscles,
which are responsible for voluntary and reflexive movement; it also
consists of nerves that receive sensory input from the body
o Autonomic nervous system: the portion of the peripheral nervous system
responsible for regulating the activity of organs and glands
o Sympathetic nervous system: responsible for the fight-or-flight response
of an increased heart rate, dilated pupils, and decreased salivary flow –
responses that prepare the body for action
o Parasympathetic nervous system: helps maintain homeostatic balance in
the presence of change; following sympathetic arousal, it works to return
the body to a baseline, nonemergency state
The Brain & its Structures
• Hindbrain
o Consists of structures responsible for controlling basic, life-sustaining
processes
o B : w
structures: the medulla and the pons
find more resources at oneclass.com
find more resources at oneclass.com
65
PSYC 100 Full Course Notes
Verified Note
65 documents
