1. BIOLOGY Unit 9 Notes: The nervous & Lymphatic Systems

2. (1) The Nervous System Structures: Functions: Neurons (nerve cell)
Nerves
Brain and Spinal Cord
Functions:
Control all other organ systems.
Respond to stimuli inside and outside the body.
Maintain homeostasis.

5. (2) The Lymphatic System
*AKA  The Immune System 
Structures:
White Blood Cells
Lymph Vessels, Nodes and Fluid
Functions:
Protect the body against infectious agents.
Filter out useless cell parts from the blood and send to excretory system.