Neural Systems and Brain Anatomy

📋 Course Outline

1. Nervous System Structure
2. Central Nervous System
3. Brain Anatomy
4. Brain Divisions
5. Neurons and Cells
6. Neurotransmitters
7. Peripheral Nervous System
8. Autonomic Nervous System
9. Sensory and Motor Nerves
10. Cranial Nerves

📖 1. Nervous System Structure

🔑 Key Concepts & Definitions

• Neuron: The fundamental nerve cell responsible for transmitting electrical signals within the nervous system. It consists of a cell body, dendrites, an axon, and terminal buttons.

• Central Nervous System (CNS): Comprises the brain and spinal cord; acts as the main control center, processing information and directing responses.

• Peripheral Nervous System (PNS): Consists of all nerves outside the CNS; transmits sensory information to the CNS and carries motor commands to muscles and glands.

• Myelin Sheath: A fatty insulating layer surrounding many axons, which speeds up electrical signal transmission along the neuron.

• Synapse: The junction between two neurons where neurotransmitters are released, allowing communication between nerve cells.

• Ventricles: Fluid-filled cavities within the brain that produce and circulate cerebrospinal fluid (CSF), cushioning the brain and spinal cord.

📝 Essential Points

• The nervous system is divided into the CNS and PNS; the CNS processes information, while the PNS transmits it.