Ch. 12 - The Nervous System I: Neurons and Neuronal NetworksSee all chapters
All Chapters
Ch. 1 - Introduction to Physiology
Ch. 2 - Molecules and Molecular Interactions
Ch. 3 - Cells and Tissues
Ch. 4 - Cell Metabolism: Bioenergetics, Enzymes, and Respiration
Ch. 5 - Membrane Dynamics
Ch. 6 - Cell Communication
Ch. 7 - Integumentary System
Ch. 8 - Bone and Cartilage
Ch. 9 - Skeletal System
Ch. 10 - Joints
Ch. 11 - Muscles
Ch. 12 - The Nervous System I: Neurons and Neuronal Networks
Ch. 13 - The Nervous System II: The Central Nervous System
Ch. 14 - The Autonomic Nervous System
Ch. 15 - Sensory Physiology
Ch. 16 - The Endocrine System
Ch. 17 - Cardiovascular Physiology I: The Heart
Ch. 18 - Cardiovascular Physiology II: Blood, Blood Vessels, Circulation, and Exchange
Ch. 19 - The Urinary System
Ch. 20 - Respiratory Physiology
Ch. 21 - Acid-Base Balance-- Controlling Blood pH
Ch. 22 - Introduction to the Immune System
Ch. 23 The Lymphatic System
Ch. 23 - The Digestive System
Ch. 24 - Regulation of Metabolism and Energy Balance
Ch. 25 - Human Sexual Reproduction and Development

Concept #1: Post-Synaptic Potentials

Concept #2: Review of Threshold Potential

Concept #3: Excitatory vs. Inhibitory PSPs

Practice: γ-aminobutyric acid (GABA) is a neurotransmitter important in brain function. GABA binds to GABA receptors on post-synaptic neurons; when GABA is bound to GABA receptors, the GABA receptors open to allow Cl- to cross the cell membrane. For neurons in the brain, ECl-= -90 mV. Which of the following describes the post-synaptic potentials caused by GABA binding to GABA receptors in the brain?

Practice: Nicotinic acetylcholine receptors are post-synaptic receptors throughout the body. When Ach is bound to them, nAchRs open to allow Na+ (and K+, but mostly Na+) to cross the cell membrane. For neurons in the brain, ENa+=+60 mV. Which of the following describes the post-synaptic potentials caused by Ach binding to nAchRs receptors?