UNT BIOL 3800 - Chapter 6: Part I Communication along and Between Membranes (4 pages)

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Chapter 6: Part I Communication along and Between Membranes



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Chapter 6: Part I Communication along and Between Membranes

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About how neurons Communicate within themselves and other neurons


Lecture number:
7
Pages:
4
Type:
Lecture Note
School:
University of North Texas
Course:
Biol 3800 - Animal Physiology

Unformatted text preview:

BIOL 3800 1st Edition Lecture 7 Outline of Current Lecture I Pop Quiz Discussion Questions and Answers II Communication Along and Between Neurons A Transmission of Information in a Single Neuron III Conduction Velocities and History A Helmholtz 1845 B Average Fiber Diameter Current Lecture Chapter 6 Part I Communication along and Between Membranes I Pop Quiz Discussion Questions and Answers 1 Myelin is made by astrocytes in the central nervous system False Made by oligodendrites and Schwann Cells 2 Diffusion is a passive transport that requires neither ATP nor thermal energy it is only concentration dependent False 3 During the rising phase of the action potential the sodium current stops when the membrane potential reaches zero False 4 The bond between carbon and oxygen atoms in an amino acid molecule is approximately 5 kcal mol False 5 Glia cells cannot make action potentials because they do not have membrane potentials False all cells have membrane potentials These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute 6 For mammalian cells a 240 milliosmolar salt solution is hypotonic True 7 Saturated fats contain no double bonds in their carbon chain True 8 Gap junctions also can serve as electrical synapses True 9 Gap junction allows the passage of molecule up to a maximum of 150 daltons False 10 After sodium has entered during the action potential the Na K pump brings the membrane potential back to the normal negative resting level False 11 Graded potentials are NEVER self propagating True 12 Movement of ions during the action potential occur mostly through the sodium pump protein False 13 In order for the voltage gated channel to open ATP must be hydrolyzed False not ATP dependant 14 Artificial kidneys work primarily via a process called dialysis Which mode of membrane transport is responsible for dialysis a ATP dependent transport b diffusion transport c pressure



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