Keywords: Resting Potential (4)

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Cellular Neurobiology, Spring 2012
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Cellular Neurobiology, Spring 2012

This course serves as an introduction to the structure and function of ... (more)

This course serves as an introduction to the structure and function of the nervous system. Emphasis is placed on the cellular properties of neurons and other excitable cells. Topics covered include the structure and biophysical properties of excitable cells, synaptic transmission, neurochemistry, neurodevelopment, and the integration of information in simple systems and the visual system. (less)

Subject:
Science and Technology
Life Science
Education
Material Type:
Assessments
Full Course
Homework and Assignments
Lecture Notes
Readings
Syllabi
Provider:
Internet Scout Project
M.I.T.
Provider Set:
Internet Scout Project
MIT OpenCourseWare
Author:
Troy Littleton
William Quinn
Charged Membranes
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Charged Membranes

This Teaching Resource provides three animated lessons that describe the storage and ... (more)

This Teaching Resource provides three animated lessons that describe the storage and utilization of energy across plasma membranes. The “Na,K ATPase” animation explains how these pumps establish the electrochemical gradient that stores energy across plasma membranes. The “ATP synthesizing complexes” animation shows how these complexes transfer energy from the inner mitochondrial membrane to adenosine triphosphate (ATP). The “action potential” lesson explains how charged membranes are used to propagate signals along the axons of neurons. These animations serve as valuable resources for any collegiate-level course that describes these important factors. Courses that might employ them include introductory biology, biochemistry, biophysics, cell biology, pharmacology, and physiology. (less)

Subject:
Life Science
Material Type:
Images and Illustrations
Reference
Provider:
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
Provider Set:
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
Author:
Jack D. Thatcher (Lewisburg;West Virginia School of Osteopathic Medicine REV)
Quantitative Physiology: Cells and Tissues, Fall 2004
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Quantitative Physiology: Cells and Tissues, Fall 2004

Principles of mass transport and electrical signal generation for biological membranes, cells, ... (more)

Principles of mass transport and electrical signal generation for biological membranes, cells, and tissues. Mass transport through membranes: diffusion, osmosis, chemically mediated, and active transport. Electric properties of cells: ion transport; equilibrium, resting, and action potentials. Kinetic and molecular properties of single voltage-gated ion channels. Laboratory and computer exercises illustrate the concepts. For juniors and seniors. Students engage in extensive written and oral communication exercises. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Full Course
Homework and Assignments
Syllabi
Other
Provider:
M.I.T.
Provider Set:
MIT OpenCourseWare
Author:
Freeman, Dennis
Talking about bioelectrical potentials using rings of the mesenteric artery without glass micropipettes
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Talking about bioelectrical potentials using rings of the mesenteric artery without glass micropipettes

In the present study, a practical activity is proposed to adopt an ... (more)

In the present study, a practical activity is proposed to adopt an experimental approach to demonstrate the relationship between the equilibrium potential for K+ and transmembrane electrical potential without glass micropipettes. A conventional setup for recording contractile activity of isolated smooth muscle preparations was used based on the events elegantly described by Somlyo and Somlyo in the 1960s. They showed that, in response to a given stimulus, smooth muscle cells may contract, recruiting electromechanical or pharmacomechanical coupling by mechanisms that involve, or not, changes in transmembrane potential, respectively. By means of contractions and relaxations of a ring-like preparation from the rat mesenteric artery, it is possible to observe the functional consequences of handling K+ concentration in the extracellular compartment and the effects caused by opening K+ channels in that preparation, which are significant when the cell membrane establishes an electrical potential difference between intra- and extracellular compartments (driven mainly by K+ permeability under resting conditions). The effects observed by students fit well with values predicted by Nernst and Goldman-Hodgin-Katz equations, and we demonstrated that the activity is able to improve students' comprehension regarding basic principles of bioelectricity. (less)

Subject:
Life Science
Education
Material Type:
Activities and Labs
Instructional Material
Reference
Provider:
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
Provider Set:
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
Author:
A. A. Santos (School of Medicine, Federal University of Cear)
D.F. Sousa (Federal University of Ceara)
F. Cosker (Federal University of Ceara)
F.J.B. Lima (Federal University of Cear퀌ç)
H.V. Ribeiro-Filho (Federal University of Cear퀌ç)
J.P.M. Pinho (Federal University of Ceara)
M.T.B. Silva (Federal University of Ceara)
P.J.C. Magalhaes (Federal University of Ceara)
R.J.B. de Siqueira (Federal University of Ceara)
T.S. Brito (Federal University of Cear퀌ç)
V.P.D. Bastos (Federal University of Ceara)
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2002 llaF ,gnivloS melborP gnireenignE dna sretupmoC ot noitcudortnI

.desu si egaugnal gnimmargorp avaJ ehT .gninnalp dna ,tnemeganam ,ecneics ,gnireenigne ni ... (more)

.desu si egaugnal gnimmargorp avaJ ehT .gninnalp dna ,tnemeganam ,ecneics ,gnireenigne ni smelborp gnivlos rof seuqinhcet gnipoleved no si sisahpmE .scipot decnavda detceles dna scihparg retupmoc ,gnihcraes dna gnitros ,serutcurts atad ,sdohtem laciremun ,secafretni resu lacihparg ,stpecnoc gnimmargorp revoc smelborp gnimmargorp ylkeeW .esruoc eht fo sucof eht si tnempoleved dna ngised erawtfos detneiro-tcejbO .snoitacilppa cifitneics dna gnireenigne rof sdohtem lanoitatupmoc dna tnempoleved erawtfos latnemadnuf stneserp esruoc sihT (less)