Studyclass

Excitable CellsWhat is the charge of the resting membrane potential of all cells? Does the ICF or the ECF carry this charge? What is the average RMP value? Do most cells have an RMP that exists in a broad range or a narrow range? - correct answer All cells carry a negative resting membrane potential, and the ICF is negatively charged relative to the ECF. The average RMP value = -70mV. Most cells have an RMP that is small and w/in a narrow range. What types of cells are excitable cells? What i...

Factors that maintain a Resting Membrane Potential Resting Membrane Potential: - correct answer Exists because of a small buildup of negative ions in the cytosol alone the inside of the membrane, and an equal buildup of positive ions in the extracellular fluid alone the outside surface of the membrane. Factor #1 - correct answer *Unequal distribution of ions in the ECF and cytosol. Extracellular fluid is rich in Na+ and Cl- Cytosol- main cation is K+ -Plasma membrane typically has m...

Graded Potentials, Action Potentials&SynapseGraded Potentials - correct answer A small deviation from the RMP that makes the membrane either more polarized (more negative inside=hyperpolarizing) or less polarized (less negative inside=depolarizing). Hyperpolarizing Graded Potentials - correct answer When the response makes the membrane more polarized (more negative inside). Occurs in soma and dendrites of a neuron. Depolarizing Graded Potentials - correct answer When the response makes the...

ION MOVEMENT AND ACTION POTENTIALMembrane Potential - correct answer separation of positive and negative charges across membrane Resting Membrane Potential RMP - correct answer cell is at rest electrically movement of ions across plasma membrane produces changes in membrane potential - correct answer Rapid, transient fluctuations in membrane potential serve as electrical signals, allowing cells to communicate Depolarization - correct answer decrease in potential, membrane less negative ...

mastering 11 A resting neuron is an unstimulated neuron that is not presently generating an action potential. The resting membrane potential is the separation of the relative positive and negative charges across the membrane of a cell at rest. Drag the charges to the correct side of the membrane to represent the resting membrane potential of a typical neuron. - correct answer The separation of charges creates a voltage (electrical potential difference), which can be measured using a voltmeter...

Mastering A&P - Membrane PotentialIons are unequally distributed across the plasma membrane of all cells. This ion distribution creates an electrical potential difference across the membrane. What is the name given to this potential difference? - correct answer Resting Membrane Potential (RMP) Sodium and potassium ions can diffuse across the plasma membranes of all cells because of the presence of what type of channel? - correct answer Leak channels On average, the resting membrane potenti...

MCC Nervous System and Nervous TissueWhich choice best characterizes K+K+ leakage channels? a. transmembrane channels that use energy to allow the movement of K+K+ across the membrane b. transmembrane protein channels that are always open to allow K+K+ to cross the membrane without the additional input of energy c. chemically gated K+K+ channels that open and close according to the binding of other molecules d. common transmembrane channels that are always open for any ion to move through...

Membrane PotentialDo all living cells have a membrane potential? - correct answer UMM YESH What is a membrane potential? - correct answer Difference in charge inside/outside the cell membrane What is electrical potential? - correct answer When opposite charges are separated they have the potential to do work if allowed to come together What 2 ways can electrical force increase? - correct answer Quantity of charge, decreased charge separation What is the RMP of a typical neuron? - cor...

MRPMRP is for - correct answer dependent demand dependent demand push strategy - correct answer MRP dependent demand pull strategy - correct answer Just in Time MRP - correct answer translates master production schedule into planned orders for actual parts and components needed to produce items according to the master schedule Info needed for MRP - correct answer bill of material, on hand inventory of each part or subassembly, lead time, outstanding orders for parts with expected del...

Nervous System HomeworkThe period after an initial stimulus when a neuron is not sensitive to another stimulus is the ________. - correct answer absolute refractory period Ions are unequally distributed across the plasma membrane of all cells. This ion distribution creates an electrical potential difference across the membrane. What is the name given to this potential difference? - correct answer Resting membrane potential (RMP) Sodium and potassium ions can diffuse across the plasma membr...

Phospholipid Bilayer Phospholipid - correct answer consists of a somewhat circular phosphate group head, and two long , fatty acid chain tails Hydrophilic Head - correct answer Its attracted to water and arranged to be closest to the water molecules Hydrophobic Tail - correct answer Are repelled by water and arranged to be farthest from water molecules Carbohydrate Chain - correct answer substance on the plasma membrane helps identify chemical signals from outside the cell and define c...

Physiology Exam 1Physiology - correct answer The study of how living organisms work T or F: All is known. - correct answer False What is responsible for function and integration, meaning body parts work together at various levels of organization and whole organism? - correct answer Physiology Aristotle - correct answer Speculated on function of human body; Good health associated with balance of humours Erasistratrus - correct answer Father of Physiology; Applied physical laws to stud...

PMI-RMPProject background Information - correct answer Information from before the project was approved, articles written about similar projects and other such information. Assumptions - correct answer Factors that are considered to be true without any proof for planning purposes only, they are part of progressive elaboration as they should be reassessed during project life cycle, they contain a degree of risk. Benefit - correct answer Positive effect on project opportunity arising from oc...

Quiz 2- Membrane Potential Ions are unequally distributed across the plasma membrane of all cells. This ion distribution creates an electrical potential difference across the membrane. What is the name given to this potential difference? - correct answer Resting Membrane Potential (RMP) Sodium and potassium ions can diffuse across the plasma membranes of all cells because of the presence of what type of channel? - correct answer Leak channels On average, the resting membrane potential is ...

Quiz 7 Syphilis Testing (RPR)What does RPR stand for? What does this test, test for? - correct answer rapid plasma reagin, reagin What is reagin? What is its production caused by? - correct answer Reagin is an antibody that is created against lipid material from damaged cells Both of the antigens in this case are insoluble or soluble? Thus, what kind of reaction is this? - correct answer both are soluble; (flocculation) precipitation What is the cause of syphilis? - correct answer Trepo...

Quiz P_________ is the return of polarity from positive back to negative (the RMP) - correct answer Repolarization ________ occurs when the inside of the cell becomes more positive (less negative) than the resting membrane potential - correct answer Depolarization During the ________ ________ an axon is either incapable of generating an action potential, or requires a larger than normal stimulus - correct answer refractory period voltage-gated sodium channels _________ during the relati...

Resting Membrane Potential & Action PotentialAction Potential - correct answer Abrupt, pulsatile changes in membrane potential. Property of excitable cells that consists of rapid depolarization followed by repolarization. AP's have same size & shape; are propagating; and are "all or nothing". Resting Membrane Potential - correct answer Undisturbed period of action potential when nerve is NOT transmitting impulses. Cell membrane is said to be polarized-inside of cell more negatively cha...

Resting Membrane Potential Electrical gradients (such as the transmembrane voltage or RMP) only affects what kind of molecules? - correct answer Charged molecules What is the range of magnitudes (in millivolts) of the resting membrane potential (RMP) of human cells? - correct answer -20 to -100mv Is the inside of the cell electrically negative, or electrically positive, RELATIVE to the extracellular fluid? - correct answer negative How many volts is a millivolt? - correct answer 10^-3 ...

Resting Membrane PotentialElectrical gradients (such as the transmembrane voltage or RMP) only affects what kind of molecules? - correct answer The RMP is needed for the Na+-dependent cotransport of glucose, amino acids & other solutes into cells. 2.) What is the range of magnitudes (in millivolts) of the resting membrane potential (RMP) of human cells? - correct answer The magnitude of the RMP is between - 20 millivolts(mV) and - 100 mV, depending upon cell type & activity. 3.) Is the ins...

RMP 501 Exam 1 Disability - correct answer A reduction in ability or function as a result of an impairment ex: person reading newspaper will have marked difficulty Impairment - correct answer an identifiable organic or functional condition that may be permanent (ex. amputation) or temporary (ex. sprained ankle) ex: person with cataracts is visually impaired Handicap - correct answer Environmentally (or socially) imposed restrictions on the ind. with an impairment that results in a disa...