According to the equation expressed as Ohm\'s law, which of these would cause th
ID: 81770 • Letter: A
Question
According to the equation expressed as Ohm's law, which of these would cause the greatest increase in current? A) reducing voltage by half and doubling resistance B) doubling voltage and reducing resistance by half C) quadrupling both voltage and resistance D) doubling both voltage and resistance E) reducing both voltage and resistance by half Which of the following is NOT true of glial cells? A) Neurons outnumber glial cells 10 to 1 in the nervous system. B) They are important for the growth and development of the nervous system. C) They form the myelin for axons. D) They deliver fuel molecules to neurons and remove the waste products of metabolism E) They regulate the composition of the extracellular fluid in the CNS Which is FALSE about neurons? A) A given neuron can be either a presynaptic neuron or a neuron. B) An individual neuron can receive information from multiple other neurons. C) A neuron receives information on its axons and delivers it to other neurons through its dendrites. D) An individual neuron can transmit information to multiple other neurons. E) A neuron can simultaneously release more than one type of neurotransmitter. Which is characteristic of a person chronically suffering from hypoxic hypoxia? A) higher-than-normal hematocrit B) higher-than-normal alveolar Po_2 C) lower-than-normal lactic acid prediction D) lower-than-normal blood flow through tissues E) higher-than-normal arterial P_o2 Which is TRUE about typical, resting neurons? A) The permeability of the plasma membrane to potassium ions is much greater than its permeability to sodium ions B) The concentration of sodium ion is greater inside the cell than outside. C) The plasma membrane is completely impermeable to potassium ions. D) The plasma membrane is most permeable to sodium ions. E) The plasma membrane is completely impermeable to sodium ions.Explanation / Answer
49.A) Neurons outernumber glial cells 10 to 1 in the nervous system,because its 1 to 10.
50. C)A neuron recieve information on its axons and delivers to its other neurons through its dendrites .This statement is false,because neurons recieve information on its dendrites and deliver to other neurons through axons.
51.D) lower than normal blood flow through tissues.Hypoxemia (low oxygen in your blood) can cause hypoxia (low oxygen in your tissues)
52.a) The permeability of the plasma membrane to the potassium ions are much greater than its permeability to sodium ions.
A resting neuron has a voltage across its membrane called the resting membrane potential.
The resting potential is determined by concentration gradients of ions across the membrane and by membrane permeability to each type of ion.
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