BCS UNIT 1 EXAM Questions and answers

In a biopsychology experiment, the subjects are _____ and behavior is the ____ variable a) human, dependent b) human, independent c) nonhuman, dependent d) nonhuman, independent c) nonhuman, dependent Glial cells improve neuron function in many ways. For example, ____ provide myelin for one axon to secure conduction of action potentials, while _____ form electrical synapses with both a neuron and its target to ensure communication a) oligodendrocytes and astrocytes b) oligodendrocytes and microglia c) Schwann cells and astrocytes d) Schwann cells and microglia c) Schwann cells and astrocytes The sympathetic nervous system differs from the parasympathetic nervous system in a variety of ways including that sympathetic nerves exit _____ of the spinal cord and synapse on second-stage neurons ____ the spinal cord. A) from the middle, near to B) from the middle, far from C) from the ends, near to D) from the ends, far from A) from the middle, near to A neuron is at its resting membrane potential of -70 mV, and has a threshold for firing an action potential of -60 mV. All at the same time, it receives EPSPs at five dendrites each of 2mV amplitude. This is called ____, and the neuron ____. A) spatial summation, is not likely to fire B) spatial summation, will likely fire an action potential C) temporal summation, is not likely to fire D) temporal summation, will likely fire an action potential A) spatial summation, is not likely to fire Which of the following cells will give rise directly to the somatic nervous system? A) totipotent cells B) neural crest cells C) embryonic stem cells D) radial glial cells B) neural crest cells In which of the following planes would a cut need to be made to divide in half the reticular formation (i.e. perpendicular to its long axis)? A) frontal B) sagittal C) horizontal D) cross-section C) horizontal