NSCS 200: Exam 1 ACTUAL QUESTIONS
AND CORRECT ANSWERS
building blocks of the nervous system - CORRECT ANSWER 1. neurons and glia
2. muscles
3. motor units
4. neuromuscular junction
neurons - CORRECT ANSWER 1.process info
2. sense environmental and internal changes
3. communicate changes to other neurons
4. command body responses
5. contain genetic info
6. make proteins
glia cells - CORRECT ANSWER insulate, support, nourish neurons, assist with migration
to final resting place
types of neurons - CORRECT ANSWER 1. motorneurons
2. interneurons
3. medium spiny neurons
astrocytes - CORRECT ANSWER blood-brain barrier
types of myelin sheath support - CORRECT ANSWER oligodendrocytes - CNS and
Schwann cells - PNS
, consequences of myelin sheath degeneration - CORRECT ANSWER multiple sclerosis
which affect CNS protective coating, affects cellular/neural communication, immune system
damages and destroys oligodendrocytes
what happens when you do not have enough myelin sheath wrapping neurons? - CORRECT
ANSWER nerve signals are slower
astrocyte - CORRECT ANSWER star shaped glial cell of the CNS; Removes waste when
neurons die and controls amt. of blood flow to each area of the brain. Important for info
processing
axon - CORRECT ANSWER conducts electrical impulses away from the neuron's cell
body
oligodendroctye - CORRECT ANSWER type of neuroglia that provides support and
insulation to axons in the CNS by creating the myelin sheath
microglial cell - CORRECT ANSWER resident macrophages of the brain and spinal cord
that act as the first and main form of active immune defense in the CNS
schwann cell - CORRECT ANSWER glia of the PNS that provides support of the neurons
with myelin sheath
axon terminals - CORRECT ANSWER where axons make synaptic contacts with other
nerve cells or with effetor cells (muscle or gland cells); contain neurotramsmitters
axon hillock - CORRECT ANSWER action potentials start here
dentrites - CORRECT ANSWER neural processing occurs here; impulses received from
other cells at synapses are transmitted to the cell body; sites of most synaptic inputs to a neuron
AND CORRECT ANSWERS
building blocks of the nervous system - CORRECT ANSWER 1. neurons and glia
2. muscles
3. motor units
4. neuromuscular junction
neurons - CORRECT ANSWER 1.process info
2. sense environmental and internal changes
3. communicate changes to other neurons
4. command body responses
5. contain genetic info
6. make proteins
glia cells - CORRECT ANSWER insulate, support, nourish neurons, assist with migration
to final resting place
types of neurons - CORRECT ANSWER 1. motorneurons
2. interneurons
3. medium spiny neurons
astrocytes - CORRECT ANSWER blood-brain barrier
types of myelin sheath support - CORRECT ANSWER oligodendrocytes - CNS and
Schwann cells - PNS
, consequences of myelin sheath degeneration - CORRECT ANSWER multiple sclerosis
which affect CNS protective coating, affects cellular/neural communication, immune system
damages and destroys oligodendrocytes
what happens when you do not have enough myelin sheath wrapping neurons? - CORRECT
ANSWER nerve signals are slower
astrocyte - CORRECT ANSWER star shaped glial cell of the CNS; Removes waste when
neurons die and controls amt. of blood flow to each area of the brain. Important for info
processing
axon - CORRECT ANSWER conducts electrical impulses away from the neuron's cell
body
oligodendroctye - CORRECT ANSWER type of neuroglia that provides support and
insulation to axons in the CNS by creating the myelin sheath
microglial cell - CORRECT ANSWER resident macrophages of the brain and spinal cord
that act as the first and main form of active immune defense in the CNS
schwann cell - CORRECT ANSWER glia of the PNS that provides support of the neurons
with myelin sheath
axon terminals - CORRECT ANSWER where axons make synaptic contacts with other
nerve cells or with effetor cells (muscle or gland cells); contain neurotramsmitters
axon hillock - CORRECT ANSWER action potentials start here
dentrites - CORRECT ANSWER neural processing occurs here; impulses received from
other cells at synapses are transmitted to the cell body; sites of most synaptic inputs to a neuron
