BIO 243 Exam 3 Questions with Correct Answers Latest Update 2025/2026
ventral most neurons in gray matter - Answers Somatic Motor Neurons
dorsal most neurons in gray matter - Answers Somatic Sensory Neurons
second most ventral neuron in gray matter - Answers visceral motor neurons
second most dorsal neuron in gray matter - Answers visceral sensory neurons
Norepinephrine class - Answers both
Dopamine class - Answers both
Serotonin class - Answers Inhibitory
Histamine class - Answers both
GABA class - Answers inhibitory
Glutamate class - Answers excitatory
Glycine class - Answers inhibitory
Endorphins class - Answers inhibitory
Tachykinins class - Answers excitatory
somatostatin class - Answers inhibitory
Cholecystokinin class - Answers excitatory
ATP class - Answers both
Adenosine class - Answers inhibitory
Nitric oxide class - Answers both
Carbon monoxide class - Answers both
Endocannabinoids class - Answers inhibitory
Most ______ neurons are interneurons - Answers multipolar
Some ______ neurons are motor neurons - Answers multipolar
All ______ neurons are sensory neurons - Answers Bipolar or Unipolar
, Primary or first order sensory neurons - Answers Unipolar
neurons responsible for visual inputs from the eye to the brain - Answers bipolar
conducts nerve impulses from the brain or spinal cord out to effectors - Answers motor neurons
Transmits nerve impulses between neurons within the brain and spinal cord - Answers
interneurons
conducts nerve impulses from receptors into the brain or spinal cord - Answers sensory
neurons
most common type of neuron in the brain and spinal cord - Answers Multipolar
location of bipolar neurons - Answers parts of the eye and ear
location of unipolar neurons - Answers in ganglia outside the brain or spinal cord
location of multipolar neurons - Answers in the brain and spinal cord
Cells that participate in the metabolism of neurotransmitters and maintain the proper balance of
K+ - Answers Astrocytes
Cells that give support to neurons in CNS; produce myelin sheath around axons - Answers
Oligodendrocytes
Cells that provide a link between neurons and blood vessels - Answers Astrocytes
Cells most common in CNS - Answers Oligodendrocytes
Cells found in white matter of the CNS - Answers Astrocytes
Cells that engulf and destroy microbes and cellular debris in the CNS - Answers Microglia
Cells that function as macrophages in the CNS - Answers Microglia
Cells that assist in the circulation or CSF - Answers Ependymal
Cells that form a continuous epithelial lining for the ventricles of the brain - Answers Ependymal
Cells that produce myelin sheath around axons of PNS neurons - Answers Neurolemmocytes
Cells that participate in repair process after injury - Answers Neurolemmocytes
Cells that produce the nerve growth factor - Answers Neurolemmocytes
Cells that support neurons in ganglia of PNS - Answers Satellite
Function of Basal ganglia - Answers help regulate voluntary motor activity (skeletal muscles)
ventral most neurons in gray matter - Answers Somatic Motor Neurons
dorsal most neurons in gray matter - Answers Somatic Sensory Neurons
second most ventral neuron in gray matter - Answers visceral motor neurons
second most dorsal neuron in gray matter - Answers visceral sensory neurons
Norepinephrine class - Answers both
Dopamine class - Answers both
Serotonin class - Answers Inhibitory
Histamine class - Answers both
GABA class - Answers inhibitory
Glutamate class - Answers excitatory
Glycine class - Answers inhibitory
Endorphins class - Answers inhibitory
Tachykinins class - Answers excitatory
somatostatin class - Answers inhibitory
Cholecystokinin class - Answers excitatory
ATP class - Answers both
Adenosine class - Answers inhibitory
Nitric oxide class - Answers both
Carbon monoxide class - Answers both
Endocannabinoids class - Answers inhibitory
Most ______ neurons are interneurons - Answers multipolar
Some ______ neurons are motor neurons - Answers multipolar
All ______ neurons are sensory neurons - Answers Bipolar or Unipolar
, Primary or first order sensory neurons - Answers Unipolar
neurons responsible for visual inputs from the eye to the brain - Answers bipolar
conducts nerve impulses from the brain or spinal cord out to effectors - Answers motor neurons
Transmits nerve impulses between neurons within the brain and spinal cord - Answers
interneurons
conducts nerve impulses from receptors into the brain or spinal cord - Answers sensory
neurons
most common type of neuron in the brain and spinal cord - Answers Multipolar
location of bipolar neurons - Answers parts of the eye and ear
location of unipolar neurons - Answers in ganglia outside the brain or spinal cord
location of multipolar neurons - Answers in the brain and spinal cord
Cells that participate in the metabolism of neurotransmitters and maintain the proper balance of
K+ - Answers Astrocytes
Cells that give support to neurons in CNS; produce myelin sheath around axons - Answers
Oligodendrocytes
Cells that provide a link between neurons and blood vessels - Answers Astrocytes
Cells most common in CNS - Answers Oligodendrocytes
Cells found in white matter of the CNS - Answers Astrocytes
Cells that engulf and destroy microbes and cellular debris in the CNS - Answers Microglia
Cells that function as macrophages in the CNS - Answers Microglia
Cells that assist in the circulation or CSF - Answers Ependymal
Cells that form a continuous epithelial lining for the ventricles of the brain - Answers Ependymal
Cells that produce myelin sheath around axons of PNS neurons - Answers Neurolemmocytes
Cells that participate in repair process after injury - Answers Neurolemmocytes
Cells that produce the nerve growth factor - Answers Neurolemmocytes
Cells that support neurons in ganglia of PNS - Answers Satellite
Function of Basal ganglia - Answers help regulate voluntary motor activity (skeletal muscles)
