4/27/25, 11:15 BIO 229 Biology Terms & Definitions Study Set |
AM
BIO 229 EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS
Practice questions for this set
Learn 1/7 Study using Learn
Consists of the brain and spinal cord.
Select the correct term
1Central Nervous System (CNS) 2Neurons
3Electrochemical Gradient 4Nicotinic ACh receptor (nAChR)
Don't know?
Terms in this set (138)
Central Nervous System Consists of the brain and spinal cord.
(CNS)
Peripheral Nervous Consists of the cranial nerves arising from the
System (PNS) brain, and the spinal nerves arising from the
spinal cord.
Neurons The basic structural and functional units of the
nervous system.
Neuroglia/Glial Cells Supporting cells that aid the functions of
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5
, 4/27/25, 11:15 BIO 229 Biology Terms & Definitions Study Set |
AM
neurons, and are more abundant than
neurons.
Dendrites Branchlike parts of a neuron that are specialized to
receive information.
Axon A threadlike extension of a neuron that carries nerve
impulses (called action
potentials) away from the cell body.
Sensory/Afferent Neurons that conduct impulses from sensory
Neurons receptors TO the brain/spinal cord (CNS).
Motor/ Efferent Neurons that conduct impulses OUT of the
Neurons brain and spinal cord (CNS) to effector
organs.
Cells that form myelin
sheaths around peripheral
Schwann Cells
axons. (PNS)
One____cell for every one axon.
Cells that form myelin
sheaths around axons in
Oligodendrocytes
the CNS.
One_______for many axons.
Act as phagocytes, eating
damaged cells and
Microglia
bacteria, acting as the
brains immune system.
(CNS)
Form blood brain barrier in the CNS.
Astrocytes
Epithelial cells that line the
ventricles of the brain and
Ependymal Cells
the central canal of the
spinal cord. (CNS)
Sheath of Schwann All axons in the PNS are surrounded by a
continuous living sheath of Schwann cells
known as the____.
Myelin Sheath Covers the axon of some neurons and helps speed
neural impulses.
Nodes of Ranvier A gap in the myelin sheath of a nerve, between
2/
5
AM
BIO 229 EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS
Practice questions for this set
Learn 1/7 Study using Learn
Consists of the brain and spinal cord.
Select the correct term
1Central Nervous System (CNS) 2Neurons
3Electrochemical Gradient 4Nicotinic ACh receptor (nAChR)
Don't know?
Terms in this set (138)
Central Nervous System Consists of the brain and spinal cord.
(CNS)
Peripheral Nervous Consists of the cranial nerves arising from the
System (PNS) brain, and the spinal nerves arising from the
spinal cord.
Neurons The basic structural and functional units of the
nervous system.
Neuroglia/Glial Cells Supporting cells that aid the functions of
1/
5
, 4/27/25, 11:15 BIO 229 Biology Terms & Definitions Study Set |
AM
neurons, and are more abundant than
neurons.
Dendrites Branchlike parts of a neuron that are specialized to
receive information.
Axon A threadlike extension of a neuron that carries nerve
impulses (called action
potentials) away from the cell body.
Sensory/Afferent Neurons that conduct impulses from sensory
Neurons receptors TO the brain/spinal cord (CNS).
Motor/ Efferent Neurons that conduct impulses OUT of the
Neurons brain and spinal cord (CNS) to effector
organs.
Cells that form myelin
sheaths around peripheral
Schwann Cells
axons. (PNS)
One____cell for every one axon.
Cells that form myelin
sheaths around axons in
Oligodendrocytes
the CNS.
One_______for many axons.
Act as phagocytes, eating
damaged cells and
Microglia
bacteria, acting as the
brains immune system.
(CNS)
Form blood brain barrier in the CNS.
Astrocytes
Epithelial cells that line the
ventricles of the brain and
Ependymal Cells
the central canal of the
spinal cord. (CNS)
Sheath of Schwann All axons in the PNS are surrounded by a
continuous living sheath of Schwann cells
known as the____.
Myelin Sheath Covers the axon of some neurons and helps speed
neural impulses.
Nodes of Ranvier A gap in the myelin sheath of a nerve, between
2/
5
