| A | B |
|---|
| 3 basic functions of the nervous system | Sensory, integrative & motor |
| Name the 2 parts of the CNS. | Brain & spinal cord |
| If nervous tissue is not part of the CNS, it must belong to the _____ nervous system. | Peripheral |
| Motor neurons of the ____ division of the nervous system conduct voluntary impulses to skeletal muscle only. (Make your answer very specific) | Somatic |
| Sensory neurons can also be called ____ neurons. | Afferent |
| Motor neurons can also be called ____ neurons. | Efferent |
| _____ motor neurons carry impulses to smooth muscle, cardiac muscle, & glands. | Autonomic |
| The "brain of the gut" is also called the ____ nervous system. | Enteric |
| INVOLUNTARY impulses to skeletal muscle would be carried by ___motor neurons. | Autonomic |
| Neurons that monitor stretch and chemical changes in the stomach & intestine belong to the ___ nervous system. | Enteric |
| Supporting cells of the nervous system are called ____. | Neuroglia (glial cells) |
| Name the 4 glial cells found in the CNS. | Astrocytes, oligodendrocytes, microglia, & ependyma. |
| Glial cells that participate in uptake of neurotransmitters, help form the blood-brain barrier, & generally help provide an ideal environment for neurons are ____. | Astrocytes |
| Phagocytic glial cells of the CNS are the ___. | Microglia |
| Glial cells that myelinate CNS axons are the ___. | Oligodendrocytes |
| Glial cells that line the ventricles of the brain & form CSF are the ____. | Ependyma |
| Name the 2 neuroglial cells of the PNS. | Schwann cells & satellite cells |
| The glial cells that myelinate PNS axons are the ___. | Schwann cells |
| Cells that support neurons in ganglia are the ____. | Satellite cells (NOT the same as skeletal muscle satellite cells) |
| A pigment that accumulates in neurons due to activity of lysosomes is ___. | Lipofuchsin |
| Rough ER and associated ribosomes in the cell body of a neuron is called ____. | Nissl bodies or chromatophilic substance |
| Processes of a neuron that conduct impulses toward the cell body are the ____. | Dendrites |
| Processes of a neuron that conduct impulses away from the cell body are the ____. | Axons |
| The cytopolasm inside an axon can be called ____; the plasma membrane surrounding it can be called ____. | Axoplasm / axolemma |
| The ends of most axons divide into _____; each of these ends in a _____. | Axon terminals / synaptic end bulb |
| Axons communicate with ___, ____, or ____. | Muscle (any of the 3 types), glands, or another neuron. |
| A neuron with several dendrites and 1 axon is classified as a ____ neuron. | Multipolar |
| A neuron with 1 dendrite and 1 axon is classified as a ____ neuron. | Bipolar |
| A neuron with one process that connects to the cell body is classified as a ____ neuron. | Unipolar |
| What is the major function of the myelin sheath? | Speeds nerve impulse conduction |
| Neurons that transmit impulses from receptors into the CNS are classified as ____ or ____ neurons. | Afferent or sensory |
| Neurons that transmit impulses from the CNS to effectors are classified as ___ or ___ neurons. | Efferent or motor |
| Neurons that carry impulses from one neuron to another neuron are classified as ______. | Interneurons |
| What the myelin sheath really consists of is ____. | Many wraps of plasma membrane of a Schwann cell |
| The outermost layer of the Schwann cell, which contains the nucleus and cytoplasm, forms the ____. | Neurolemma |
| Bare areas of axon between the lumps of the myelin sheath are called ____. | Nodes of Ranvier |
| CNS axons may be myelinated, but they do not have a ____. | Neurolemma |
| A group of axons bundled together running along the same path in the PNS is called a ___. | Nerve |
| A group of axons bundled together running along the same path in the CNS is called a ____. | Tract |
| A group of nerve cell bodies in the PNS is called a ____. | Ganglion |
| A group of nerve cell bodies in the CNS is called a ____. | Nucleus |
| White matter is made up of ____. | Myelinated axons |
| The function of white matter is ___. | Transmission of nerve impulses |
| Gray matter is made of ___. | Nerve cell bodies (as well as dendrites & unmyelinated axons) |
| The function of gray matter is ____. | Integration & generation of nerve impulses. |
| In the spinal cord, ___ matter is on the outside and ____ is to the inside. | White / gray |
| In the brain, ___ matter is on the outside and ____ is to the inside. | Gray / white |
