Term
| Name the major structors of the Nervous System. |
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Definition
| Brain, Spinal Cord, Nerves, Sensory Receptors |
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Term
| There are three functional characteristics of the nervous system. Name them. |
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Definition
1. Sensation/sensory function
2. Integration
3. Motor Response/Motor Function |
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Term
| Define 'Sensation' which is one of the three major functional charactertistics of the nervous system. |
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Definition
| Detections of changes in the body's internal and external environments. This information is carried TOWARD the Brain/Spinal Cord via sensory neurons or AFFERENT neurons. |
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Term
True or False:
Afferent neurons carry signals away from the brain to a sensory organ. |
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Definition
False.
AFFERENT neurons carray a signal UP or TOWARD the CNS. |
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Term
| Degine 'Integration', which is one of the three major functional charactertistics of the nervous system. |
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Definition
| Processes and interprets sensations. This takes place in the brain/spinal cord, and involves interneurons (or association neurons). There may be zero, one, or many of these. |
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Term
| What is another word for association neurons? |
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Definition
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Term
| Define 'Motor Response', which is one of the three major functional charactertistics of the nervous system. |
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Definition
| Causing muscular contraction or glandular secretions. This information is carried AWAY from thr brain/spinal cord via motor or EFFERENT neurons to effectors, which are muscles or glands. |
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Term
True or Flase:
Efferent nuerons carry signals away from the brain/spinal cord to act upon effectors. |
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Definition
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Term
True or False:
Effectors are both muscles and glands. |
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Definition
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Term
| What are the 2 main Subdivisions of the Nervous System? |
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Definition
1. Central Nervous Sytem
2. Peripheral Nervous System |
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Term
| List the characteristics of the CNS, Central Nervous System: |
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Definition
It is comprised of the brain and spinal cord.
It is completely contained within the cranium and spinal column......"nothing hangs out." |
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Term
| List some characteristics of the PNS, Peripheral Nervous System. |
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Definition
| It is comprosed of all nervous tissue outside the CNS. |
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Term
| What does the word, "soma" mean? |
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Definition
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Term
| Name the 2 divisions of the PNS: |
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Definition
1. Somatic Division, Somatic Nervous System, SNS
2. Autonomic Division, Autonomic Nervous System, ANS |
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Term
| What are the two ways the 2 divisions of the PNS divided? |
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Definition
1. By the structures they innervate
2. Regionally |
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Term
| Name the 2 division of the ANS. |
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Definition
1. Sympathetic Division
2. Parasympathetic Division |
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Term
| Describe the Somatic Nervous System, SNS, a division of the PNS. |
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Definition
| Usually conscious and voluntary. Sensory impulses coming from the skin, skeletal muscle, fascia, joints. Motor impulses going to skeletal muscles. |
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Term
| Describe the characteristucs of the ANS, Autonomic Nervous System, a division of the PNS. |
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Definition
| Involuntary and subconscious. Sensory impulses and motor responses to and from smooth muscle, carduac muscle and glands. |
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Term
| The Sympathetic Nervous System, a division of the ANS, Autonomic Nervous System is also described as: |
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Definition
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Term
| The Parasympathetic Nervous System, a division of the ANS, Autonomic Nervous System is also described as: |
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Definition
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Term
True or False:
The 2 sub-divisions of the ANS, the sympathetic division and the parasympathetic division, are dually innervated. |
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Definition
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Term
| Name the 2 Regional Divisions of the PNS. |
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Definition
1. Cranial Nerves
2. Spinal Nerves |
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Term
| How many pairs of Cranial Nerves are there? |
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Definition
12 pairs.
They emerge from the undersurface of the brain.
They are a regional subdivision of the PNS. |
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Term
| How many pairs of Spinal Nerves are there? |
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Definition
31 pairs.
They emerge from the spinal cord each serving a specific region of the body.
They are a regional division of the PNS. |
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Term
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Definition
Conduct electrical impulses - Action Potentials
They do not replicate |
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Term
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Definition
"The Glue" The Supporting Tissue
Neuroglia CAN replicate. |
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Term
| Name the 3 Major Parts of a Neuron: |
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Definition
1. Dendrites
2. Cell Bidy
3. Axon |
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Term
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Definition
| Means, "little trees" they are branch like projections that receive information and pass it throught to thr cell body. |
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Term
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Definition
(soma) It is the main portn of the neuron.
It is where the nucleus is. |
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Term
| What is the difference between a neuron and a nerve? |
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Definition
P. 432
Many nerves make up a neuron.
You can see a nerve, but you can't see a neuron.
They are bundled. |
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Term
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Definition
The transmitting end.
Usually 1 per neuron.
Conducts an impulse away from thr cell body. |
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