LSC ANATOMY & PHYSIOLOGY LL W/ACCESS
4th Edition
ISBN: 9781264893119
Author: McKinley
Publisher: MCG CUSTOM
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Chapter 12, Problem 6DYKB
Summary Introduction
Introduction:
Neuron is a basic and functional unit of nervous system and is the specialized cells of nervous system that makes a complex network for the transmission of message. A neuron is made up of a cell body, nerve fibers: dendrites and an axon in its structure.
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Multiple sclerosis is a demyelinating disease, in which the patient’s immune system attacks and destroys the cells that form the myelin sheath in the central nervous system. Which cell would be responsible? Would Schwann cells or oligodendrocytes, both or none of them be affected?
a.
Schwann cell
b.
Oligodendrocytes
c.
Both Schwann cells and Oligodendrocytes
d.
None of the above
The cells of neuroglia are formed from two sources: ectoderm and mesenchyme.
What cells have the mesenchymal origin?
a. Fibrillar astrocyte
b. Microgliocytes
c. Ependymal cell
d. Oligodendrocyte
e. Protoplasmic astrocyte
Match the neuroglia with the correct function:
A. Satellite cells
B. Schwann Cells
C. Oligodendrocytes
D. Ependymal
E. Microglia
F. Astrocytes
1. Cells that produce the myelin in the PNS.
2. Cells that produce myelin in the CNS
3. Phagocytes that dispose debris like dead brain cells and bacteria
4. Anchors and braces neurons with cellular projections
5. Cells have cilia that help circulate the cerebrospinal fluid
6. Cells help cushion and protect neurons in the PNS
7. Cells serve as a medium for diffusion between capillaries and neurons
8. Cells line cavities of the brain and spinal cord
Chapter 12 Solutions
LSC ANATOMY & PHYSIOLOGY LL W/ACCESS
Ch. 12.1 - Prob. 1WDYLCh. 12.1 - Prob. 2WDYLCh. 12.1 - Prob. 3WDYLCh. 12.2 - Prob. 4WDYLCh. 12.2 - Prob. 5WDYLCh. 12.2 - Prob. 6WDYLCh. 12.2 - Prob. 7WDYLCh. 12.2 - Prob. 8WDYLCh. 12.3 - Prob. 9WDYLCh. 12.4 - If a person has a brain tumor, is it more likely...
Ch. 12.4 - Prob. 11WDYLCh. 12.4 - Prob. 12WDYLCh. 12.4 - Prob. 13WDYLCh. 12.5 - Prob. 14WDYLCh. 12.5 - Prob. 15WDYLCh. 12.6 - Prob. 16WDYLCh. 12.6 - Prob. 17WDYLCh. 12.7 - Prob. 18WDYLCh. 12.7 - Prob. 19WDYLCh. 12.7 - Prob. 20WDYLCh. 12.8 - How are EPSP and IPSP graded potentials...Ch. 12.8 - Prob. 22WDYLCh. 12.8 - How does depolarization and repolarization occur...Ch. 12.8 - Prob. 24WDYLCh. 12.8 - Prob. 25WDYLCh. 12.9 - Prob. 26WDYLCh. 12.9 - Prob. 27WDYLCh. 12.9 - Prob. 28WDYLCh. 12.10 - Prob. 29WDYLCh. 12.10 - Prob. 30WDYLCh. 12.10 - Prob. 31WDYLCh. 12.11 - Prob. 32WDYLCh. 12.11 - Prob. 33WDYLCh. 12 - Prob. 1DYKBCh. 12 - Prob. 2DYKBCh. 12 - Prob. 3DYKBCh. 12 - Prob. 4DYKBCh. 12 - Prob. 5DYKBCh. 12 - Prob. 6DYKBCh. 12 - _____ 7. An action potential is generated when...Ch. 12 - Prob. 8DYKBCh. 12 - Prob. 9DYKBCh. 12 - Prob. 10DYKBCh. 12 - What are the four structural types of neurons? How...Ch. 12 - Prob. 12DYKBCh. 12 - How does myelination differ between the CNS and...Ch. 12 - Describe the procedure by which a PNS axon may...Ch. 12 - Prob. 15DYKBCh. 12 - Prob. 16DYKBCh. 12 - Explain summation of EPSPs and IPSPs and the...Ch. 12 - Graph and explain the events associated with an...Ch. 12 - Prob. 19DYKBCh. 12 - Prob. 20DYKBCh. 12 - Prob. 1CALCh. 12 - Prob. 2CALCh. 12 - Prob. 3CALCh. 12 - Prob. 4CALCh. 12 - Sarah wants to call her new friend Julie and needs...Ch. 12 - Over a period of 6 to 9 months, Marianne began to...Ch. 12 - Prob. 2CSLCh. 12 - Prob. 3CSL
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- Match the types of neuroglia to their functions. (1) ependymal cells (2) oligodendrocytes (3) astrocytes (4) Schwann cells (5) microglial cells A. form a myelin sheath around peripheral nerves B. phagocytize cellular debris and bacteria C. line inner parts of ventricles and spinal cord D. form scar tissue and regulate ion and nutrient concentrations in the CNS E. form a myelin sheath around neurons in the CNSarrow_forwardWhich of the following central nervous system cellsregulate ions, regulate the uptake and/or breakdown ofsome neurotransmitters, and contribute to the formation ofthe blood-brain barrier?a. microgliab. neurogliac. oligodendrocytesd. astrocytesarrow_forwardIn the sympathetic nervous system, which of the following prevents apoptosis? A. Steroid hormones B. Nerve growth factor C. Physical exercise D. Myelinationarrow_forward
- Because of the blood brain barrier, the brain is largely inaccessible to circulating macrophages instead one type of CNS cell (related to macrophages) can become phagocytic. Which type of cell is this?arrow_forwardThe main branches of an axon are called ___________. A) telodendria B) axon hillocks C) axon terminals D) axon collaterals E) dendritesarrow_forwardAxons found around the area indicated by the arrow in the figure above are myelinated by A. astrocytes B. dorsal root ganglion cells C. microglia D. oligodendrocytes E. Schwann cellsarrow_forward
- Match each type of neuroglial cell with its correct function._____ Schwann cells a. Phagocytic cells of the CNS_____ Ependymal cells b. Surround the cell bodies of_____ Microglial cells neurons in the PNS c. Create the myelin sheath in the PNS_____ Oligodendrocytes d. Anchor neurons and blood vessels, maintain extracellular nvironment around neurons, assist in repair of damaged brain tissue_____ Satellite cells e. Create the myelin sheath in the CNS_____ Astrocytes f. Ciliated cells in the CNS…arrow_forward15) The concentration of ions in the chemical environment surrounding the neurons must be tightly regulated for neurons to function properly. Which of the following cells is most responsible for this? a) astrocytes b) Schwann cells c) oligodendrocytes d) satellite cellsarrow_forwardWhich of the following is not a way neuroglia cells help neurons? A. Provide support and protection B. Speed up electrical signals C. Provide nutrients D. Send electrical signals themselvesarrow_forward
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