Week 14 Practice Quiz (17%) Flashcards
The nervous system is organised to do which of the following
A. Detect changes in the external environment
B. detect changes in the internal environment
C. Evaluate changes in the environment
D. All of the above
E. none of the above
D. All of the above
In the human nervous system
A. Most of the cells are neurons
B. most of the cells are glia cells
C. There are almost equal numbers of glia cells and neurons
D. The ratio of cells is unknown because of the complexity of the nervous system
E. there are neurons only
B. most of the cells are glia cells
Neuroglia
A. Comprise about one-half of the tissue in the CNS
B. retain mitotic potential but do not conduct nerve implants
C. Support and protect neurons
D. A and B are correct
E. A, B and C are correct
E. A, B and C are correct
Grey matter
A. Consists of neuron cell bodies, neuroglia and unmyelinated nerve fibres
B. is found at the periphery of the spinal cord
C. May be found in clusters called ganglia in the central nervous system
D. May be found in clusters called nuclei in the peripheral nervous system
E. all of the above are correct
A. Consists of neuron cell bodies, neuroglia and unmyelinated nerve fibres
White matter in the CNS consists of: A. Myelinated nerve fibres B. neuroglia C. Axons D. Cell bodies E. white blood cells
A. Myelinated nerve fibres
Astrocytes attach to: A. Neurons B. oligodendrocytes C. Blood vessels D. Both A and C E. A and B and C above
D. Both A and C
One of the components of the blood brain barrier is: A. Astrocytes B. neurons C. Myelin D. Oligodendrocytes E. Schwann cells
A. Astrocytes
Which of the following statements does not apply to ependymal cells?
A. They form the sheets of cells that line fluid filled cavities in the brain
B. they make up part of the blood-barrier
C. They produce fluid that fills the cavities in the brain
D. The have cilia to move fluid in the brain
B. they make up part of the blood-brain barrier
Neurons have:
A. Complete regeneration capacity
B. no regeneration capacity
C. Very limited capacity to repair themselves
D. Amazingly rapid and effective regeneration capacity compared with other cells
E. none of the above
C. Very limited capacity to repair themselves
Which of the following provide protection for the spinal cord? A. Vertebra B. meninges C. Cerebrospinal fluid D. A and B are correct E. A, B and C are correct
E. A, Band C are correct
Which of the following is NOT true?
A. The dura mater is composed of dense irregular connective tissue
B. the epidural space is filled with interstitial fluid
C. The arachnoid mater is the most vascular meninx
D. The sibarachnoid space is filled with cerebrospinal fluid
E. the pia matter adheres directly to the spinal cord (and brain)
C. The arachnoid mater is the most vascular meninx
The spinal nerves
A. Allow communication between the spinal cord and the brain
B. have posterior sensory roots
C. Have anterior root ganglia containing cell bodies of motor neurons
D. Have posterior motor roots
E. exit the vertebral column anteriorly between the intervertebral discs and the vertebral bodies
B. have posterior sensory roots
Spinal nerves are
A. Identified based in region and level of the vertebral column from which they emerge
B. are mixed nerves containing both motor and sensory fibers
C. Are all aligned with their corresponding vertebrae
D. A and B are correct
E. A, B and C are correct
D. A and B are correct
There are \_\_\_\_\_\_ enlargements of the spinal cord where nerves supplying the extremities enter and leave A. Two B. three C. Four D. Five E. six
A. Two
The spinal cord
A.controls the reticular activating system
B. stores reflexive memory
C. Forms memory engrams
D. Links the peripheral nervous system to the brain
E. is characterised by conscious activities
D. Links the peripheral nervous system to the brain
