1)Meninges are ______.
A. Bacterial infections of the CNS
B. Connective tissue coverings around the central nervous system
C. Synapses between CNS neurons and the post-synaptic membranes of other neurons
D. Non-neuronal cells in the CNS that help regulate ionic concentrations of their ECF
(my guess is B)
2)The dorsal root ganglia contain _______.
A. Cell bodies of sensory neurons
B. Ascending sensory tracts
C. Cell bodies of somatic motor neurons
D. Cell bodies of autonomic neurons
E. Descending motor tracts
(I had A)
3)The purpose of the blood-brain barrier is to ____.
A. Keep oxygen levels high within the brain
B. Keep glucose levels high within the brain
C. Cushion the brain during physical impact
D. Keep the levels of brain neurohormones high within the brain
E. Keep potentially harmful substances in the blood away from the brain
(I had B)
4)Which of the following ions has similar concentrations in plasma and cerebrospinal fluid?
A. Cl-
B. Na+
C. K+
D. HCO3+
E. H+
5)Consciousness and sleep-wake functions reside in the _____ of the brain.
A. Limbic system
B. Cerebral cortex
C. Hypothalamus
D. Basal ganglia
E. Reticular formation
6)Control of homeostasis resides in the _____ of the brain.
A. Limbic system
B. Medulla oblongata
C. Hypothalamus
D. Basal ganglia
E. Reticular formation
7)The blood-brain barrier is ________.
A. A layer of thin epithelial cells surrounding the capillaries
B. A layer of impermeable basal lamina
C. A layer of connective tissue surrounding the capillaries
D. Tight junctions connecting endothelial cells
E. Tight junctions connecting astrocytes surrounding the capillaries
(I had E)
8)During embryonic development, the neural tissue rolls up into a tube, forming a hollow neural tube that will form the _______.
A. Brain
B. Peripheral nervous system
C. Central nervous system
D. Autonomic nervous system
E. Spinal cord
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