Nervous System
The inner ear (or internal ear) may be described as a series of tubes. What are the tubes filled with?
Air
Perilymph
Endolymph
Perilymph and endolymph
Perilymph and endolymph
Both perilymph and endolymph are contained in the scalae of the cochlea and the semi-circular canals of the labyrinth. The middle ear contains air.
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In the spinal cord, the ascending tracts contain:A. White matter and transmit sensory information
B. White matter and transmit motor commands
C. Grey matter and transmit sensory information
D. Grey matter and transmit motor commands
Which sequence of ion movements describes the action potential?
A. Na+ move out of cell then K+ move in
B. K+ move in to cell then Na+ move out
C. K+ move out of cell then Na+ move in
D. Na+ move into cell then K+ move out
Which of the following substances is prevented from entering the brain by the blood-brain barrier?
A. Glucose
B. Nicotine
C. Pharmaceuticals
D. Alcohol
There are three ossicles in the middle ear. What are their names?
A. Malleus, stapedius, otolith
B. Cochlea, stapes, incus
C. Stapedius, ampulla, cochlea
D. Malleus, stapes, incus
What characterises a spinal reflex?
A. It involves rapid processing by the brain and a predictable response.
B. It is a predictable, unlearned and involuntary motor response.
C. It is a rapid, predictable, learned and involuntary motor response.
D. It involves stimulation of a motor neurone by a sensory neurone that originates within the CNS.
A multipolar neuron has more than one of what?
A. Dendrite attached to the cell body
B. Axon attached to the cell body
C. Synaptic terminal attached to the axon
D. Cell body
Which of the following are NOT part of the cerebral cortex?
A. Motor areas, sensory areas and association areas
B. Precentral gyrus and postcentral gyrus
C. White matter and basal nuclei
D. The lateral ventricles and the thalamus
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