Nervous System
Visual stimuli travel from the eyes to the part of the brain that interprets them via the “visual pathway”. Which of the following list of structures is the pathway in correct order from the eyes?
Optic nerves, optic chiasma, lateral geniculate body, optic radiation, pri-mary visual cortex
Optic radiation, lateral geniculate body, optic nerves, primary visual cortex, optic chiasma
Optic chiasma, optic nerves, primary visual cortex, optic radiation, lateral geniculate body
Primary visual cortex, optic radiation, optic chiasma, lateral geniculate body, optic nerves
Optic nerves, optic chiasma, lateral geniculate body, optic radiation, pri-mary visual cortex
The optic nerves leave the eyes and the signal eventually reaches the primary visual cortex in the occipital lobe.
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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
The inner ear (or internal ear) may be described as a series of tubes. What are the tubes filled with?
A. Air
B. Perilymph
C. Endolymph
D. Perilymph and endolymph
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
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