Nervous System
What is the function of the reticular formation (or reticular activating system) of the brain?
It is the emotional or affective part of the brain.
It allows emotion to override logic and vice versa.
It controls our circadian rhythm.
It receives and integrates all incoming sensory input.
It receives and integrates all incoming sensory input.
The reticular formation is located in the brainstem, and so all sensory information from receptors for pressure touch, pain and limb position pass through here. Vision and sound stimulate the reticular formation. Choices A and B refer to the limbic system. Our circadian rhythm involves the pineal gland.
It receives and integrates all incoming sensory input. The reticular formation is located in the brainstem, and so all sensory information from receptors for pressure touch, pain and limb position pass through here. Vision and sound stimulate the reticular formation. Choices A and B refer to the limbic system. Our circadian rhythm involves the pineal gland.
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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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