Sensory impulses ending in what part of the CNS trigger imprecise or "crude" sensation awareness?
Thalamus
Cerebellum
Brainstem
Cerebral cortex
The Correct Answer is A
A. Thalamus: The thalamus acts as a relay station where we first become aware of a sensation in a "crude" or unrefined way before it is processed for detail elsewhere.
B. Cerebellum: The cerebellum processes proprioception and coordination but does not produce conscious sensory awareness.
C. Brainstem: The brainstem handles vital reflexes and signal conduction but is not the center for conscious sensory awareness.
D. Cerebral cortex: The cortex provides "fine" or precise sensory discrimination (exactly where and what a sensation is), which is the opposite of "crude" awareness.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. only one parent is needed: This is an advantage of asexual reproduction, as it is faster and less energy-intensive.
B. all the offspring are identical: This is a feature of asexual reproduction, but it is often a disadvantage because it makes the population vulnerable to environmental changes.
C. there is greater diversity in the offspring: Sexual reproduction reshuffles genes, creating unique individuals who are more likely to survive changing environments.
D. more offspring are produced: Asexual reproduction (like bacteria dividing) typically produces more offspring much faster than sexual reproduction.
Correct Answer is B
Explanation
A. increased residual volume: Excessive fluid in the pleural space (pleural effusion) compresses the lung, making it harder to keep air inside, usually not increasing the residual volume.
B. decreased vital capacity: The fluid occupies space in the chest cavity and prevents the lung from fully expanding, the maximum amount of air a person can inhale and exhale (vital capacity) is reduced.
C. increased functional reserve volume: Lung compression typically reduces all functional volumes rather than increasing them.
D. decreased tidal volume: While tidal volume might eventually decrease, the primary clinical indicator of restrictive lung pressure from fluid is the decrease in total Vital Capacity.
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