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Ch. 49 - Nervous Systems
Chapter 49, Problem 4

The cerebral cortex plays a major role in (A)emotional memory. (B)hand-eye coordination. (C)circadian rhythm. (D)breath holding.

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Identify the functions generally associated with the cerebral cortex, which include higher brain functions such as thought, reasoning, sensation, and voluntary muscle movement.
Analyze each option to see if it aligns with the known functions of the cerebral cortex. Emotional memory involves the processing and storage of emotional experiences, which is linked to the limbic system but also involves cortical areas for complex processing.
Consider hand-eye coordination, which involves sensory inputs and motor outputs that are processed through various cortical areas including the motor cortex and sensory cortices.
Evaluate the role of the cerebral cortex in circadian rhythms, which are primarily regulated by the hypothalamus, a structure not in the cerebral cortex.
Assess the involvement of the cerebral cortex in breath holding, which is primarily controlled by the brainstem, not the cerebral cortex.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Cerebral Cortex Functions

The cerebral cortex is the outer layer of the brain, responsible for many higher-order functions, including sensory perception, cognition, and motor control. It is divided into different regions, each associated with specific functions, such as the frontal lobe for decision-making and the occipital lobe for visual processing.
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Emotional Memory

Emotional memory refers to the ability to remember past experiences that are associated with emotional responses. The amygdala, a structure within the limbic system, plays a crucial role in processing emotions and is closely linked to the cerebral cortex, particularly in how emotions influence memory formation and retrieval.
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Motor Coordination

Motor coordination involves the ability to execute smooth, controlled movements, which is essential for tasks like hand-eye coordination. While the cerebral cortex is involved in planning and executing movements, the cerebellum also plays a significant role in fine-tuning these motor skills, ensuring accuracy and timing.
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Related Practice
Textbook Question

Activation of the parasympathetic branch of the autonomic nervous system a. increases heart rate. b. enhances digestion. c. triggers release of epinephrine. d. causes conversion of glycogen to glucose.

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Textbook Question

Which of the following structures or regions is correctly paired with its function?


a. limbic system—motor control of speech

b. medulla oblongata—homeostatic control

c. cerebrum—coordination of movement and balance

d. amygdala—short-term memory

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Textbook Question

Patients with damage to Wernicke's area have difficulty a. coordinating limb movement. b. generating speech. c. recognizing faces. d. understanding language.

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Textbook Question

After suffering a stroke, a patient can see objects anywhere in front of him but pays attention only to objects in his right field of vision. When asked to describe these objects, he has difficulty judging their size and distance. What part of the brain was likely damaged by the stroke? a. the left frontal lobe b. the right frontal lobe c. the right parietal lobe d. the corpus callosum

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Textbook Question

Injury localized to the hypothalamus would most likely disrupt a. regulation of body temperature. b. short-term memory. c. executive functions, such as decision making. d. sorting of sensory information.

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Textbook Question

DRAW IT The reflex that pulls your hand away when you prick your finger on a sharp object relies on a neuronal circuit with two synapses in the spinal cord. (a) Using a circle to represent a cross section of the spinal cord, draw the circuit. Label the types of neurons, the direction of information flow in each, and the locations of synapses.

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