Textbook Question
A new diet wonder drug is designed to block the release of orexins. How might this cause weight loss? Predict the potential adverse effects that might come from blocking orexin release.
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Ch. 12 The Central Nervous System
Erin C. Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomous Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Nutrition and Metabolism7
- Ch. 24 The Urinary System39
- Ch. 25 Fluids, Electrolytes, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Erin C. Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Not the one you use?Change textbook
Chapter 12, Problem 2a
Mark the following statements about the brain as true or false. If a statement is false, correct it to make a true statement.
Humans use only 10% of their brains.
Verified step by step guidance1
Step 1: Understand the claim in the statement: The statement 'Humans use only 10% of their brains' is a common myth and needs to be evaluated based on scientific evidence.
Step 2: Recall the basic anatomy and physiology of the brain: The brain is a highly active organ, and modern neuroimaging techniques (like fMRI and PET scans) show that nearly all parts of the brain have some level of activity, even during rest.
Step 3: Consider the functional roles of different brain regions: Different areas of the brain are responsible for various functions, such as motor control, sensory processing, memory, emotions, and decision-making. These functions require the coordinated activity of multiple brain regions.
Step 4: Correct the false statement: The corrected statement should be 'Humans use virtually all parts of their brains, and different regions are active at different times depending on the task or activity.'
Step 5: Reflect on the importance of dispelling myths: Understanding the full utilization of the brain helps appreciate its complexity and the importance of maintaining brain health through proper nutrition, exercise, and mental stimulation.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Brain Utilization Myth
The idea that humans only use 10% of their brains is a myth. Neuroimaging studies show that virtually all parts of the brain have a known function and are active at different times, depending on the activity being performed. This misconception likely arose from misinterpretations of neurological research and has been perpetuated in popular culture.
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Major Regions of the Brain
Neuroplasticity
Neuroplasticity refers to the brain's ability to reorganize itself by forming new neural connections throughout life. This adaptability allows the brain to compensate for injury, learn new information, and adjust to new experiences. Understanding neuroplasticity is crucial for recognizing how the brain can be more dynamic than the 10% myth suggests.
Brain Functionality
Different regions of the brain are responsible for various functions, such as movement, sensation, emotion, and cognition. The brain operates as a complex network where all areas contribute to overall functioning, debunking the notion that only a small fraction is utilized. This understanding highlights the importance of the entire brain in daily activities and cognitive processes.
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Related Practice
Textbook Question
Which of the following statements about the general functions of the nervous system is false?
a. The three primary functions of the nervous system include sensory, integrative, and motor functions.
b. The integrative functions of the nervous system are its processing functions.
c. Sensory stimuli are transmitted on sensory efferent fibers to a sensory receptor.
d. Motor functions are carried out by fibers that carry signals to an effector.
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Textbook Question
The central nervous system is responsible for:
a. Integrative functions
b. Sensory functions
c. Motor functions
d. Both b and c are correct
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Textbook Question
Mark the following statements about the brain as true or false. If a statement is false, correct it to make a true statement.
The four main components of the brain are the cerebrum, the diencephalon, the cerebellum, and the brainstem.
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Textbook Question
Mark the following statements about the brain as true or false. If a statement is false, correct it to make a true statement.
The right and left lateral ventricles are the largest of the ventricles in the brain and are located in the diencephalon.
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Textbook Question
Mark the following statements about the brain as true or false. If a statement is false, correct it to make a true statement.
The cerebrum is responsible for our basic, involuntary functions and reflexes.
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