Watch this animation (http://openstaxcollege.org/l/braindevel) to examine the development of the brain, starting with the neural tube. As the anterior end of the neural tube develops, it enlarges into the primary vesicles that establish the forebrain, midbrain, and hindbrain. Those structures continue to develop throughout the rest of embryonic development and into adolescence. They are the basis of the structure of the fully developed adult brain. How would you describe the difference in the relative sizes of the three regions of the brain when comparing the early (25th embryonic day) brain and the adult brain?

Question

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Answer 1

Textbook Question

Chapter 13, Problem 1ILQ

Watch this animation (http://openstaxcollege.org/l/braindevel) to examine the development of the brain, starting with the neural tube. As the anterior end of the neural tube develops, it enlarges into the primary vesicles that establish the forebrain, midbrain, and hindbrain. Those structures continue to develop throughout the rest of embryonic development and into adolescence. They are the basis of the structure of the fully developed adult brain. How would you describe the difference in the relative sizes of the three regions of the brain when comparing the early (25th embryonic day) brain and the adult brain?

Expert Solution & Answer

Summary Introduction

To write:

The differences between in the relative sizes of the three regions of the brain in case of early brain and adult brain.

Introduction:

The brain is the central organ of the central nervous system. The forebrain, the midbrain, and the hindbrain form the three primary portions of the brain during the early development of the central nervous system. The midbrain is associated with the vision, hearing, sleep, temperature control and is divided into the tectum, the cerebral aqueduct, tegmentum, and the basic pedunculi. The forebrain includes the cerebral hemispheres, the thalamus, and the hypothalamus. The hindbrain includes the medulla, pons, and cerebellum.

Explanation of Solution

The primary vesicles form these three basic regions of the brain called the forebrain, midbrain, and the hindbrain. Brain vesicles are the bulge-like structures found in the early development of the neural tube. They form the three primary brain vesicles called the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). In the early brain stages, these three structures are of the same size when they are first established. The midbrain in the adult is smaller than the other two parts, the forebrain and the hindbrain which increase in the size compared to the early brain of the embryonic stage.

Conclusion

Thus, the difference between the early brain parts and the adult brain is in the size of the forebrain and hindbrain increasing in size.

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24) Use the following information to answer the question below. Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined (see table) and used to determine the actual allele frequencies in the population. TT 0.49 Tt 0.42 tt 0.09 Refer to the table above. Is this population in Hardy-Weinberg equilibrium? A) Yes. C) No; there are more homozygotes than expected. B) No; there are more heterozygotes than expected. D) It is impossible to tell.

Answer 2

Textbook Question

Chapter 13, Problem 1ILQ

Watch this animation (http://openstaxcollege.org/l/braindevel) to examine the development of the brain, starting with the neural tube. As the anterior end of the neural tube develops, it enlarges into the primary vesicles that establish the forebrain, midbrain, and hindbrain. Those structures continue to develop throughout the rest of embryonic development and into adolescence. They are the basis of the structure of the fully developed adult brain. How would you describe the difference in the relative sizes of the three regions of the brain when comparing the early (25th embryonic day) brain and the adult brain?

Expert Solution & Answer

Summary Introduction

To write:

The differences between in the relative sizes of the three regions of the brain in case of early brain and adult brain.

Introduction:

The brain is the central organ of the central nervous system. The forebrain, the midbrain, and the hindbrain form the three primary portions of the brain during the early development of the central nervous system. The midbrain is associated with the vision, hearing, sleep, temperature control and is divided into the tectum, the cerebral aqueduct, tegmentum, and the basic pedunculi. The forebrain includes the cerebral hemispheres, the thalamus, and the hypothalamus. The hindbrain includes the medulla, pons, and cerebellum.

Explanation of Solution

The primary vesicles form these three basic regions of the brain called the forebrain, midbrain, and the hindbrain. Brain vesicles are the bulge-like structures found in the early development of the neural tube. They form the three primary brain vesicles called the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). In the early brain stages, these three structures are of the same size when they are first established. The midbrain in the adult is smaller than the other two parts, the forebrain and the hindbrain which increase in the size compared to the early brain of the embryonic stage.

Conclusion

Thus, the difference between the early brain parts and the adult brain is in the size of the forebrain and hindbrain increasing in size.

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Answer 3

Textbook Question

Chapter 13, Problem 1ILQ

Watch this animation (http://openstaxcollege.org/l/braindevel) to examine the development of the brain, starting with the neural tube. As the anterior end of the neural tube develops, it enlarges into the primary vesicles that establish the forebrain, midbrain, and hindbrain. Those structures continue to develop throughout the rest of embryonic development and into adolescence. They are the basis of the structure of the fully developed adult brain. How would you describe the difference in the relative sizes of the three regions of the brain when comparing the early (25th embryonic day) brain and the adult brain?

Expert Solution & Answer

Summary Introduction

To write:

The differences between in the relative sizes of the three regions of the brain in case of early brain and adult brain.

Introduction:

The brain is the central organ of the central nervous system. The forebrain, the midbrain, and the hindbrain form the three primary portions of the brain during the early development of the central nervous system. The midbrain is associated with the vision, hearing, sleep, temperature control and is divided into the tectum, the cerebral aqueduct, tegmentum, and the basic pedunculi. The forebrain includes the cerebral hemispheres, the thalamus, and the hypothalamus. The hindbrain includes the medulla, pons, and cerebellum.

Explanation of Solution

The primary vesicles form these three basic regions of the brain called the forebrain, midbrain, and the hindbrain. Brain vesicles are the bulge-like structures found in the early development of the neural tube. They form the three primary brain vesicles called the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). In the early brain stages, these three structures are of the same size when they are first established. The midbrain in the adult is smaller than the other two parts, the forebrain and the hindbrain which increase in the size compared to the early brain of the embryonic stage.

Conclusion

Thus, the difference between the early brain parts and the adult brain is in the size of the forebrain and hindbrain increasing in size.

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Answer 4

Textbook Question

Chapter 13, Problem 1ILQ

Watch this animation (http://openstaxcollege.org/l/braindevel) to examine the development of the brain, starting with the neural tube. As the anterior end of the neural tube develops, it enlarges into the primary vesicles that establish the forebrain, midbrain, and hindbrain. Those structures continue to develop throughout the rest of embryonic development and into adolescence. They are the basis of the structure of the fully developed adult brain. How would you describe the difference in the relative sizes of the three regions of the brain when comparing the early (25th embryonic day) brain and the adult brain?

Expert Solution & Answer

Summary Introduction

To write:

The differences between in the relative sizes of the three regions of the brain in case of early brain and adult brain.

Introduction:

The brain is the central organ of the central nervous system. The forebrain, the midbrain, and the hindbrain form the three primary portions of the brain during the early development of the central nervous system. The midbrain is associated with the vision, hearing, sleep, temperature control and is divided into the tectum, the cerebral aqueduct, tegmentum, and the basic pedunculi. The forebrain includes the cerebral hemispheres, the thalamus, and the hypothalamus. The hindbrain includes the medulla, pons, and cerebellum.

Explanation of Solution

The primary vesicles form these three basic regions of the brain called the forebrain, midbrain, and the hindbrain. Brain vesicles are the bulge-like structures found in the early development of the neural tube. They form the three primary brain vesicles called the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). In the early brain stages, these three structures are of the same size when they are first established. The midbrain in the adult is smaller than the other two parts, the forebrain and the hindbrain which increase in the size compared to the early brain of the embryonic stage.

Conclusion

Thus, the difference between the early brain parts and the adult brain is in the size of the forebrain and hindbrain increasing in size.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

To write:

The differences between in the relative sizes of the three regions of the brain in case of early brain and adult brain.

Introduction:

The brain is the central organ of the central nervous system. The forebrain, the midbrain, and the hindbrain form the three primary portions of the brain during the early development of the central nervous system. The midbrain is associated with the vision, hearing, sleep, temperature control and is divided into the tectum, the cerebral aqueduct, tegmentum, and the basic pedunculi. The forebrain includes the cerebral hemispheres, the thalamus, and the hypothalamus. The hindbrain includes the medulla, pons, and cerebellum.

Explanation of Solution

The primary vesicles form these three basic regions of the brain called the forebrain, midbrain, and the hindbrain. Brain vesicles are the bulge-like structures found in the early development of the neural tube. They form the three primary brain vesicles called the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). In the early brain stages, these three structures are of the same size when they are first established. The midbrain in the adult is smaller than the other two parts, the forebrain and the hindbrain which increase in the size compared to the early brain of the embryonic stage.

Conclusion

Thus, the difference between the early brain parts and the adult brain is in the size of the forebrain and hindbrain increasing in size.

Answer 8

Expert Solution & Answer

Summary Introduction

To write:

The differences between in the relative sizes of the three regions of the brain in case of early brain and adult brain.

Introduction:

The brain is the central organ of the central nervous system. The forebrain, the midbrain, and the hindbrain form the three primary portions of the brain during the early development of the central nervous system. The midbrain is associated with the vision, hearing, sleep, temperature control and is divided into the tectum, the cerebral aqueduct, tegmentum, and the basic pedunculi. The forebrain includes the cerebral hemispheres, the thalamus, and the hypothalamus. The hindbrain includes the medulla, pons, and cerebellum.

Explanation of Solution

The primary vesicles form these three basic regions of the brain called the forebrain, midbrain, and the hindbrain. Brain vesicles are the bulge-like structures found in the early development of the neural tube. They form the three primary brain vesicles called the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). In the early brain stages, these three structures are of the same size when they are first established. The midbrain in the adult is smaller than the other two parts, the forebrain and the hindbrain which increase in the size compared to the early brain of the embryonic stage.

Conclusion

Thus, the difference between the early brain parts and the adult brain is in the size of the forebrain and hindbrain increasing in size.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

To write:

The differences between in the relative sizes of the three regions of the brain in case of early brain and adult brain.

Introduction:

The brain is the central organ of the central nervous system. The forebrain, the midbrain, and the hindbrain form the three primary portions of the brain during the early development of the central nervous system. The midbrain is associated with the vision, hearing, sleep, temperature control and is divided into the tectum, the cerebral aqueduct, tegmentum, and the basic pedunculi. The forebrain includes the cerebral hemispheres, the thalamus, and the hypothalamus. The hindbrain includes the medulla, pons, and cerebellum.

Answer 12

Explanation of Solution

The primary vesicles form these three basic regions of the brain called the forebrain, midbrain, and the hindbrain. Brain vesicles are the bulge-like structures found in the early development of the neural tube. They form the three primary brain vesicles called the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). In the early brain stages, these three structures are of the same size when they are first established. The midbrain in the adult is smaller than the other two parts, the forebrain and the hindbrain which increase in the size compared to the early brain of the embryonic stage.

Answer 13

Conclusion

Thus, the difference between the early brain parts and the adult brain is in the size of the forebrain and hindbrain increasing in size.

Answer 14

Ch. 13 - Watch this animation...Ch. 13 - Watch this video...Ch. 13 - Watch this video...Ch. 13 - Watch this video...Ch. 13 - Watch this video...Ch. 13 - Compared with the nearest evolutionary relative,...Ch. 13 - Watch this animation...Ch. 13 - Watch this video...Ch. 13 - Watch this animation...Ch. 13 - Figure 13.20 If you zoom in on the DRG, you can...

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