Textbook Question
Fiber tracts that allow neurons within the same cerebral hemisphere to communicate are:
a. Association fibers
b. Commissures
c. Projection fibers
1
views
Ch. 12 The Central Nervous System
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch. 1 The Human Body: An Orientation25
- Ch. 2 Chemistry Comes Alive24
- Ch. 3 Cells: The Living Units24
- Ch. 4 Tissue: The Living Fabric19
- Ch. 5 The Integumentary System12
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System25
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue23
- Ch. 12 The Central Nervous System25
- Ch. 13 The Peripheral Nervous System and Reflex Activity30
- Ch. 14 The Autonomic Nervous System16
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System26
- Ch. 17 Blood27
- Ch. 18 The Cardiovascular System: The Heart25
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues16
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Not the one you use?Change textbook
Chapter 12, Problem 3
Cerebrospinal fluid is formed by
a. Arachnoid granulations
b. Dura mater
c. Choroid plexuses
d. All of these
Verified step by step guidance1
Understand the role of cerebrospinal fluid (CSF) in the central nervous system, which is to cushion the brain and spinal cord, provide nutrients, and remove waste.
Identify the structures involved in the production and circulation of CSF. The main site of CSF formation is the choroid plexuses, which are networks of specialized ependymal cells located in the ventricles of the brain.
Recognize that arachnoid granulations are involved in the absorption of CSF into the venous system, not its formation.
Know that the dura mater is a tough outer membrane surrounding the brain and spinal cord, but it does not produce CSF.
Conclude that among the options given, the choroid plexuses are responsible for the formation of cerebrospinal fluid.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
3mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Cerebrospinal Fluid (CSF)
CSF is a clear, colorless fluid that cushions the brain and spinal cord, providing mechanical protection and nutrient transport. It circulates through the ventricles and subarachnoid space, maintaining a stable environment for the central nervous system.
Recommended video:
Guided course
3:33
Serous Cavity and Fluid
Choroid Plexuses
Choroid plexuses are networks of specialized ependymal cells located in the brain's ventricles. They are primarily responsible for producing cerebrospinal fluid by filtering blood plasma and secreting it into the ventricular system.
Recommended video:
Guided course
3:56Vascular Layer of the Eyeball Example 1
Arachnoid Granulations and Dura Mater
Arachnoid granulations are structures that absorb CSF into the venous bloodstream, not produce it. The dura mater is a tough outer meningeal layer providing protection but does not form CSF. Understanding their roles helps distinguish CSF production from absorption.
Recommended video:
Guided course
5:59Fibrous Layer
Related Practice
Textbook Question
The innermost layer of the meninges, delicate and adjacent to the brain tissue, is the
a. Dura mater
b. Corpus callosum
c. Arachnoid mater
d. Pia mater
1
views
Textbook Question
Choose the correct term from the key to respond to the statements describing various brain areas.
Key:
a. Cerebellum
b. Corpora quadrigemina
c. Corpus callosum
d. Striatum
e. Hypothalamus
f. Medulla
g. Midbrain
h. Pons
i. Thalamus
________ (1) basal nuclei involved in fine control of motor activities
________ (2) region where there is a crossover of fibers of descending pyramidal tracts
________ (3) control of temperature, autonomic nervous system reflexes, hunger, and water balance
________ (4) houses the substantia nigra and cerebral aqueduct
________ (5) relay stations for visual and auditory stimuli input; found in midbrain
________ (6) houses vital centers for control of the heart, respiration, and blood pressure
________ (7) brain area through which all the sensory input is relayed to get to the cerebral cortex
________ (8) brain area most concerned with equilibrium, body posture, and coordination of motor activity
Textbook Question
The primary motor cortex, Broca's area, and the premotor cortex are located in which lobe?
a. Frontal
b. Parietal
c. Temporal
d. Occipital
2
views
Textbook Question
Destruction of the ventral horn cells of the spinal cord results in loss of
a. Integrating impulses
b. Sensory impulses
c. Voluntary motor impulses
d. All of these
1
views