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Ch. 12 The Central Nervous System
Marieb - Human Anatomy & Physiology 11th Edition
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Marieb, Hoehn 11th EditionCh. 12 The Central Nervous System문제 3
12장, 문제 3

Cerebrospinal fluid is formed by
a. Arachnoid granulations
b. Dura mater
c. Choroid plexuses
d. All of these

검증된 단계별 안내
1
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.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

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.
추천 영상:
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.
추천 영상:
3:56
Vascular 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.
추천 영상:
5:59
Fibrous Layer
관련 실천
교과서 질문

Fiber tracts that allow neurons within the same cerebral hemisphere to communicate are:

a. Association fibers

b. Commissures

c. Projection fibers

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교과서 질문

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

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교과서 질문

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

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교과서 질문

The primary motor cortex, Broca's area, and the premotor cortex are located in which lobe?

a. Frontal

b. Parietal

c. Temporal

d. Occipital

1474
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교과서 질문

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

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