Tag: introduction to brain

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Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

Cerebrospinal fluid is present

  1. Beneath the pia mater

  2. Between pia mater and arachnoid mater

  3. Between arachnoid and dura mater

  4. In extra dura mater

  5. Between the dura mater and cranium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cerebrospinal fluid (CSF) is a clear, colorless body fluid found in the brain and spine. It is located in the subarachnoid space between the arachnoid mater and the pia mater. It acts as a cushion for the brain's cortex by providing mechanical and immunological protection to the brain inside the skull. Hence option B is correct.

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

The function of cerebrospinal fluid surrounding CNS is to 

  1. Protect the brain from external jerks
  2. Provide nourishment and ${O _2}$ to the brain

  3. Take away unwanted substance from the brain

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cerebrospinal fluid (CSF) acts as a shock absorber to protect the CNS from mechanical injury. It also facilitates the exchange of nutrients and metabolic waste products between the blood and the brain tissue.

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

The cerebrospinal fluid passes out from the ventricle of medulla oblongata into the space between meninges of brain through

  1. Foramen of Monro

  2. Foramen of magnum

  3. Foramen of Magendie and Luschka

  4. Foramen ovale
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The CSF flows from the fourth ventricle of the medulla oblongata into the subarachnoid space through the median aperture (Foramen of Magendie) and the two lateral apertures (Foramina of Luschka).

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

.......... fluid is found in ventricles of the brain.

  1. Sinovial

  2. Cerebrospinal

  3. Serum

  4. Plasma
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cerebrospinal fluid (CSF),  is an alkaline fluid present in the brain and spinal chord. It is formed primarily, in the ventricles of the brain. It supports the brain and provides lubrication between surrounding bones and the brain and spinal cord. It act as buffer for the cerebrum.
So, the correct answer is option B.

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

The main function of cerebrospinal fluid is

  1. Nourishment of brain and spinal cord

  2. Functioning as cushion against shocks

  3. Keeping the central nervous system moist

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The cavities of the central nervous system are called the ventricles that are lined with the choroid plexus. The choroid plexus is made up of the inserted piamater, blood vessels, the ependymal cells. It is responsible for the formation of the formation of the extracellular fluid called the cerebrospinal fluid which drains the ventricles of the brain and spinal cord. The CSF is responsible for collecting the waste from the interstitial space, distribution of nutrients to the brain and spinal cord, act as shock collector during injuries and moistening of the central nervous system.

Hence, the correct answer is 'All of the above'

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

The function of choroid plexus is

  1. To produce lymph

  2. To produce blood

  3. To produce cerebrospinal fluid

  4. To produce endolymph
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The choroid plexus is made up of the piamater that is merged into the ventricles, blood capillaries and the ependymal cells that are epithelial cells. The ventricles of the brain contain the choroid plexus. Its function is to produce the cerebrospinal fluid (CSF). The CSF flows from the ventricles into the subarachnoid space through the Foramen of Magendie and Foramen of Luschka. Here it is absorbed by the arachnoid villi and secreted into the cranial venous sinus. From the cranial venous sinus, the CSF enters the blood circulation.

Hence, the correct answer is 'To produce cerebrospinal fluid'

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

Fluid present in and around the central nervous system is

  1. Cerebral fluid

  2. Cerebrospinal fluid

  3. Spinal fluid

  4. Tissue fluid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The central nervous system consists of the brain and the spinal cord. The cavities of the central nervous system are called the ventricles that are lined with the choroid plexus. The choroid plexus is made up of the inserted piamater, blood vessels, the ependymal cells. It is responsible for the formation of the formation of the extracellular fluid called the cerebrospinal fluid which drains the ventricles of the brain and spinal cord. The CSF returns to blood via the arachnoid villi.

Hence, the correct answer is 'Cerebrospinal fluid'

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

Which of the following can be regarded functions of the cerebral spinal fluid?

  1. Protection

  2. Circulation

  3. Nerve transmission

  4. Both (a) and (b)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • CSF protects the brain and spinal cord from trauma.
  • CSF supplies nutrients to nervous system tissue.
  • CSF removes waste products from cerebral metabolism.
So, the correct option is 'Both (a) and (b)'.