CNS anatomy

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Questions and Answers

What is the main function of the structure that protects the brain from harmful pathogens and regulates exchanges between blood and brain?

Regulate exchanges of lipid-soluble molecules (correct)
Prevent the entry of all molecules into the brain
Allow the passage of any type of molecule
Provide structural support to the brain

Which lobe of the cerebral cortex is responsible for language processing?

Temporal lobe (correct)
Parietal lobe
Occipital lobe
Frontal lobe

What type of cells are joined by tight junctions in the structure that forms the brain-blood barrier?

Endothelial cells (correct)
Glial cells
White matter cells
Neuronal cells

What is the main function of the corpus callosum?

Connect both hemispheres of the cerebrum together (C) Signup and view all the answers

Which type of matter in the CNS is responsible for information processing?

Grey matter (A) Signup and view all the answers

What is the role of the spinal cord in relation to the brain?

Continuous with narrow central canal of spinal cord (C) Signup and view all the answers

What kind of molecules can pass through the structure that forms the brain-blood barrier?

Lipid-soluble molecules like O2 and CO2 (D) Signup and view all the answers

What is the function of Cerebrospinal fluid (CSF)?

Acts as a shock-absorber and facilitates exchange of materials between neuronal cells and interstitial fluid (C) Signup and view all the answers

Where is Cerebrospinal fluid (CSF) produced?

In the choroid plexuses located in the lateral ventricles, third ventricle, and fourth ventricle (A) Signup and view all the answers

What is the main function of the choroid plexuses in the brain?

Production of cerebrospinal fluid (C) Signup and view all the answers

What is the role of the arachnoid villi in the brain?

Reabsorption of cerebrospinal fluid into the venous blood (A) Signup and view all the answers

How many choroid plexuses are present in the brain?

One in each lateral ventricle, one in the third ventricle, and one in the fourth ventricle (C) Signup and view all the answers

What are the ventricles within the brain?

Cavities within the brain connected to each other, with four present within the CNS (A) Signup and view all the answers

True or false: The cerebrospinal fluid (CSF) is produced by the arachnoid villi.

False (B) Signup and view all the answers

True or false: The choroid plexuses are made up of a single layer of cuboidal to low cylindrical epithelial cells.

True (A) Signup and view all the answers

True or false: The choroid plexuses are located in the lateral ventricles of the brain.

True (A) Signup and view all the answers

True or false: The cerebrospinal fluid circulates in the ventricle system and exits from the base of the brain through the third ventricle.

False (B) Signup and view all the answers

True or false: The meninges consist of three membranes: dura matter, arachnoid matter, and pia matter.

True (A) Signup and view all the answers

True or false: The corpus callosum is composed of 300 million myelinated neurons that connect both hemispheres of the cerebrum together and allow them to communicate.

True (A) Signup and view all the answers

True or false: The cerebral cortex can be divided into 4 major lobes, with each half of the cortex containing these 4 lobes.

True (A) Signup and view all the answers

True or false: The spinal cord is continuous with the narrow central canal of the brain and is highly selective in allowing only lipid-soluble molecules to pass through.

False (B) Signup and view all the answers

True or false: The grey matter in the CNS is responsible for information processing, as it is densely packed with neuronal cell bodies and dendrites.

True (A) Signup and view all the answers

True or false: The structure that forms the brain-blood barrier allows molecules like O2 and CO2 to pass through, as they are lipid-soluble.

True (A) Signup and view all the answers

Flashcards

Brain-Blood Barrier Function

Protects the brain from pathogens and regulates exchanges between blood and brain.

Temporal Lobe Function

Responsible for language processing.