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PNB 2274 Exam 3 (Chen) Practice Questions and Answers $11.49   Add to cart

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PNB 2274 Exam 3 (Chen) Practice Questions and Answers

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PNB 2274 Exam 3 (Chen) Practice Questions and Answers What protects the brain? (3 things) - Ans:-1. The bones of the cranium 2. The cranial meninges 3. Cerebrospinal Fluid (CSF) What are the cranial meninges? (List superficial to deep) - Ans:-1. Dura mater 2. Arachnoid 3. Pia mater Dura Mat...

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  • October 24, 2024
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  • Questions & answers
  • PNB 2274
  • PNB 2274
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PNB 2274 Exam 3 (Chen) Practice
Questions and Answers


What protects the brain? (3 things) - Ans:✔✔-1. The bones of the cranium


2. The cranial meninges


3. Cerebrospinal Fluid (CSF)


What are the cranial meninges? (List superficial to deep) - Ans:✔✔-1. Dura mater


2. Arachnoid


3. Pia mater


Dura Mater - Ans:✔✔-- "Hard mother"


- 2 fibrous layers


- Space between layers contains tissue fluids, blood vessels and lymphatic system!


Arachnoid - Ans:✔✔-- Arachnoid membrane: Epithelial layer


- Subarachnoid space

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- Does not follow the brain's underlying folds


Pia Mater - Ans:✔✔-- Follows the brain's underlying folds


- Accompanies the branches of cerebral blood vessels


- Protect central nervous system by containing CSF which cushions brain and spine


The Brain receives constant supply of blood regardless of activity - Ans:✔✔-Membrane transporters

move glucose plasma into the brain interstitial fluid


Progressive _____________ leads to confusion, unconsciousness, and death - Ans:✔✔-(Progressive)

*Hypoglycemia*


Oxygen can freely pass across the blood-brain barrier.


True or false. - Ans:✔✔-True


The brain consumes about __________ of the body's glucose. - Ans:✔✔-Half


What arteries supply the brain with blood? (2 answers) - Ans:✔✔-- Internal carotid arteries


- Vertebral arteries


What veins drain blood from the brain, returning it to the heart via the superior vena cava? (1 answer) -

Ans:✔✔-- Internal jugular veins



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Anastomosis - Ans:✔✔-A cross-connection between adjacent channels, tubes, fibers, or other parts of a

network.


Circle of Willis - Ans:✔✔-- A circulatory anastomosis that supplies blood to the brain and surrounding

structures


- It is named after Thomas Willis (1621-1675), an English physician


Collateral Circulation - Ans:✔✔-Is the alternate circulation around a blocked artery or vein via another

path


Blood-Brain Barrier is composed of....(3 answers) - Ans:✔✔--Endothelial cells (tight junctions)


-Basal Lamina


-Astrocyte foot processes


Functions of the BBB - Ans:✔✔-- Limit paracellular solute flux


- Regulate composition and volume of brain interstitial fluid


What is the neurovascular unit composed of? - Ans:✔✔-- Capillaries


- Neurons


- Glial cells



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