To tell:
Why it is important that the cells forming the blood vessels of the spinal cord and brain should be tight against one another by forming a blood-brain barrier.
Introduction:
The blood vessels in the brain and spinal cord are lined on the inside with specialized endothelial cells. These endothelial cells are stuck together very tightly and forming 'tight junctions'.
Explanation of Solution
The spinal cord extends down from the brain to the lumbar region (lower back). Below lumbar region, a package of nerves called the cauda equina is seen. This bundle of nerves resembles the tail of a horse. The dura mater is a tough fibrous sheath which provides a flexible and strong covering for the delicate organs of the central nervous system (CNS). It acts as a barrier and prevents the spread of infections from the bones. The arachnoid mater is located deep to the dura mater is the arachnoid mater which contains many branching fibers, which gives the appearance of a spider web. The subarachnoid space is the cavities found in between the arachnoid mater fibers. Pia mater is the internal layer, which is pressed near to the spinal cord and brain. Blood vessels situated on the top of the pia mater supplies the central nervous system with blood. These blood vessel walls are composed of tightly packed cells that form the blood-brain barrier, thereby preventing the entry of microbes and other large molecules into the subarachnoid space. So the infections of blood do not spread easily to the CNS.
It is important that the cells that are involved in the formation of the blood vessels of the spinal cord and brain should be tight against with each other, forming a blood-brain barrier to prevent the entry of microbes from blood to subarachnoid space and spread the infection to the CNS.
Want to see more full solutions like this?
Chapter 20 Solutions
Microbiology with Diseases by Body System (5th Edition)
- Which statement is true regarding the nervous system? a) Damaged myelin on an axon has no effect with its ability to transmit an action potential b) Depolarization is the reduction of the membrane potential; going from negative to a more positive charge c) Neuroglia cells are only responsible for providing immunity to the nervous cells d) Neurons can communicate with other cells without the use of neurotransmittersarrow_forwardWhy is it likely that your doctor might test you for meningitis if your neck is stiff and in pain (in addition to other symptoms)? Neck stiffness occurs when the meninges swell because the meninges and the muscles of your neck are connected Having a fever from meningitis can cause a swelling of the tissue in the neck When your circulation decreases as a result of meningitis, your neck doesn’t get enough blood flow The virus or bacteria will enter your neck muscles firstarrow_forward1) Ahh! COVID Zombies are attacking us and we have to run for our lives! This means our _________ is activated. Group of answer choices Sympathetic nervous system Parasympathetic nervous system Endocrine system Immune system 2) ou walked into your little sister’s room and it smelled strongly of marijuana smoke. You noticed it right away. After a few minutes, though, you stopped noticing the smell. This best illustrates: Group of answer choices Priming Transduction Schemas Sensory adaptationarrow_forward
- Why is the function of the cell significant in the study of pathophysiology of diseases?Why is the function of the cell significant in the study of pathophysiology of diseases?arrow_forwardQuinolones and fluroquinolones affect cell membrane integrity? True or false.arrow_forwardCellular disarray in the nerve cells of a person with schizophrenia means that the nerve cells appear: Question 5 options: a) Smaller b) Larger c) Organized d) Disorganizedarrow_forward
- Give the letters for the side groups that are likely to interact strongly with blood plasm NH, NH, CH3 NH, H-C-C HN' H-C-C-C-C CH3 H-C-C--C-C A. HN-C NH3 NH, H-C-C-OH H-C-C- -OH H-C-C NH, NH, H-C-C- H-C-C-C-C-C-NH,arrow_forwardplease answer 15,16,17arrow_forwardTopic: HeLa Cells and the Ethical Considerations of Medical Research Watch the following video called "Cracking the Code of Life" (https://fod.infobase.com/OnDemandEmbed.aspx?lti=1&token=30037&wID=97629&loid=0&w=400&h=300) and also "Immortal Cells"(https://fod.infobase.com/OnDemandEmbed.aspx?lti=1&token=145475&wID=97629&loid=496678&w=400&h=300 ) then answer the following question with evidence from the film to support the question. Also, here is info from Johns Hopskins on the case : (https://www.hopkinsmedicine.org/henrietta-lacks/importance-of-hela-cells) 1) In one paragraph, in your own opinion, explain what are 3 things youv'e learned about the Henrietta Lacks case that relate to the learning objective? (To apply ethical considerations to understanding consent to use one's genomic material for medical research.) 2) In one paragraph, in your own opinion, explain how do you feel about private corporations making money off patenting parts of…arrow_forward
- The classical sign calor, associated with inflammation, is the result of what physiological event from the release of cytokines? 1) Dilation of blood vessels O 2) Cytokines affecting the hypothalamus O 3) Influx of fluid into the infected area 4) Cytokine recruitment of a large number of phagocytes to the areaarrow_forwardThe nerve impulse travels only in one direction, give a reason?arrow_forwardWhich of the following is a substance in the body that facilitates the transmission of pain signals? A) Histamine B) Prostaglandin C) Serotonin D) All of the abovearrow_forward
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage LearningBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning