Essay

Unit 12 - Learning aim D: Understand how the human body responds to diseases and infections

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Module
Unit 12 - Diseases and Infections

Institution
PEARSON (PEARSON)

This assignment contains: Pass: Explain the components of the specific and the non-specific defences, in protecting the body. Merit: Compare the roles of the specific and non-specific defence mechanisms in the human body. Distinction: Evaluate the roles of the cell-mediated and h...

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Uploaded on March 24, 2022
Number of pages 11
Written in 2021/2022
Type Essay
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unit 12 learning aim d
unit 12 assignment 4
btec applied science level 3
learning aim d understand how the human body responds to diseases and infections

kan6928484 Member since 4 year 422 documents sold

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Unit 12: Diseases and Infection

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Date:

Diseases and Infection

Established ias ian iinterconnected inetwork ithat ifunctions ito ipreserve iits ihost iorganism
i from iinnumerable idisease, ias iwell ias ivarious ipathogens, ithe iimmune isystem ican ibe
i subdivided iinto itwo igroups. iThe iSpecific iImmune iResponse iand ithe iInnate iImmune
i Response. i

Compared ito ithe iSpecific iImmune iSystem iResponse, ithe iInnate iResponse iSystem
i is isaid ito ibe ithe ifirst iline iof idefence. iThis iis idue ito ithe ifact ithat iits imechanisms
i are iactivated ialmost iimmediately ior iwithin ihours iof ia ipathogen’s iinvasion iinto ithe
i organism. iFurthermore, ithe isystem iwill ipresent iitself ionce ithe iorganism iis iborn,
i as iit ihas ievolved ito iaid ithe iorganism iin iterms iof iprotection ifrom imultiples
i infectious iagents, iinclusive iof i
a. Fungi
b. Viruses
c. Bacteria
d. Parasites i

Comparatively, ithe iSpecific iImmune iResponse iwill itake imore itime ias iit iis iacquired
i and itherefore ihas ito idevelop iover ione’s ilifetime. iThe iInnate iResponse iSystem iis
i comprised iof ithree ilines iof idefence iagainst iforeign iantigens:

Chemical iBarriers
Chemical ibarriers ifunction ito ieliminate ipathogens ion ithe iexterior iof ithe ibody, iat
i its iopenings, isuch ias ithe imouth iand ion iinterior ibody ilinings. i

COMPONENTS FUNCTIONS

Lysozyme Lysozyme iis ian ienzyme iproduced iin
itears, isweat, iand isaliva ithat ibreaks

idown icell iwalls iand iacts ias ian

iantibiotic iby ikilling ibacteria.

Gastric iJuice Acids iin ithe istomach idestroy ibacteria
i and itoxins

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, COMPONENTS FUNCTIONS

Hyaluronic iacid An igelatinous isubstance, ihyaluronic
i acid islows ithe ispread iof
i microorganisms ithat ican iharm ithe
i body
Hydrochloric iAcid Eliminates ibacteria iand iviruses iin ithe
i stomach, iprotecting iyour ibody ifrom
i infection.

Physical iBarriers
Also ireferred ito ias ia iMechanical iBarriers, iPhysical iBarriers ioperate ito iblock
i pathogens ifrom ientering ithe ibody.

COMPONENTS FUNCTIONS

Cilia Cilia ilines ithe iupper irespiratory itract
i and itraps iand ipropels iinhaled idebris
i to ithe ithroat iso iit ican iexit ithe ibody
i more iquickly.

Defecation i Expels imicroorganisms ivia ibowel
i movements iand ivomit

Hair Hair iwithin ithe inose ifilters imicrobes,
i dust, iand ipollutants ifrom ithe iair ito
i prevent ithem ifrom iinvading ithe ibody.

Mucous imembranes Mucous imembranes iproduce imucus ito
i trap imicrobes iso ithey icannot ispread
i to ithe irest iof ithe ibody.

Skin Provides ia iphysical ibarrier ito iviruses,
i bacteria, iand imicrobes. iAs iit isheds,
i microbes iare iremoved.

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Unit 12 - Learning aim D: Understand how the human body responds to diseases and infections

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