8/14/2019 Working and Structure of Heart

1/23

8/14/2019 Working and Structure of Heart

2/23

8/14/2019 Working and Structure of Heart

3/23

ToTo acquaintacquaint thethe students students withwith transportationtransportation inin

humanhuman beingsbeings..

ToTo impartimpart thethe knowledgeknowledge of of bloodblood components,components,

circulatorycirculatory system, system, structure structure of of humanhuman heartheart andand

bloodblood vesselsvessels..

8/14/2019 Working and Structure of Heart

4/23

TransportationTransportation ofof digesteddigested food,food, oxygen,oxygen,

hormoneshormones andand wastewaste materialmaterial inin humanhumanbeings beings occursoccurs throughthrough blood blood andand LymphLymph..

ThisThis purposepurpose isis solvedsolved byby CirculatoryCirculatory SystemSystem

havinghaving followingfollowing partsparts::

11::---- CirculatoryCirculatory mediummedium BloodBlood

22::---- BloodBlood VesselsVessels

Arteries,Veins,CapillariesArteries,Veins,Capillaries

33::---- PumpingPumping organorgan HeartHeart

8/14/2019 Working and Structure of Heart

5/23

ItIt isis thick,thick, redred andand saltysalty connectiveconnective tissuetissue.. ItsIts pHpHrangesranges fromfrom 77..33 toto 77..55.. ItIt isis composedcomposed ofof twotwocomponentscomponents-- PlasmaPlasma andand BloodBlood corpusclescorpuscles..

PlasmaPlasma-- ItIt isis lightlight yellowyellow colouredcoloured fluidfluid includingincludingwater,water, chlorideschlorides andand proteinsproteins..BloodBlood CorpusclesCorpuscles-- HumanHuman blood blood composescomposes ofof

threethree typestypes ofof bloodblood corpusclescorpuscles::

1.1. RR..BB..CC..2.2. WW..BB..CC..

3.3. PlateletsPlatelets

8/14/2019 Working and Structure of Heart

6/23

RR..BB..CC..

TheseThese areare redred

inin colourcolour duedue totohaemoglobinhaemoglobin..

TheirTheir lifelife spanspan isis

ofof 120120 daysdays..

8/14/2019 Working and Structure of Heart

7/23

WW..BB..CC..TheseThese actact asas

soldierssoldiers byby

constructingconstructing antiantibodiesbodies TheirTheir lifelife

spanspan isis ofof 33--44

daysdays

8/14/2019 Working and Structure of Heart

8/23

PlateletsPlateletsTheseThese corpusclescorpuscles

helphelp inin coagulationcoagulation

ofof bloodblood.. TheirTheir lifelifespanspan isis ofof 77daysdays

8/14/2019 Working and Structure of Heart

9/23

ExchangeExchange ofof essentialessential nutrients,nutrients, gasesgases wastewasteproducts,products, hormones,hormones, enzymesenzymes andand ionsions..

ToTo regulateregulate bodybody temperaturetemperature..

WW..BB..CC.. actact asas soldierssoldiers byby makingmaking antibodiesantibodiesagainstagainst infectionsinfections..

PlateletsPlatelets helphelp inin bloodblood coagulationcoagulation..

GlobulinGlobulin andand AlbuminAlbumin helphelp inin osmoregulationosmoregulation..

8/14/2019 Working and Structure of Heart

10/23

Blood vessels are of three typesBlood vessels are of three types--

1.1. ArteriesArteries

2.2. VeinsVeins

3.3. CapillariesCapillaries

Arteries:Arteries:----Arteries are red coloured,deep seated, thick walled vessels carryingArteries are red coloured,deep seated, thick walled vessels carryingoxygenated blood from heart to all parts of body without valves.oxygenated blood from heart to all parts of body without valves.

Veins:Veins:----Veins are blue coloured,superficial ,thin walled vessels carryingVeins are blue coloured,superficial ,thin walled vessels carrying

deoxygenated blood from all parts of body to heart. Veins have valves.deoxygenated blood from all parts of body to heart. Veins have valves.

Capillaries:Capillaries:----Capillaries are thin walled vessels with narrow lumen. These performCapillaries are thin walled vessels with narrow lumen. These perform

the function of exchange of gases, digested food, waste products andthe function of exchange of gases, digested food, waste products andhormoneshormones..

8/14/2019 Working and Structure of Heart

11/23

8/14/2019 Working and Structure of Heart

12/23

8/14/2019 Working and Structure of Heart

13/23

HumanHuman heartheart isis highlyhighly muscular,muscular, reddishreddishbrown,brown, conical,conical, pumpingpumping organorgan situatedsituatedinin thoracicthoracic cavitycavity.. InIn adultsadults heartheart isis1212cc..mm.. inin lengthlength andand 99 cc..mm.. inin breadthbreadth.. ItItisis protected protected by by doubledouble layeredlayeredpericardium pericardium filledfilled withwith fluidfluid calledcalledpericardialpericardial fluidfluid..

ItIt consistsconsists ofof fourfour chamberschambers upperupperauriclesauricles andand lowerlower ventriclesventricles.. LeftLeft andandrightright sidessides ofof heartheart areare completelycompletelydivideddivided by by intraintra--auriculoauriculo--ventricularventricularseptumseptum.. RightRight auricleauricle andand ventricleventricle areare

interconnectedinterconnected by by tricuspidtricuspid valvevalve andandleftleft areare interconnectedinterconnected byby bicuspidbicuspid valvevalvetoto preventprevent thethe backflowbackflow ofof bloodblood.. SinceSincethethe ventriclesventricles havehave toto pumppump thethe bloodblood totoallall bodybody partsparts ,, thesethese areare thickthick walledwalled..

8/14/2019 Working and Structure of Heart

14/23

8/14/2019 Working and Structure of Heart

15/23

8/14/2019 Working and Structure of Heart

16/23

A Catheter is insertedin diseased artery.

Repeatedly inflation

and deflation of balloon

at the end of catheterflattens the plaque to

restore the blood flow

through blocked artery

8/14/2019 Working and Structure of Heart

17/23

8/14/2019 Working and Structure of Heart

18/23

Angiogram is an

X-ray examinationof heart after

injection of dye

Areas blocked by

arthero-scleroticplaque appear as

dark spots.

8/14/2019 Working and Structure of Heart

19/23

Arterial Plaque is

deposited due to

Arthrosclerosis. Plaque

is deposited along the

inner lining of artery. Itconsists of Cholesterol,

Platelets, Muscles cells

and the other tissues.

8/14/2019 Working and Structure of Heart

20/23

Angiogram records the

activity of heart.Irregularities in

angiogram diagnose

coronary heartdiseases, diseases of

muscles, blood supply

and neural control of

heart.

8/14/2019 Working and Structure of Heart

21/23

What is transportation?What is transportation?

How many chambers are there in human heart?How many chambers are there in human heart?

Write different types of blood vessels?Write different types of blood vessels?

Why are ventricles thick walled ?Why are ventricles thick walled ? Draw labelled diagram of human heart?Draw labelled diagram of human heart?

What is E.C.G.?What is E.C.G.?

What is angiogram?What is angiogram?

-------------- help in blood coagulation.help in blood coagulation. W.B.C. act asW.B.C. act as --------------------..

Haemoglobin isHaemoglobin is -------------- carriers.carriers.

8/14/2019 Working and Structure of Heart

22/23

ENCARTA ENCYCLOPEDIA DELUXEENCARTA ENCYCLOPEDIA DELUXE

20052005 TEXT BOOK FOR SEC. CLASSESTEXT BOOK FOR SEC. CLASSES

(P.S.E.B.)(P.S.E.B.)

http://www.web anatomyhttp://www.web anatomy

8/14/2019 Working and Structure of Heart

23/23