Human Circulatory Human Circulatory System System
Human Circulatory Human Circulatory SystemSystem
Structure and Structure and FunctionFunction
Lesson 1Lesson 1
Do NowDo Now
Hold one arm straight up in the air, Hold one arm straight up in the air, keeping the other arm down at your keeping the other arm down at your side for 1 minuteside for 1 minute
Compare both your handsCompare both your hands What do you notice about the hand What do you notice about the hand
you held up compared to the one at you held up compared to the one at your side?your side?
TransportTransportLife function by which Life function by which
human beings absorb human beings absorb and distribute the and distribute the materials necessary to materials necessary to maintain life.maintain life.
““Closed system” with one Closed system” with one muscular pumpmuscular pump
HeartHeart(4 chambers)(4 chambers)
Network of blood vessels Network of blood vessels
ArteriesArteriesCarry blood Carry blood AWAYAWAY
from the heart – to from the heart – to body tissuesbody tissues
Thick walled & elasticThick walled & elastic contain cardiac contain cardiac
muscle tissuesmuscle tissues these muscles enable these muscles enable
the artery to maintain the artery to maintain blood flow via rhythmic blood flow via rhythmic contractions = contractions = pulsepulse
VeinsVeinsCarry blood Carry blood TO TO the heart – away from the heart – away from
body tissuesbody tissues- thin walled and less elastic- NO muscle tissues- muscles surrounding the veins contract to squeeze blood through veins- One way valves – prevent backflow within the veinif the veins are defective the blood flows back and veins dilate (varicose veins)
CapillariesCapillariesConnectConnect arteries to veinsarteries to veins smallest vessels with thin wallssmallest vessels with thin walls only one cell thickonly one cell thick diffusion occurs through the walls of diffusion occurs through the walls of
capillaries into cellscapillaries into cells branch from the ends of small arteries branch from the ends of small arteries
and carry oxygenated blood to all tissues and carry oxygenated blood to all tissues in the bodyin the body
Types of CirculationTypes of Circulation
1)1) Systemic ♥ Systemic ♥ aorta aorta to body to body systems systems veins veins ♥ ♥
2)2) Pulmonary ♥Pulmonary ♥pulmonary artery pulmonary artery lungs lungs pulmonary vein pulmonary vein ♥♥
3)3) Coronary – supply blood to the Coronary – supply blood to the heart itselfheart itself
Lymphatic SystemLymphatic SystemCarry lymph to and from Carry lymph to and from
body tissuesbody tissues all cells are suspended in all cells are suspended in
ICF = intracellular fluidICF = intracellular fluid contain valves (similar to contain valves (similar to
veins) to aid in movementveins) to aid in movement place where lymph vessels place where lymph vessels
are enlarged and gathered are enlarged and gathered in masses = lymph nodes in masses = lymph nodes at specific parts of the at specific parts of the bodybody
contain phagocytic white contain phagocytic white blood cells that attack and blood cells that attack and destroy bacteria in lymphdestroy bacteria in lymph
Do NowDo Now
Watch the Brain Pop video Watch the Brain Pop video Circulation and complete the Circulation and complete the multiple choice worksheetmultiple choice worksheet
Circulation!Circulation!
HomeworkHomework
Circulatory System vocabulary Circulatory System vocabulary definitionsdefinitions
The HeartThe Heart
Lesson 2Lesson 2
Do NowDo Now
Make your best guesses on the Make your best guesses on the “Graphs, Stats and Numbers” “Graphs, Stats and Numbers” WorksheetWorksheet
The Human HeartThe Human Heart Size of your fist Size of your fist Center of the chest – (slightly to the Center of the chest – (slightly to the
Left)Left) ““pump” made of muscle = pump” made of muscle =
myocardiummyocardium membrane enclosing it = membrane enclosing it =
pericardiumpericardium
4 Chambers4 Chambers Atria = Right atrium/Left atriumAtria = Right atrium/Left atrium
(upper)(upper)
Ventricles = Right ventricle/Left ventricleVentricles = Right ventricle/Left ventricle(lower)(lower)
ValvesValves
Tricuspid – RA & RVTricuspid – RA & RV
Mitral – LA & LVMitral – LA & LV
** The heart is a double ** The heart is a double pump*pump*
Flow of BloodFlow of Blood Veins Veins Superior and Inferior Vena Superior and Inferior Vena
Cava Cava Right Atrium Right Atrium * Tricuspid valve * Tricuspid valve Right Ventricle Right Ventricle Lungs (to get Lungs (to get oxygen) **oxygen) **via the pulmonary valve to the via the pulmonary valve to the pulmonary artery pulmonary artery
** In the lungs the blood passes through ** In the lungs the blood passes through capillaries, where gas exchange occurs capillaries, where gas exchange occurs by oxygenating blood and removing by oxygenating blood and removing CO2 from the bloodCO2 from the blood
blood then returns via the pulmonary blood then returns via the pulmonary vein vein Left Atrium Left Atrium Left Ventricle Left Ventricle Aorta Aorta ** via the aortic valve** via the aortic valve
http://medtropolis.com/VBody.asphttp://www.edumedia-sciences.com/a387_l2-circulatory-system.html
Right side of the Right side of the heart receives O2 heart receives O2 deficient blood and deficient blood and transports it to the transports it to the lungs lungs
picks up O2picks up O2
* Left side of the * Left side of the heart receives O2 heart receives O2 rich blood and rich blood and transports it to the transports it to the bodybody
In class assignment In class assignment
Watch the online simulation of the Watch the online simulation of the flow of blood through the heartflow of blood through the heart
Heart cycleHeart cycle
““Label it” worksheetLabel it” worksheet
HomeworkHomework
Heart multiple choice worksheet Heart multiple choice worksheet Heart cycle worksheetHeart cycle worksheet
HeartbeatHeartbeat
Lesson 3 Lesson 3
Do NowDo Now
Vocabulary WorksheetVocabulary Worksheet
For each heartbeat:For each heartbeat: Systolic pressureSystolic pressure is peak pressure is peak pressure in the arteries, which occurs near in the arteries, which occurs near the beginning of the cardiac cycle the beginning of the cardiac cycle when the ventricles are contracting. when the ventricles are contracting.
Diastolic pressureDiastolic pressure is minimum is minimum pressure in the arteries, which occurs pressure in the arteries, which occurs near the end of the cardiac cycle near the end of the cardiac cycle when the ventricles are filled with blood. when the ventricles are filled with blood.
Heartbeat Heartbeat
contractions = systolecontractions = systole relaxation = diastolerelaxation = diastole
SS 120 120
BP = ---- = ----BP = ---- = ---- (normal BP)(normal BP)
DD 80 80
Blood PressureBlood Pressure Force exerted by circulating blood Force exerted by circulating blood
on the walls of blood vessels on the walls of blood vessels The pressure of the circulating The pressure of the circulating
blood blood decreasesdecreases as blood moves as blood moves through arteries, arterioles, through arteries, arterioles, capillaries and veins.capillaries and veins.
Heart valves open and close Heart valves open and close heart heart sounds like “lub dub”sounds like “lub dub”
**Abnormal blood flow through the **Abnormal blood flow through the heart = murmurheart = murmur
Pacemaker – triggers heart beatPacemaker – triggers heart beat EKG (electrocardiogram) – measures EKG (electrocardiogram) – measures
voltages through the heartvoltages through the heart coronary arteries to heart musclecoronary arteries to heart muscle
heart soundsheart sounds
Heartbeat or pulse is influenced by Heartbeat or pulse is influenced by drugs, exercise and illnessdrugs, exercise and illness
Ex: high BP, low BP, physical Ex: high BP, low BP, physical activity, obesity, ephedrine, drugsactivity, obesity, ephedrine, drugs
** Exercise increases the heart rate ** Exercise increases the heart rate to increase blood flow to muscles to increase blood flow to muscles and deliver more O2and deliver more O2
Disorders of the Disorders of the Cardiovascular SystemCardiovascular System
Atherosclerosis Atherosclerosis
StrokeStroke
Heart AttackHeart Attack
HypertensionHypertension
In class assignment In class assignment
The Heartbeat game!The Heartbeat game!
HomeworkHomework
Chapter 23 Study Guide CirculationChapter 23 Study Guide Circulation Case Study: Heart AttackCase Study: Heart Attack
BloodBlood
Lesson 4 Lesson 4
Do NowDo Now
Blood cycle worksheetBlood cycle worksheet
BloodBlood Liquid tissue Liquid tissue 55% 55% plasmaplasma = clear liquid = clear liquid
90% water90% water10% nutrients, salts, hormones, 10% nutrients, salts, hormones, wastes and proteinswastes and proteins
45% 45% Cells = Cells = 3 types 3 types
Red blood CellsRed blood Cells – RBC – RBC
- very numerous- very numerous- disc shaped- disc shaped- no nuclei- no nuclei- contain - contain hemoglobinhemoglobin – red pigment, – red pigment, carries O2carries O2- live for 120 days – need to be made all the time- live for 120 days – need to be made all the time- requires Fe (iron) to make hemoglobin- requires Fe (iron) to make hemoglobin*not enough Fe = Anemia (decreased RBC’s)*not enough Fe = Anemia (decreased RBC’s)* Sickle cell anemia = genetic disease – * Sickle cell anemia = genetic disease –
abnormal hemoglobin causes cells to sickleabnormal hemoglobin causes cells to sickle
White Blood CellsWhite Blood Cells – protect the – protect the body from disease = defendersbody from disease = defenders
- fewer in # than rbc’s- fewer in # than rbc’s - have a nucleus- have a nucleus - larger than rbc’s- larger than rbc’s - phagocytize bacteria- phagocytize bacteria - made in bone marrow and lymph- made in bone marrow and lymph * Leukemia – cancer caused by increased * Leukemia – cancer caused by increased
productionproduction
Platelets – Platelets – small, noncellular small, noncellular components of blood components of blood
** important to ** important to clottingclotting
ICF – ICF – Intracellular fluid – rich in salts Intracellular fluid – rich in salts ICF drains from tissues within ICF drains from tissues within lymphatic vessels, where it is known lymphatic vessels, where it is known as lymphas lymph
In class assignmentIn class assignment
Watch the Brain Pop video “Blood”Watch the Brain Pop video “Blood” Complete the matching worksheetComplete the matching worksheet
HomeworkHomework
Blood definitions and multiple choice Blood definitions and multiple choice worksheetworksheet
Blood TypesBlood Types
Lesson 5Lesson 5
Do NowDo Now
Around the world worksheetAround the world worksheet
Blood GroupsBlood Groups
ABO classificationABO classification
Blood TypeBlood Type AntigenAntigen AntibodyAntibody
AA AA Anti-BAnti-B
BB BB Anti-AAnti-A
ABAB A&B A&B nonenone
OO NoneNone Anti-A/Anti-B Anti-A/Anti-B• Rh factor=Rh factor=+ + (85%)(85%) OR OR – – (15%) is another (15%) is another
antigenantigen
Blood TransfusionsBlood Transfusions
Blood TypeBlood Type Donate toDonate to Receive Receive fromfrom
AA A & AB A & AB A & O A & O
BB B & AB B & AB B & O B & O
AB AB (universal recipient)(universal recipient) ABABA,B,O,ABA,B,O,AB
O O (universal donor)(universal donor) A,B,AB,O A,B,AB,O OO
In class assignmentIn class assignment
Brain Pop video “Blood Types”Brain Pop video “Blood Types” Multiple Choice worksheetMultiple Choice worksheet ““You’re My Type”You’re My Type”
HomeworkHomework
Vocabulary worksheetVocabulary worksheet What’s your blood type? OR what is What’s your blood type? OR what is
your parents blood type?your parents blood type?
Heart Rate Lab Heart Rate Lab
Lesson 6Lesson 6
In class assignmentIn class assignment
Heart Rate Lab ActivityHeart Rate Lab Activity
HomeworkHomework
Complete the Heart Rate LabComplete the Heart Rate Lab