lesson 1 circulatory system - grade 9

STRUCTURE AND FUNCTION:

CIRCULATORY SYSTEMJourney Into a Man’s Heart

K W H LWhat do I

know?  

What do I want to

find out?

How can I find out

what I want to learn?

What did I learn?[at the

end of the lesson]

Skills I expect to

use 

What makes your heart beats fast?

What do you know about your Heart?

How do you take care of your Heart?

LABORATORY ACTIVITY 1 – PULSE RATE CHECK

Standing

Walking

Jogging in

PlacePulse Rate

Guide Questions1.Do you have a normal heart rate?2. What is the possible cause of having an abnormal pulse rate?3. Why is exercise beneficial to you?4. Aside from exercise, how do you keep your heart healthy?

How do the parts of the Circulatory System work

together?How do we take care of our

circulatory system?How is the organ system designed to perform its

function?

1 23

What do cell of an organism need to carry

on life processes? What is

METABOLISM?

What do you call the waste products

of the cells?

F _ _ DO _ _ _ _ N

N _ _ _ _ _ _ _ S

Life

Circulatory

System

Body’s transport System

What is CIRCULA

TION?

Movement of the blood

Pumping action of heartDistribute nutrients

Remove waste

Cardiovascular

“Cardio” = Heart

“Vascular” = Blood Vessels

What is the function of BLOOD VESSELS?

What are the three types of BLOOD VESSELS?

Capillaries

Vein Artery

Which blood vessel carry blood away from the heart? Which blood vessel brings blood back to the heart?

Which blood vessel carry blood from small artery to a small vein?

Closed Transport System

Open Transport System

WHAT IS THE DIFFERENCE?Closed

- Vertebrates and few invertebrates - Have heart and blood vessels - Does not fill body cavities - Blood kept in blood vessels - Heart pumps blood

Open - Invertebrates

- Do not have true heart or capillaries - Blood is pumped in hemocoel [cavity] - Blood + interstitial fluid = hemolymph

Structure of Blood Vessels

[1] [2] [3]

THE HEARTThe most

“hardworking” organ

What are the four chambers of the heart?

What are the four valves of the heart?

What are the five large blood vessels connected to the heart?

BLOOD

45%55

%

Blood CompositionBlood Cells Blood Plasma

45%

1%

54%

Composition of Blood CellsRed Blood CellsWhite Blood Cells + Blood PlateletsPlasma

92%

7% 1%

Composition of Blood PlasmaWater Proteins Other Substances

RED BLOOD CELLS [ERYTHROCYTES][biconcav

e][no

nucleus][unable to

repair]

[120 days body][10 days blood]

[Hemoglobin

red][carry

O2]

WHITE BLOOD CELLS [LEUKOCYTES]

{larger than

RBC}{lymphocytes

antibodies}{lymph

nodes}{act against foreign

substances}

BLOOD PLATELETS

Not cellsNo

nuclei

Fragments

Role: Clotting of Blood

Are you a humanitarian?

Are you willing to donate blood?

3-2-1 3 Things That You Remember

2 Things That You Don’t Understand

1 Thing That You Want to Share