Topic: Circulatory systemAim: Describe the components of the

blood and their functions.

Do Now: Take out your blood reading notes.

a.Pass up your procedures.b.Take out your Digestive System ISN

HW: Finish blood vessels reading notes.Surface Area Lab due tomorrow!

Oral cavity

Stomach

Pancreas

Small intestine

Rectum

Gall bladder

Large intestine

B

A

C

D

E

F

G

H

I

J

Salivary glands

Esophagus

Liver

Describe blood.

•Connective tissue

•Liquid tissue

•Transports SUBSTANCES throughout the body

•Adult = about 5L

Did you know…•A newborn baby has about 1 cup of blood in his body.•It would take 1,200,000 mosquitos, each sucking once, to completely drain an average human of blood.•Blood makes up about 7% of your body weight.•It only takes 20 to 60 seconds for a drop of blood to travel from the heart, through your body, and back to the heart again.

•Red blood cells•White blood cells•Platelets

Identify the 3 types of blood cells.

•Produced in BONE MARROW

•ErythrocytesWhat are red blood cells also known as?

Describe the function of red blood cells.

• Transport OXYGEN and CARBON DIOXIDE to and from cells

• HEMOGLOBIN (protein)

Describe the shape of red blood cells.

• Disc-shaped (BICONCAVE)

• No nucleus when they mature

• Most numerous

Did you know…

•A red blood can make a complete circuit of your body in 30 seconds.

•There are 150 Billion red blood cells in one ounce of blood

•LeucocytesWhat are white blood cells also known as?

•Identify and destroy pathogens (disease-causing microorganisms)

Describe the function of white blood cells.

• ENGULF pathogens

• Produce ANTIBODIES

Describe the shape of white blood cells.

•Circular•Contain a nucleus•Largest

•Fewer than RBC’s

•ThrombocytesWhat are platelets also known as?

•Involved in BLOOD CLOTTING, and repair and regeneration of connective tissue

Describe the function of platelets.

Blood Clotting

A. Stick to edge of cut

Circulatory System: Blood Platelets

B. FIBRIN is produced (long, sticky string) that sticks to cut vessel

C. Web like complex of strands forms to stop bleeding CLOT

D. Clot becomes hard & dry (SCAB)

E. Skin cells repaired under scab and scab falls off

•WBC’s•RBC’s•Platelets

Place the blood cells in correct sequence from largest to smallest.

•PlasmaIdentify the name of the liquid that transports red blood cells, white blood cells and platelets.

Function of plasma:• Transports materials:

–Salt, sugar, proteins–Wastes–Enzymes–Blood cells–Hormones

Did you know…•Coconut water can be used (in emergencies) as a substitute for blood plasma.

An average adult’s body normally contains over 35 billion WBC’s. That’s

1 for every 600-700 RBC’s.

One grain of rice = 1 cubic mm• 5 million RBC’s• 5,000 – 10,000 WBC’s• 400,000 platelets

Let’s summarize…

1. Identify the four parts of the blood.

2. Where are blood cells produced?

3. Describe the function of plasma.

4. Describe the function and shape of red blood cells.

5. What do red blood cells contain?

6. Describe the function and shape of white blood cells.

7. Describe the function and shape of platelets.

Review: Identify the part of blood being described.

1. Most numerous blood cell.2. Carries enzymes.3. Involved in blood clotting.4. Carries oxygen.5. Largest blood cell.6. Made up of 90% water.7. Involved in blood clotting.8. Protect the body against disease.9. Carries hormones.

What is a major difference between red blood cells and white blood cells?

1. Red blood cells contain hemoglobin, but white blood cells do not.

2. Red blood cells can move, but white blood cells cannot.

3. Red blood cells contain nuclei, but white blood cells do not.

4. Red blood cells engulf foreign bacteria, but white blood cells do not.

What component of blood is important in healing wounds on the skin?  

1.red blood cells  

2.urea  

3.platelets  

4.white blood cells 

 Where are red and white blood cells made in the body?  

1.in lymph nodes  

2.in bone marrow  

3.at the sinoatrial node  

4.in the heart

What component of blood plays a role in protection against disease?  

1.white blood cells  

2.platelets  

3.urea  

4.red blood cells

Which blood component is a liquid?   

1.platelets  

2.white blood cells  

3.plasma  

4.red blood cells

What is a pickup function of blood?  

1. picks up urine from the bladder  

2. picks up undigested food from the large intestine  

3. picks up carbon dioxide from the air in the lungs   

4. picks up carbon dioxide waste from cells.