Topic: Circulatory system Aim: Describe the components of the blood and their functions. Do Now: Take out your blood reading notes. Pass up your procedures. Take out your Digestive System ISN HW: Finish blood vessels reading notes. Surface Area Lab due tomorrow!

Oral cavity Esophagus Salivary glands Liver Stomach Gall bladder Pancreas J Small intestine Large intestine F G Rectum

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

What are red blood cells also known as? Erythrocytes

Describe the function of red blood cells. Transport OXYGEN and CARBON DIOXIDE to and from cells Describe the function of red blood cells.

HEMOGLOBIN (protein)

Disc-shaped (BICONCAVE) 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

Leucocytes What 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

Thrombocytes What 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.

Identify the name of the liquid that transports red blood cells, white blood cells and platelets. Plasma

Transports materials: 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 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… Identify the four parts of the blood. Where are blood cells produced? Describe the function of plasma. Describe the function and shape of red blood cells. What do red blood cells contain? Describe the function and shape of white blood cells. Describe the function and shape of platelets.

Review: Identify the part of blood being described. Most numerous blood cell. Carries enzymes. Involved in blood clotting. Carries oxygen. Largest blood cell. Made up of 90% water. Protect the body against disease. Carries hormones.

What is a major difference between red blood cells and white blood cells? Red blood cells contain hemoglobin, but white blood cells do not. Red blood cells can move, but white blood cells cannot. Red blood cells contain nuclei, but white blood cells do not. Red blood cells engulf foreign bacteria, but white blood cells do not.

What component of blood is important in healing wounds on the skin?   red blood cells   urea   platelets   white blood cells 

in lymph nodes in bone marrow at the sinoatrial node in the heart  Where are red and white blood cells made in the body?   in lymph nodes   in bone marrow   at the sinoatrial node   in the heart

What component of blood plays a role in protection against disease?   white blood cells   platelets   urea   red blood cells

Which blood component is a liquid?    platelets   white blood cells   plasma   red blood cells

What is a pickup function of blood?   picks up urine from the bladder   picks up undigested food from the large intestine   picks up carbon dioxide from the air in the lungs    picks up carbon dioxide waste from cells.