Download Describe the function of red blood cells.

Topic: Circulatory system
Aim: Describe the components of the blood
and their functions.
Do Now: Take out your blood reading notes
and the Flamin’ Hot Cheetos article.
What is the correct sequence or order
of organs food passes through in the
digestive system?
HW: Read page 553 about Blood types.
Copy Table 2 into your notes section.
Flamin’ Hot Cheetos
Why are they not recommended for children?
• They lack nutritional value.
Flamin’ Hot Cheetos
Why are they not recommended for children?
• They lack nutritional value.
• Contain a lot of red food dye  can turn stool of
people who eat large quantities of it red
• Can be a sign of over-eating
• Complaints of pain in their upper abdomen, rising into
their chest
• People with gastroesophageal reflux should avid it
bc it can lead to a flare-up.
• Significant inflammation of stomach lining 
abdominal pain
• Kids are et up for ulcerations, erosions and peptic
ulcer disease
• Cause gastritis  bloating, burning and vomiting
https://www.youtube.com/watch?v=R-sKZWqsUpw
• Adult = about 5L
• Blood is produced in BONE
MARROW
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.
Describe blood.
• Liquid tissue
• Transports
SUBSTANCES
throughout the
body
1. Identify the 3 types of blood cells.
• Red blood cells
• White blood cells
• Platelets
2. Identify another name for red blood
cells.
• Erythrocytes
3. Describe the function of red blood
cells.
• Transport oxygen and carbon
dioxide to and from cells
• HEMOGLOBIN (protein)
4. Describe the shape of RBC’s. (What
do they look like?)
• Circular
• No nucleus
• Disc shaped
• Biconcave
• Most numerous
https://www.youtube.com/watch?v=_ZV5140OykE
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
5. Identify another name for white
blood cells.
• Leucocytes
6. Describe the function of white blood
cells.
• Identify and destroy pathogens
(disease-causing organism)
• Produce antibodies
• ENGULF pathogens
• Produce ANTIBODIES
7. Describe the
shape of white blood
cells. (What do they
look like?)
• Circular
• Have a nucleus
• Larger than
rbc’s
https://www.youtube.com/watch?v=z_pJBsqw8v
k
https://www.youtube.com/watch?v=0TvTyj5FAaQ
8. Identify another name for platelets.
• Thrombocytes
9. Describe the function of platelets.
• Involved in blood clotting and repair
and regeneration of connective tissue
https://www.youtube.com/watch?v=--bZUeb83uU
A. Platelets stick to edge of cut
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
10. Place the blood cells in correct
sequence (order) from largest to smallest.
• WBC’s  RBC’s  Platelets
11. Identify the liquid that transports
red blood cells, white blood cells and
platelets.
• Plasma
• 90% water
12. Identify other substances that are
transported by plasma.
•
•
•
•
•
•
Nutrients
Metabolic wastes
Enzymes
Salt
Proteins
Antibodies
https://www.youtube.com/watch?v=_WrGROWd3KI
Did you know…
• Coconut water can be used (in
emergencies) as a substitute for
blood plasma.
You can donate your plasma. During the
actual blood donation process, your blood is
drawn through a needle placed in a vein in
one arm. Then a special machine separates
the plasma (and often the platelets) from
your blood sample. This process is called
plasmapheresis. The remaining red blood
cells and other blood components are then
returned to your body, along with a little
saline (salt) solution.
Plasmapheresis is also used to treat the
following:
• Autoimmune diseases
• Neurological diseases
• Very high levels of cholesterol that are
not reduced by diet and medications
• Toxins that can get into your blood
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. Describe the function of plasma.
3. Describe the function and shape of red blood
cells.
4. What do red blood cells contain?
5. Describe the function and shape of white
blood cells.
6. Describe the function and shape of platelets.
Review: Identify the part of blood being
described.
1. Most numerous blood cell. Red blood cells
2. Carries enzymes and nutrients. Plasma
3. Involved in blood clotting. Platelets
4. Carries oxygen. Red blood cells
5. Largest blood cell. White blood cells
6. Made up of 90% water. Plasma
7. Involved in blood clotting. Platelets
8. Protect the body against disease. White blood
cells
9. Carries hormones. Plasma
10. Contains hemoglobin.Red blood cells
https://www.youtube.com/watch?v=CRh_dAzXuoU&index=2&list=PL23D6FD0A9F7DB51D
1. Identify
structures
A, B and
C.
2. Identify the
function of
each
structure.
3. Identify the
fluid that
transports
these
structures.
A
B
C
C
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.
Oral cavity
A
Esophagus
C
B Salivary
glands
Liver H
I
Gall bladder
J
Large intestine
D Stomach
E Pancreas
Small intestine
F
G Rectum