Lab #15 Blood
What are the parts of the blood?
What are some diseases that
affect human blood?
TASK #1
OBSERVING RED BLOOD CELLS, WHITE
BLOOD CELLS AND PLATELETS
Human Blood Parts
Red Blood Cells (Erythrocytes
= scientific name)
–Carry oxygen (gas)
–Protein = Hemoglobin – helps
them hold on to the oxygen
–Most numerous in a blood
smear
Red Blood Cells
1. Draw one or two RBC’s
on your chart on page 2
where it says drawings
and labels
2. Label
• Cell membrane
• Cytoplasm
3. Number of cells in field
(count) = 100
Cell membrane
Cytoplasm
Human Blood Parts
White Blood Cells
(Leukocytes = scientific name)
– Function in the immune system
– Much larger than RBC’s
– Least Numerous
– Surround and engulf bacteria = phagocytosis
– Since they help fight infections a high number
of them may indicate that you are sick and/or
have a disease!
White Blood Cells
1. Draw one or two
WBC’s on your
chart on page 2
where it says
drawings and labels
2. Label:
• Cell membrane
• Cytoplasm
• Nucleus
• Number of cells in
field (count) = 15
Cell membrane
Nuclear material
This is it!!
Cytoplasm
Human Blood Parts
Platelets (Thrombocyte =
scientific name)
–Function in clotting
–“Dot-like” fragments scattered
throughout smear
–Cell fragments, not cells!
–Next most numerous
Platelets
1. Draw some platelets on
your chart on page 2
where it says drawings
and labels.
1. You DO NOT have to
label anything for these.
2. They are the little purple
dots!!!
3. “t” stands for thrombocyte
2. Number of cells in field
(count) = 50
Human Blood Parts
Plasma
– Functions in transporting nutrients and
hormones.
– Separates this way due to density.
– Yellowish in color
1. On your lab, sketch the
test tube showing the
separation of blood
2. Label the parts of the
blood as shown in the
diagram
TASK #2
Observing a healthy human
blood smear
Human Blood Smear
White blood cell
Magnification 800x
Identify:
1. Red Blood cell
• Label cell
membrane
• Label
cytoplasm
2. WBC
• Label cell
membrane
• Label
cytoplasm
• Label nucleus
3. Platelets
TASK #3
Observing common blood
diseases and disorders
Leukemia Smear
Diseased white blood cell
Magnification 800x
Identify:
1. Red Blood cell
• Label cell
membrane
• Label cytoplasm
2. WBC
• NOTICE THAT
THE NUCLEUS
IS MUCH
BIGGER!
• Label cell
membrane
• Label cytoplasm
• Label nucleus
3. Platelets
SICKLE CELL ANEMIA
Identify:
1. Red Blood cell
• Label cell
membrane
• Label cytoplasm
2. Sickle cell
3. WBC
• Label cell mem
• Label cytoplasm
• Label nucleus
4. Platelets
Magnification 800x
Mononucleosis Smear
Identify:
1. Red Blood cell
• Label cell
membrane
• Label cytoplasm
2. WBC
• NOTICE THE
WATERY
APPEARANCE OF
THE WBC
• Label cell membrane
• Label cytoplasm
• Label nucleus
Magnification 800x
3. Platelets
TASK #4
Observing the blood of other
vertebrates
Frog Blood
Platelet
Identify:
1. Red Blood cell
• Label cell
membrane
• Label cytoplasm
• Label nucleus
2. WBC
• Label cell mem
• Label cytoplasm
• Label nucleus
3. Platelets
Bird blood
Red blood cell
White blood cell
Identify:
1. Red Blood cell
• Label cell
membrane
• Label cytoplasm
• Label nucleus
2. WBC
• Label cell mem
• Label cytoplasm
• Label nucleus
3. Platelets
• Just draw some
dots!