Lecture 30 – Blood – Formed Elements

1)      White blood cells – leukocytes.  Leuk – means white and cytes means cells.

True cells with a nucleus.

2)      Red blood corpuscles (erythrocytes) – It is erroneous to refer to them as cells, as they have no nucleus.  Saying red blood cells is scientifically sloppy.  They are actually corpuscles.

3)      Cell fragments (platelets – come from a big cell, cytoplasm – NO NUCLEUS.

What is the proportion of formed elements to plasma?

Approximately 45% formed elements and 55% plasma.  A tube called a hematocrit is used to centrifuge and determine components of blood.

Reduced red blood corpuscles – anemia-

Types of Anemia –            Microcytic – small and few RBC’s (micro equals small and cyte means cell)

–          Hypochromic Anemia – (Remember to break down the words.  We spent several lectures on etymology.  Hypo means reduced or under capacity and cytic refers to the cell.  Review, review, and review.  There are no short cuts.  If you want to pass a test, know everything about your subject matter.)  At some level  you need to understand relationships, as opposed to wrote memorization.  Reduce hemoglobin, which is an oxygen carrying pigment that is rich in iron.  Eat well to increase iron.


What is Plasma?


90% H2O

7-9% Plasma proteins (albumin, fibrinogen, globulin)

Albumin and fibrinogen are formed in the liver.  Globulin is found in mast cells (CT cells).  Albumin regulates osmosis, maintaining a balance of water.  Fibrinogen clots blood and globulin plays a role with our antibodies.  We NEED plasma proteins.  Do well with this information.  Just like the bones, there is a massive amount of information to cover about blood.  We will take our time and delve into the subject in great detail.

Read an article in a journal regarding your academic discipline daily.  A true base of knowledge is not built overnight.  Gradually you will become an expert in your discipline.




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