Circulatory System Summary
Blood Vessels:
Parts of the System:
•
•
•
•
•Pulmonary (lungs)
•Coronary (heart)
•Systemic (other)
Arteries
Veins
Capillaries
Sinusoids
Path of a Red Blood Cell
Circulatory System Activity
Composition of Blood
Blood is made up of:
Plasma:
•Pale yellow fluid
•Composed of mostly water, with small amounts of protein
•Average of 2-3 liters of plasma in the human body
•Carry nutrients and wastes to their respected places
throughout the body
Red Blood Cells:
•250 million RBC in a drop of blood
•Contain a protein named hemoglobin
•RBC carry gasses used in respiration throughout the body
Composition of blood cont.
White Blood Cells:
•Colorless cells with an irregular shape, contain a nucleus
•Five different types of WBC
•Neutrophils, Eosinophils, Basophils, Monocytes and
Lymphocytes
•Each WBC plays a different role in the body’s
immune system
WBC in action
Platelets:
•Composed of pieces of cytoplasm, which have no
nucleus
•Secretes serotonin to constrict torn blood vessels
•Gather at the site of a torn blood vessel to clog gaps
in broken vessels, in an effort to stop bleeding
Blood Composition Summary
Reference Page:
(1)"Blood - The River of Life." Oracle ThinkQuest Library . N.p.
n.d. Web. 12 Nov. 2009. <http://library.thinkquest.org/C011508
?c=wbc>.
(2) "Blood Composition(leukocytes.attack) ." YouTubeBroadcast Yourself . N.p., n.d. Web. 12 Nov. 2009.
<http://www.youtube.com/watch?v=FPO_9F9BJvk>.
(3) "Blood Composition." Argosy Medical Animation. N.p.,
n.d. Web. 12 Nov. 2009. <http://www.argosymedical.com/
flash/the_blood/landing.html>.
(4) "Changing the Face of Medicine | Circulation Station."
National Library of Medicine - National Institutes of Health.
N.p., n.d. Web. 12 Nov. 2009. <http://www.nlm.nih.gov/
changingthefaceofmedicine/activities/circulatory.html>.