components of blood create a new folder in ebackpack- cardiovascular system upload 12.02 “intro to...
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Components of Blood
Create a new folder in eBackpack-Cardiovascular System
Upload 12.02 “Intro to Blood Notes”
Erythrocytes(Red Blood Cells)
Anatomy-biconcave
Physiology-more surface area to carry oxygen
ErythrocytesAnatomy
-1/3 hemoglobin by volume
Physiology-protein pigment which results in red color of blood and helps transport oxygen
Erythrocytes
Anatomy-lack nuclei
--elastic and flexible
-formed in red bone marrow
Physiology-cannot reproduce
-can pass through narrow capillaries
-4,200,000 – 6,200,000 per mm3
ErythrocytesAnatomy
-live about 120 days
Physiology
-become less elastic and get damaged when passing through capillaries
-macrophages (especially in the liver) destroy injured or old rbc’s
The macrophage destroys the red blood cells that no longer have their biconcave shape. This person probably has malaria.
Erythrocytes under the microscope
Leucocytes(White Blood Cells)
Anatomy5 types1. neutrophil
Physiology
Phagocitize (engulf) small particles
Click on the picture to watch the video
LeukocytesAnatomy
2. Eosinophil
Physiologykills parasites and helps control inflammation and allergic reactions
Can you identify this parasite?
It’s called a pin worm and it is commonly found in your anus! They make you itch.
LeukocytesAnatomy
Basophil
Physiology
releases heparin (prevents blood clots)and histamine (during an allergy it causes runny nose and watery eyes)
LeukocytesAnatomy
Monocyte
Physiologyphagocytizes large particles
LeukocytesAnatomy
Lymphocyte
Physiologyprovides immunity
Leukocytes
Anatomyformed in red bone marrow
Physiology5,000-10,000 mm3
Thrombocytes(Platelets)
AnatomyCell fragment
lack a nuclei
live for 10 days
formed in red bone marrow
half the size of rbc
PhysiologyControls blood loss from broken blood vessels
130,000-360,000 mm3
Important fact
*Rbc’s, wbc’s and platelets make up 45% of the blood and are collectively known as the “formed elements”
erythrocyte (left), thrombocyte(center), and leukocyte (right)
Electron microscope image
Blood Plasma
Anatomy
92 % water
8% dissolved organic molecules
Physiology
transports nutrients, gases, and vitamins
regulates fluid and electrolyte balance
maintains favorable pH
Important fact
Plasma makes up 55% of the blood.
You are now ready to complete the introductory homework.