Do Not begin the word with CAPITAL LETTER for label
TITLE!!! Refer to question, state magn (H.P.), underline title
**1.Proportion 2.Smooth line 3.cleanlines擦靚冇重疊 4.要注釋
Two Cell Type, state features and functions (Annotiation)
Red Blood Cell (diameter 7-8um small compare to white blood cell )
-Biconcave disc shape(more surface area for oxygen binding)
-Red due to the pigment haemoglobin(for carry oxygen)
-No nucleus when mature(make room for more oxygen)
-long life span (~120 days)
-large number in blood smear(5.4M/mm2)
-Function: Carry oxygen from the lungs to the body's tissues and remove carbon
dioxide from those tissues to be exhaled.
White Blood Cell(diameter 6-10um or 10-29um large compare to red blood cell)
-Irregular shape
-Colourless
-Two major types:Phagocyte with lobed nucleus
Lymphocyte with large round nucleus
-short life span(>3 days)
-Small number in blood smear(7000/mm2)
-Function: Protect human body against diseases by killing germs
Blood platelet(1-4um)
-Irregular shape
-colourless
-no nucleus
-short life span (7 days)
-250000
-Function: involved in blood clotting to prevent further blood loss and entry of germs
into our body through the cut wound.
Remember to sit down
-mirror and condensor
-handling of specimen
-eyepiece objective lp hp
-correcting focusing
-posture