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SCN1111 EXAM QUESTIONS AND 100% CORRECT ANSWERS
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SCN1111 EXAM QUESTIONS AND 100% CORRECT ANSWERSName four nutrients that are transported in plasma
glucose, Amino acids, lipids, vitamins
Name two gases that are transported in plasma
oxygen and carbon dioxide
Name three ions that are transported in plasma
sodium, chloride, bicarbonate
Name three proteins that are transported in plasma
albumin, fibrinogen, globulins
What characteristic is different between erythrocytes and leukocytes
leukocytes contain a nucleus
What characteristic is different between granulocytes and agranulocytes
granulocytes contain granules
what is an anticoagulant
any chemical that prevents blood clotting
what is the natural anticoagulant of the body?
Heparin
,what is one advantage of the biconcave shape of erythrocytes
increased surface to volume ratio
all areas of cytoplasm close to membrane
ability to squeeze through small vessels
anaemia- what is it and causes?
not having sufficient number of red blood cells to carry oxygen through the body
causes: blood loss, destruction of red blood cells (haemolysis) and a reduction in
production of red blood cells (iron deficiency)
list the leukocytes found in blood and list their functions
1. granulocytes
FUNCTIONS: help fight bacterial infections with:
neutrophils (bacteria)
- eosinophils (parasitic worms, allergy, asthma)
- basophils (histamine, heparin)
2. Agranulocytes
FUNCTIONS: mediate immune response with:
-lymphocytes (cell attack or via antibodies)
, -monocytes (phagocytosis)
what are white blood cells also known as?
leukocytes
why are blood studies so important in the diagnosis of disease?
specific changes in formed elements or plasma constituents are characteristics of
certain disease states
how many molecules of oxygen can a haemoglobin molecule transport?
one to four
list the functions of haemoglobin
Picks up oxygen in the lungs and delivers it to the tissues, where it is released for use by
the cells
Picks up carbon dioxide-waste product and delivers it to the lungs, where it is released
and exhaled into the atmosphere-maintaining acid-base homeostasis
Participates in dilation of blood vessels by releasing small amounts of nitric oxide
Explain the function of Colony-Stimulating Factors that act on the white blood cells
-colony-stimulating factors are cytokines (chemical messengers)
-they stimulate proliferation of progenitor cells
-encourage them to differentiate down a particular pathway
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