BIOLOGY Y12

Search for Better Health

CLOZE PASSAGE No 4

First and second line of defence

Complete the following sentences using appropriate words or short phrases

a) / Resistance that is present at birth is called ……………….. immunity / Natural
b) / Thickened outer layer of cells in the skin is called …………….. / Keratin
c) / Because skin lacks m…………….. it limits the growth of micro organisms / moisture
d) / ……………membranes are found in the alimentary canal, respiratory tract and urinogenital surfaces. / Mucous
e) / Hair like structures found to trap pathogens in the lungs / Cilia
f) / The pH of the stomach sets up a ………………… barrier / chemical
g) / Other body secretions that limit the growth of pathogens? / Tears, perspiration, urine
h) / The skin acts as a ……………… line of defence. / First
i) / The bodies response to damaged tissue / Infammation
j) / The inflammation response releases ………………. / Histamines
k) / Two types of inflammation include …………………. and …………………. / Acute and chronic
l) / White blood cells that engulf pathogens / Phagocytes
m) / System of vessels that carry clear fluid around body / Lymph
n) / Phagocytes and cell death to seal off pathogen are examples of the bodies ………….. line of defence / Second
o) / Areas within the lymph where white blood cells and pathogens aggregate / Lymph nodes
p) / White blood cells found in the lymph / Lymphocytes
q) / Candidiasis is caused by an imbalance of m……………………. / microflora
r) / Candidiasis has a common name called ……………………….. / Thrush
s) / It often attacks the mouth and the female ………………… tract / Genital
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