Select your answer:
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Disease and Immunity › ViewThe human body has a number of barriers to prevent infection by pathogens some of which are listed below.
1. Skin
2. Mucus
3. Antibodies
4. Stomach acid
5. Hair in the nose
Which are these are examples of mechanical barrier?
A. 1 and 4
B. 2 and 3
C. 3 and 5
D. 5 and 1
Reproductive System Vocabulary › View
Tube that transports sperm from the testes to the urethra
A. placenta
B. uterus
C. cervix
D. vas deferens