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HCA201b finals review Questions with 100% Correct
Answers 2025 | 2026
/3 identify three natural body defenses that protect us from
invasion of unwanted substances. - ANSWER Skin, mucous
membrane, hairs, white blood cells, t cells, antibodies, lymph
system.
First line of defence:
Mechanical barriers - intact skin and mucous membranes
Chemical barriers - tears, stomach acids saliva, perspiration
Second line of defence:
Phagocytes - white blood cells that digest and destroy micFirst
line of defence:
Mechanical barriers - intact skin and mucous membranes
HCA201b finals review Questions with 100% Correct
Answers 2025 | 2026
/3 identify three natural body defenses that protect us from
invasion of unwanted substances. - ANSWER Skin, mucous
membrane, hairs, white blood cells, t cells, antibodies, lymph
system.
First line of defence:
Mechanical barriers - intact skin and mucous membranes
Chemical barriers - tears, stomach acids saliva, perspiration
Second line of defence:
Phagocytes - white blood cells that digest and destroy micFirst
line of defence:
Mechanical barriers - intact skin and mucous membranes