1st and 2nd Lines of Defense

1st and 2nd Lines of Defense - 1st and 2nd Lines of Defense...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1st and 2nd Lines of Defense skin - 1st line of defense 15% of an adult’s total weight oil/sweat glands >> low pH on surface >> many microorganisms killed prevents water loss lyxozyme - enzyme in sweat that digests bacterial cell walls stratum corneum - outer skin layer o cells constantly injured, worn, replaced stratum basale - innermost skin layer, produces new skin cells stratum spinosum - broad layer in middle of epidermis dermis - skin layer below epidermis, gives structural support mainly adipose (fat) cells below dermis other surfaces leading to outside - digestive tract, respiratory tract, urogenital tract o mucus traps microorganisms in bronchi, cilia sweeps mucus towards glottis to stomach cellular counterattack - 2nd line of defense uses nonspecific cellular/chemical devices to defend goes after any infection w/ leukocytes identity of pathogen doesn’t matter lymphatic system = central location for distribution of immune system cells
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

1st and 2nd Lines of Defense - 1st and 2nd Lines of Defense...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online