Explain how the skin functions to protect deeper tissues from microbe damage
What will be an ideal response?
The skin forms an unbroken surface and an "acid mantle." Skin secretions are acidic and thus inhibit microbes, such as bacteria. Phagocytes ingest foreign substances and pathogens, preventing them from penetrating into deeper body tissues.
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A vaccine that is reconstituted should be used within ________________________
Fill in the blank(s) with correct word
Which change will increase fluid reabsorption by the capillaries?
a. Decreased interstitial fluid hydrostatic pressure b. Increased capillary blood pressure c. Increased blood osmotic pressure d. Increased interstitial fluid osmotic pressure e. None of the above
All of the following decrease overall cardiac function except
a. acetylcholine. b. NE c. afterload. d. parasympathetic activity. e. vagal activity.
In hyperopia,
a. the eyeball is too short or the lens is too weak. b. a near object is focused behind the retina, even with accommodation. c. a far source of light is focused ahead of the retina. d. both (a) and (b) above. e. both (a) and (c) above.