Which of these produce tears and secrete enzymes to destroy bacteria and viruses in the eye?
A. Extrinsic eye muscles
B. Lacrimal glands
C. Nasolacrimal ducts
D. Orbicularis oculi
E. Conjunctivas
B. Lacrimal glands
Lacrimal glands produce tears, which contain lysozymes that can destroy bacteria and viruses.
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Which of the following is considered the body's "first line of defense" when preventing infection and injury?
A) Chemotactic reactions B) Anatomic barriers C) Immune response D) Inflammatory response
You must transport a patient with carbon monoxide poisoning to a specialized facility for treatment. Transport time is estimated at an hour and a half. The patient is on a nonrebreather face mask with a continuous oxygen flow of 15 lpm. On the ambulance, you have a G tank with 1,100 psi inside. Knowing that the cylinder constant is 2.41, what action should the EMT take in relation to the amount
of available oxygen and transport time? A) Replace the G cylinder with a full D cylinder. B) Decrease the oxygen flow to 10 lpm for the transport. C) Apply a nasal cannula at 8 lpm for the transport. D) Replace the G cylinder after the transport.