What is the name of the small piece of cartilage at the bottom of the strenum?

Mucous membranes.. a. cover or line external surface of body. b. line internal body surfaces that are in contact with the environment. c. produce antibodies to combat infection. d. secrete sweat, which has antibacterial enzymes.

Answer these and you will be marked this is for 20 points

What is the proper way to determine that someone is unresponsive before administering cpr