Layers of epithelial tissue that serve as barriers to pathogens is called

The correct answer is: Mucus membrane.

Explanation:

The lining of the epithelial tissue forming the mucus membrane contains some specialised cells which are called the Goblet cells.These cells secrete a slippery substance called the Mucus.The Mucus is a dense, aqueous and slippery substance that is composed of anti-microbial enzymes like lysosyme, immunoglobulins (antibodies) and glycoproteins like mucins.The mucus secreting cells line the internal tracts of the body that come into contact with outside environment, like the respiratory tract, alimentary canal, urino-genital tract.If any microbial pathogen gain access into any of these tracts the lysosyme in the mucus causes the microbial cells to undergo lysis, hence killed. The immunoglobulins, on recognising a pathogen, activate the immune cells of the body to fight against the intruding pathogen.

It allows water to resist freezing and thawing cycle.

If these are the missing choices: a. to determine skin temperature, place the back of your hand against the patient's skin.b. determine body temperature by touching the patient's hands and feet.c. skin temperature will tell you very little about this patient's condition or well-being.d. the patient's skin temperature and color will likely be warm and red.my answer is: a. to determine skin temperature, place the back of your hand against the patient's skin. using the back of the hand to check for temperature rather than the palm is more effective because the back of the hand has more nerves that can feel and transmit the temperature than the palm.