The skin and (the sticky substance protecting inside surfaces of body), are a human’s first line of defense in immune response to foreign invaders.

Either the sebum secreted by the sebaceous glands(because it is mentioned sticky) or white-blood corpuscles which carry out diapedesis and phagocytosis

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.

Ithink the answer is true