33. A gland consists of one or more cells that make and secrete a particular product. Endocrine glands are also called ductless glands and they produce hormones which travel to a specific target organism to prompt it to do something a certain way. Exocrine glands are far more numerous than endocrine glands. All exocrine glands secrete their products onto body surfaces or into body cavities. Multicellular glands are very complex and have an epithelium derived duct and a secretory unit whereas unicellular glands are more simple and have one single cell that is sprinkled onto the epithelial lining.
34. The four main types of connective tissue are connective tissue proper, cartilage, bone tissue and blood. In addition to the function of purely connecting body parts, connective tissue also binds and supports body parts, protects them, insulates the body and in the case of blood provides a source of transportation for substances within the body.
35. The cutaneous membrane is your skin. It is an organ system consisting of keratinized stratified squamous epithelium firmly attached to a thick layer of dense irregular connective tissue. Mucous membranes line body cavities that open to the exterior, such as those of the hollow organs of the digestive, respiratory and urogenital tracts. Serous membranes are the moist membranes found in closed ventral cavities. It consists of simple squamous epithelium resting on a thin layer of loose connective tissue.