what makes up the skin of the body and the lining of the respiratory and digestive tracts?

Answer 1

Lining of the Gastro-intestinal Tract:
1. Nonciliated simple columnar epithelium (Stomach to anus, gallbladder)
2. Stratified squamous epithelium (Mouth lining, esophagus)
3. Stratified columnar epithelium (small areas in anal mucous membrane)
4. Exocrine gland (Salivary glands into oral cavity, Pancreas to small intestine)
5. Endocrine gland (Pancreas)
6. Dense irregular connective tissue (Liver)
7. Smooth muscle tissue (Stomach, intestines, gallbladder)
8. Reticular loose connective tissue (Stroma of liver)

Lining of the Respiratory System
1. Simple squamous epithelium (Alveoli)
2. Ciliated simple columnar epithelium (Upper Respiratory tract)
3. Pseudostratified columnar epithelium (Goblet cells in the trachea)
4. Elastic connective tissue (Lung tissue, trachea, bronchial tubes, true larynx)
5. Hyaline cartilage (Larynx, Trachea, Bronchi, bronchial tubes)
6. Elastic cartilage (Laryngeal epiglottis)
7. Smooth muscle tissue (airways to the lungs)

Skin
1. Stratified squamous epithelium (Keratinized variety forms outer layer)
2. Stratified cuboidal epithelium (Sweat ducts)
3. Exocrine glands (Sweat glands)
4. Areolar connective tissue (Subcutaneous layer, papillary region of dermis)
5. Adipose tissue (Subcutaneous layer)
6. Dense irregular connective tissue (Reticular region of dermis)

Everything is here. It is very specific. These are Histological compositions that relates to your question.

Answer 2

Squamous epithelial tissue lines the respatory/digestive tracts. Columnar epithelial in the stomach/intestines.

I wouldn't include glands, Kyle, nor the liver/pancreas as they are not technically part of the digestive tract they just open into it, otherwise your answer is spot on (thumbs up mate ;-) )

Answer 3

Epithelial Cells (Epithelium)