What is the best description of an endocrine gland?
1. | They secrete mucus, saliva, ear wax and digestive enzymes |
2. | Their products are released through ducts or tubes |
3. | Unlike exocrine glands, they are not modified epithelium |
4. | Their secretions are secreted directly into the fluid bathing the gland |
1. | dry surface of the skin |
2. | moist surface of buccal cavity |
3. | inner lining of ducts of salivary glands and pancreatic ducts |
4. | lining of stomach and small intestine |