Biol 2401 Fall 2012
Total Score 50
Answer all questions:
1A. The integument is a complex organization of tissue and components. Name two components of the
integument system and two accessories and with2 their functions:
2X2
1B. What are the organelles of skin that enables the organism to sense cold hot and pressure?
2
1C. Why is a subcutaneous injection with a hypodermic needle a useful method of administering drugs?
1D. What makes the epidermis layer impervious to water from the environment? (Be specific in oyur answer
and mentiona the cell-cell).organization which allows this impermeability).
2
2. These following questions based on the glads and glandular secretions: 2, 2, 4
A. Analysis of a glandular secretion indicates that it contains some DNA, RNA, and membrane components
such as phospholipids. What kind of secretion is this and why?
2B. Unicellular exocrine glands secrete ________________________. The purpose of this secretion in the
respirartory and digestive tracts is
2C. The pancreas is a unique example of both ______________________and _______________________
glands. Name a secretion from each such glands:
3A. Name three differences between