lymph nodes, spleen, lymphatic vessels 2. bones, cartilages, ligaments 3. thyroid, thymus, pituitary integumentary 4. skin, nails, hair 5. trachea, bronchi, alveoli 6. uterus, ovaries, vagina 7. arteries, veins, heart 8. esophagus, large intestine, rectum

Which has the highest level of organization (i.e., is the most complex and includes the others)?   Question 1 options:   Organs   Cells   Organ systems   Organisms   Tissues

In this assignment let us assume that your class are a group of expert biologist task with understanding the invading aliens. Both are approximately the size of a human but does not walk up right. One is deployed on land resembles a praying mantis and the other is a crab that can go on land for short periods at a time. Using only conventional weapons (no chemical or biological warfare) what anatomical system would you recommend as a target of attack and why? You are allowed to expand your armaments as long as they are within the acceptable definition of conventional warfare.

The respiratory system is capable of absorbing oxygen and excreting carbon dioxide. The digestive system absorbs nutrients from the diet and excrete indigestible material including wastes. Likewise, the urinary system is capable of absorbing and excreting water and electrolytes according to the needs of the body. These functions may appear to be distinct and separate from each other, but the systems are so organized that they are interdependent on each other and together contribute to the welfare of the body by keeping it in balance or in a state of homeostasis. Create a concept map that illustrates the physiology of acid base balance that unites the three systems (Respiratory, Digestive and Urinary systems) together.