1. KINGDOM: Animalia PHYLUM: Chordata CLASS: Mammalia Rattus norvegicus
Life Processes - Rat
KINGDOM: Animalia  PHYLUM: Chordata  CLASS: Mammalia  
Rattus norvegicus  

2. Rat

3. Movement
Four Legs – includes muscles, cartilage, ligaments and tendons for movement

4. Body Covering
Fur
Skin – protects deeper organs from injury due to bumps, chemicals, bacteria, and dehydration
Skin helps to regulate body temperature
Skin allows excretion of salts and urea

5. Support
Skeleton: full skeletal system with cartilages, tendons, ligaments, and joints
Supports and protects internal organs
Provides attachments points for muscles
Stores minerals
Has cavities for blood cell formation

6. Nutrition
Scavengers
Mouth, esophagus, stomach, small and large intestines, teeth, salivary glands, liver, gallbladder, and pancreas
Breaks down ingested goods to tiny particles, which can be absorbed into the blood for delivery to the body’s cells

7. Respiration Nose, pharynx, larynx, trachea, bronchi, and lungs
Keeps the blood continuously supplied with oxygen while removing carbon dioxide
Contributes to the acid-base balance of the blood via its carbonic acid/carbonate buffer system

8. Circulation Heart, blood vessels, and blood
Primarily a transport system that carries blood containing oxygen, carbon dioxide nutrients, wastes, ions, hormones, and other substances to and fro the cells where exchanges are made
Pumping action of the heart propels blood through the blood vessels
Protects body with blood clots, antibodies, and other protein molecules in the blood

9. Excretion Kidneys, ureters, urinary bladder, and urethra
Allows the body to rid itself of nitrogen-containing wastes, which result from the breakdown of proteins and nucleic acids by the body’s cells
Maintains water, electrolyte, and acid-base balance of blood
Undigestible foods excreted as feces

10. Responses Brain, spinal cord, nerves, and special sense organs
Allows body to detect changes in its internal and external environment and to respond to such information by activating appropriate muscle groups

11. Reproduction Reproduction – sexual
Germ cells – male – sperm; female – egg
Male structures – testes, scrotum, penis and duct system
Female structures – ovaries, uterine tubes, uterus and vagina