Systems in the Human Body
✓Circulatory System
(heart, blood, vessels)
✓Respiratory System
(nose, trachea, lungs)
✓Immune System
(many types of protein, cells, organs, tissues)
✓Skeletal System
(bones)
✓Excretory System
(lungs, large intestine, kidneys)
✓Urinary System
(bladder, kidneys)
✓Muscular System
(muscles)
✓Endocrine System
(glands)
✓Digestive System
(mouth, esophagus, stomach, intestines)
✓Nervous System
(brain, spinal cord, nerves)
✓Reproductive System
(male and female reproductive organs)