What is the smallest living thing?
Cells
What is the structural level of organization?
Chemical
Cells
Tissue
Organ
Organ system
Organism
Which chemicals are necessary for life?
C- carbon
H-hydrogen
O-oxygen
N- nitrogen
P- phosphorus
Ca-calcium
S-sulfur
What are the 4 main tissue types?
Epithelial- covers
Muscle- moves
Connective-connects, pads
Nervous-sends signals
What are the 11 organ systems?
What is in the integumentary system?
What is in the skeletal system?
What is in the muscular system?
What is in the lymphatic system?
Spleen
What is in the respiratory system?
What is in the digestive system?
What is in the nervous system?
What is in the endocrine system?
Hormones
What is in the cardiovascular system?
-heart and blood vessels
What is in the urinary system?
What is the reproductive system?