Structures
What body system contains the heart, veins, and arteries?
Circulatory system
What body system contains muscle fibers?
Muscular system
What body system breaks down food into substances that cells can absorb?
Digestive System
What body system brings oxygen into the body and removes carbon dioxide?
Respiratory System
How many bones does the adult body have?
206
What body system contains the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, liver, gallbladder, and pancreas?
Digestive System
What body system contains bones, cartilage, ligaments, and tendons?
Skeletal System
What body system fights bacteria and viruses?
Immune System
What body system provides structure and support to the body?
Skeletal System
How long is the small intestine?
About 22 feet long (3.5 times your height)
What body system has white blood cells that fight bacteria and viruses?
Immune System
What body system contains the kidneys, ureters, and bladder?
Excretory System
What body system works with the skeletal and nervous systems to provide movement?
Muscular System
What body system receives stimuli from the outside, and sends signals to the body to respond to stimuli and maintain homeostasis?
Nervous System
What percent of the human body is made of water?
60%
What body system has the brain, spinal cord, and nerves?
Nervous System
What body system includes the lungs, airways (nose, mouth, trachea), and diaphragm?
Respiratory System
What body system delivers oxygen and nutrients throughout the body and picks up waste?
Circulatory System
What body system disposes of waste and controls body fluid levels?
Excretory System
About how many times per minute does a person blink?
about 20
What body system includes hair, skin, and fingernails?
Integumentary System
What body system has glands and hormones?
Endocrine System
What body system provides a barrier to keep out dangerous particles and hold in water?
Integumentary system
What body system regulates the body through chemical messages called hormones and helps maintain homeostasis?
Endocrine System
How many bones are humans born with?
about 300