Levels of Organization
Name the smallest unit of life in living things.
What is a cell?
The heart, blood, arteries, veins, and blood vessels are parts of this system.
What is the circulatory system?
This system supports the body, protects organs, works with muscles to allow movement, stores minerals, and produces blood cells in bone marrow.
What is the skeletal system?
This system forms the body’s first line of defense against germs, helps prevent water loss, regulates temperature, and detects touch, pressure, pain, and temperature.
What is the integumentary system?
When you kick a ball, one system sends signals, another contracts, and allows the bones to move. Name all three systems.
What are the nervous, muscular, and skeletal systems?
A group of similar cells working together to carry out a particular function.
What is a tissue?
The nose, trachea, bronchi, and lungs are parts of this system?
What is the respiratory system?
This system helps our bodies move, maintains posture, stabilizes joints, generates heat, and moves materials through internal organs.
What is the Muscular System?
This system recognizes and attacks germs, helps remove infected or damaged cells, and remembers certain germs to respond faster in the future.
What is the immune system?
While this body system allows oxygen to enter the lungs, this other system transports that oxygen to active muscle cells and returns carbon dioxide as waste.
What are the respiratory and circulatory systems?
A group of different tissues working together to carry out a particular function.
What is an organ?
The mouth, salivary glands, esophagus, stomach, small and large intestines, liver, pancreas, and gallbladder are parts of this system.
What is the digestive system?
This system breaks down food, absorbs nutrients and water, and eliminates undigested solid material as waste.
What is the digestive system?
This system detects changes inside and outside the body, processes information, and controls all the body activities.
What is the nervous system?
After a meal, one system breaks down food and absorbs nutrients while another transports those nutrients to cells throughout the body. Name both systems.
What are the digestive and circulatory systems?
A group of organs working together to carry out a particular function.
What is an organ system?
The brain, spinal cord, and nerves are parts of this system.
What is the nervous system?
This system brings oxygen into the body, removes carbon dioxide, and helps produce sounds for speech.
What is the respiratory system?
Through the kidneys, this system removes wastes from blood, produces urine, and helps balance water, salts, and acids in the body.
What is the excretory system?
Body cells produce wastes that enter the blood. One system transports those wastes to the kidneys, and another filters them out and removes them in urine. Name both systems.
What are the circulatory and excretory systems?
A group of organ systems working together carrying out a specific function.
What is an organism?
The kidneys, ureters, urinary bladder, and urethra are parts of this system.
What is the excretory system?
This system transports oxygen, nutrients, hormones, and wastes; distributes heat; and carries cells that fight infection, and it helps your blood clot.
What is the circulatory system?
This system is chemical messengers that regulate growth and development, release needed hormones to regulate blood sugar and respond to stress.
What is the endocrine system?
Bone marrow produces infection fighting cells, blood carries them through the body, and those cells attack germs. Name the three systems working together.
What are the skeletal, circulatory, and immune systems