Systems
What are the four levels of organization in the human body?
Cells, tissues, organs, and body systems
Which body system consists of the heart and blood vessels
The circulatory system
What is the major organ of the circulatory system?
The heart
What is the smallest unit of life?
cells
Which body system consists of the nose, throat, trachea and lungs?
The Respiratory system
Which blood vessels lead (or leave) from the heart?
The arteries
What are groups of similar cells that perform a specific function?
tissues
Which body system consists of the mouth, esophagus, stomach, small intestine and large intestine
The digestive system
Which blood vessels lead back to the heart?
The veins
What is a group of tissues that perform a function
organs
Which body system consists of the brain, spinal cord and nerves?
The nervous system
What is the name of the vessel that joins the arteries and veins?
The capillaries
What are groups of organs working together to perform a function?
Body system
Which human body system interacts with each cell of the body?
The circulatory system
Which organ in the circulatory system allows oxygen, nutrients and other substances to pass from the blood into the body cells.
The capillaries