Levels of Organization
What is the smallest structural unit of the body?
What is a cell?
This system includes skin, hair, and nails.
What is the integumentary system?
Define homeostasis.
What is the maintenance of a stable internal environment?
What is it called when blood vessels narrow?
What is vasoconstriction?
What type of feedback reduces the original stimulus?
What is negative feedback?
These are groups of similar cells working together.
What is tissue?
This system moves blood through the body.
What is the circulatory system?
Which fuel source is used in thermoregulation?
What is glucose?
What body response produces heat through muscle contraction?
What is shivering?
Give one example of a negative feedback loop.
What is thermoregulation or blood sugar regulation?
This level includes organs working together for a common purpose.
What is an organ system?
This system breaks down food for absorption.
What is the digestive system?
What is glycogen?
What is the stored form of glucose?
What is it called when blood vessels expand to release heat?
What is vasodilation?
Give one example of a positive feedback loop.
What is blood clotting or childbirth contractions?
Which type of tissue conducts electrical signals?
What is nervous tissue?
The kidneys and bladder are part of which system?
What is the urinary system?
What is the role of insulin?
What is lowering blood glucose?
How does sweating cool the body?
What is evaporation?
What type of feedback increases the original stimulus?
What is positive feedback?
Name all 5 levels or organization in order.
What are cells, tissues, organs, organ systems, organism?
Which two systems work closely to regulate body temperature?
What are the nervous and endocrine systems?
What hormone increases blood glucose?
What is glucagon?
Which part of the brain controls thermoregulation?
What is the hypothalamus?
What three components make up a feedback loop?
What are the sensor, control center, and effector?