Body organization
The basic unit of structure and function in a living thing.
Cell
This system's main job is to exchange oxygen and carbon dioxide between the blood and the air.
What is the Respiratory System?
The key organ of the skeletal system that provides the body's structure.
What is a bone?
The Respiratory System brings in oxygen, and this system is responsible for delivering that oxygen to every cell in the body.
What is the Circulatory (or Cardiovascular) System?
The maintenance of a stable internal environment in the body, regardless of changes in the external environment.
What is homeostasis?
A group of similar cells working together to perform a specific function, like muscle or nerve.
What is a tissue?
This system is responsible for all forms of voluntary movement, as well as the involuntary movements of the heart and internal organs.
What is the Muscular System?
The main organ that pumps blood in the circulatory system.
What is the heart?
When you run, your Muscular System needs more oxygen, so it sends signals through this system to increase your heart rate.
What is the Nervous System?
This type of tissue is specialized for contraction and allows for movement.
What is muscle tissue?
The smallest level in the body organization hierarchy that is considered alive and can perform all life functions.
What is a cell?
This system transports blood, which carries oxygen, nutrients, and waste, to and from all parts of the body.
What is the circulatory system ?
These two spongy organs are the primary site of gas exchange in the respiratory system.
What are the lungs?
After the Digestive System breaks down a sandwich, the nutrients are absorbed into the bloodstream of this system for transport.
What is the Circulatory (or Cardiovascular) System?
The protective organ that is the largest by mass in the human body.
what is skin?
The level of organization higher than a tissue but lower than an organ system, often featuring multiple tissue types, such as the stomach or the brain.
The process this system performs to break down food into usable nutrients and absorb them into the bloodstream.
The control center of the nervous system that processes information and directs action.
What is the brain?
This system, made of bones, stores calcium, which is a vital mineral needed for your Muscular System to contract.
What is the Skeletal System?
The two main organ systems responsible for communication and control of the entire body.
What are the Nervous System and the Endocrine System?
The correct order of organizational levels from smallest to largest: Cell, Organ System, Organ, Tissue.
What is Cell, Tissue, Organ, Organ System?
This system, which includes the kidneys and bladder, works to filter waste products from the blood and remove them as urine.
What is the Excretory (or Urinary) System?
The large organ in the digestive system responsible for producing bile and detoxifying blood.
What is the liver?
The kidneys are part of the Excretory/Urinary System, which cleans waste from the blood provided by this system, ensuring the blood is purified.
What is the Circulatory (or Cardiovascular) System?
The small, finger-like projections in the small intestine that greatly increase the surface area for nutrient absorption.
What are villi?