Organ Systems
Hierarchy of Living Things
Fight or Flight Interactions
100

This system includes the heart and blood vessels, and is responsible for transporting oxygen, nutrients, and waste throughout the body.

The Circulatory System (Cardiovascular)

100

What is the relationship between cells and tissues?

Tissues are made up of different types of cells working together.

100

During the fight-or-flight response, this system releases adrenaline to prepare the body for quick action.

The Endocrine System

200

This system includes the lungs and is responsible for bringing oxygen into the body and removing carbon dioxide.

The Respiratory System

200

What is the relationship between organs and organ systems?

Organ systems are made up of different types of organs working together. 

200

This system speeds up breathing during fight-or-flight to deliver more oxygen to the body.

The Respiratory System

300

This system allows the body to move, maintain posture, and produce heat. It works closely with the skeletal system.

The Muscular System

300

Why do organs have different types of tissues?

So that organs can complete specific functions

300

This system carries adrenaline and oxygen through the blood to muscles during fight-or-flight.

The Circulatory System

400

This system breaks down food into nutrients the body can use for energy, growth, and repair.

The Digestive System

400

What is the hierarchy of living things from largest to smallest?

Organism > Organ System > Organ > Tissue > Cell

400

In the fight-or-flight response, these TWO systems work together when adrenaline increases heart rate, and blood delivers more oxygen to the muscles.

Circulatory and Endocrine

500

This system processes information and coordinates the body’s response using electrical signals carried by neurons.

The Nervous System

500

Sort the following terms in order of complexity of an organism from smallest to largest

Skin, Human, Skin Cell, Integumentary System, Epidermis Tissue

Skin Cell < Epidermis Tissue < Skin < Integumentary System < Human

500

In fight-or-flight, the brain sends signals that cause muscles to tense and prepare for action. Identify two systems and explain how their interaction helps the body respond quickly to danger.

The Nervous and Muscular Systems