The Basics

The body system that consists of the bones, their associated cartilages, and the joints.

• Skeletal System

• Cranium

• Bone System

• Mandible

Any changes or signals in the environment that can make an organism react

• Stimulus

• Enzyme

• Hormones

• Homeostasis

A type of protein that speeds up a chemical reaction in a living thing

• Stimulus

• Enzyme

• Hormones

• Homeostasis

The condition where an organism’s internal environment is kept stable despite the changes of the external environment

• Stimulus

• Enzyme

• Hormones

• Homeostasis

A response within a system that influences the activity of that system

• Internal Stimulus

• Feedback Mechanism

• Force

• Chemical Change

The body's ability to keep the internal balance of the body stable

• Homeostasis

• Feedback Mechanism

• Stable

• Force

integumentary

• takes in oxygen and releases carbon dioxide

• allows locomotion and facial expressions; maintains posture

• seals and cover body to protect against infection

digestive system

• removes waste

• takes in oxygen

• breaks down food

excretory system

• sends messages to contract muscles and respond to environment

• removes solid waste

• protects and supports organs and movement

respiratory system

• takes in oxygen and releases carbon dioxide

• different types of tissues

• skin, mucous membranes, hair, and nails