Respiratory & Circulatory
What human body systems incorporate the nose, trachea, lungs, heart, blood vessels that support life processes?
Respiratory & Circulatory
What bone protects your brain?
Skull
A model shows the stomach, intestines, and esophagus working together. What does this model represent?
Digestive System
Cells
What is an example of an organ in the human body?
heart
lungs
stomach
What organ takes in oxygen from the air?
Lungs
What happens to a muscle when it contracts?
It becomes shorter/tighter and helps cause movement.
What structures carry messages between the brain, spinal cord, and the rest of the body?
Nerves
What is an example of an organ system?
Digestive
Muscular
Respiratory
Circulatory
Nervous
Skeletal
What are the five levels of organization in the human body, from smallest to largest?
Cell → Tissue → Organ → Organ System → Organism
What carries blood throughout your body?
Blood Vessels
A student falls and lands on their back. Which part of the skeletal system helps protect the spinal cord?
spine
Your brain tells you that you are hungry. Which body system helps turn the food you eat into nutrients your body can use?
The digestive system.
What is an organism?
A complete living thing
Which two body systems work together to move your body when you decide to walk or run?
Muscukar and Skeletal Systems
Explain what happens to oxygen after it enters the lungs.
Oxygen moves from the lungs into the blood, which carries it through
The human arm is made of various types of muscle. What kind of structure in the human body is a muscle?
Organ
You touch something hot and quickly pull your hand away. How does the nervous system help you respond?
Nerves send information about the heat to the nervous system, which processes the information and sends a message to the muscles to move your hand away.
Your body is made of many different types of cells. Why might cells have different shapes and structures?
Different cells have different functions, so their structures help them perform their specific jobs.
Your body is made up of many different organ systems. Why is it important for the organ systems to work together?
Each system performs different functions, but they depend on one another to perform the functions necessary to keep the organism alive.
Explain how the heart, blood, and blood vessels work together.
The heart pumps blood, and blood vessels carry the blood throughout the body to deliver oxygen and nutrients and carry away wastes
A person's muscles are working properly, but their bones cannot move because of a problem with the joints. How would this affect the person's movement? Explain.
The person would have difficulty moving because muscles pull on bones at joints to produce movement. If the joints cannot move properly, the skeletal and muscular systems cannot work together effectively.
Your body needs nutrients from food to function properly. Explain how the digestive and nervous systems each contribute to keeping your body working.
The digestive system breaks down food and absorbs nutrients. The nervous system controls and coordinates body activities and helps the body respond to information.
A student says, "An organ system is just one organ that performs one job." Is the student correct? Explain.
No. An organ system is made of multiple organs and structures that work together to perform important functions.
A student is running during PE. Their heart beats faster, they breathe faster, and their muscles need more oxygen. Which three body systems are working together, and what does each system do?
The respiratory system brings oxygen into the body, the circulatory system carries oxygen in the blood, and the muscular system uses the oxygen to help the muscles work and move the body.