Circulatory System
This system moves blood through your body
The circulatory system
This system helps you move
What is the muscular system
This system breaks down food.
Digestive System
This system sends messages through your body.
The nervous system
What is the process of keeping the body balanced?
Homeostasis
This controls what enters and leaves the cell.
Cell membrane
The respiratory system.
What system helps fight infection?
The lymphatic system
What system includes skin, hair and nails?
Integumentary System
What system removes waste from the body?
Excretory System
This organ pumps the blood
Heart
These muscles move when you decide to move
Digestion begins here.
The mouth.
This is the control center for your body.
The Brain
Your body cools down by sweating. This is an example of what kind of feedback?
Negative Feedback
The cell membrane quality that allows some things in but not others.
Semi-permeable (OR selectively permeable)
The organ used for breathing.
The lungs
What part of the lymphatic system contains immune cells?
Lymph Nodes
What protects our body against pathogens?
Our skin!
What organ filters blood to produce urine?
Kidneys
These carry blood AWAY from the heart
Arteries
This muscle works without you thinking and is in your heart.
Cardiac muscles (involuntary)
This part of the digestive system has tiny finger-like structures that increase surface area for absorbing nutrients.
Small intestine's villi
These cells carry messages.
Neurons
When a change keeps increasing and compounding- what kind of feedback is this? (Like in contractions in childbirth)
Positive Feedback
If there are more particles OUTSIDE of a cell than INSIDE, which direction will the particles move?
Into the cell (high concentration to low concentration)
After air enters your trachea, it travels into the two branching tubes that lead to each lung. What are the these tubes called? They each of three layers (primary/secondary/tertiary).
The Bronchii
What is the fluid that circulates in the lymphatic system?
Lymph
What process helps regulate body temperature?
Sweating
What is the structure in the kidney that is multiplied by millions and cleans our body on a molecular level?
The amazing Nephron!
Why are capillaries so small and thin?
To allow exchange of oxygen, nutrients and waste
Why do muscles need bones to help movement?
Muscles pull on bones to create structured movement.
Why is the small intestine soooo long with so many folds?
To absorb as many nutrients as possible
This is the part of the nervous system that includes the brain and spinal cord.
Central Nervous System
Why is negative feedback important?
Why is the cell membrane important for survival?
It controls the transport and storage of materials needed to survive and thrive.
What is the gas taken into the body?
Oxygen
Why might your lymph nodes swell when you're sick?
They are fighting an infection and gathering troops to fight.
What is the outermost layer of skin?
The Epidermis
What is the main job of a nephron in the kidneys?
Filtering waste and extra water from the blood.
If your heart stopped pumping, what would happen to your cells?
They would not get oxygen/nutrients and could die.
If one muscle contracts, what must the opposing muscle do?
Relax!
What would happen if your body couldn't absorb nutrients?
You would lack energy and become unhealthy.
If nerves are damaged, what might happen?
Loss of movement/feeling/response
What might happen if feedback loops didn't work?
The body will become unbalanced and can start a chain reaction of breakdown. (REMEMBER! ALL systems are interconnected.)
What happens if harmful substances enter the cell?
The cell could be damaged or die.
What is the gas removed by the body?
Carbon dioxide
How does the lymphatic system help the circulatory system?
It returns extra fluid to the bloodstream
Why is the skin the body's first line of defense?
it's our personal physical barrier
If nephrons stopped working properly, what could happen?
There would be a build up of waste and infection and lymphatic back-up could happen.