circulatory system
Your heart is really a
Muscle
All ecosystems get energy from the ____
sun
Plants use a process called_____ to produce their own food.
photosynthesis
These cut up and grind up large pieces of food
teeth
alveoli, not ravioli
How long does it take your heart to pump blood to every cell in your body?
Under 1 minute
All aquatic ecosystems are in or near
water
Most plants are green because they contain ___
Chlorophyll
In this part of the system, food changes into nutrients and energy that your body can use
small intestine
The respiratory system brings brings oxygen to the red blood cells and gets rid of ________
carbon dioxide
Valves in the heart work to keep blood _______
flowing in one direction
T or F
In all ecosystems, organisms have to compete for food and the resources they need to stay alive
true
All plants take in light and CO2.
What are two things that a plant releases?
oxygen and water vapor
The ______breaks down food into into simple chemicals or nutrients
the digestive system, duh!!
Why do we react to an object faster with our hands than our feet?
because our nerves have a longer way to travel to our feet
The heart has four chambers. Name 2 of them!
The left and right atria or atrium
The left and right ventricles
Home composters use this type of work for decomposing household waste (same type of worm we used in class)
redworms
What is sugar? Think plants!
The nutrient that cells, plants use for energy
The last bits of food move from the small intestine into this part of the digestive system where it is stored for waster
large intestine
What are the three main parts of the brain?
cerebellum, cerebrum, and brain stem
The absolute smallest arteries in your body are called_____
capillaries
What three of the four things that all organisms need for survival
food, water, shelter, space
Where is all food produced in a plant?
In the green parts of the plant-
Describe what happens in your stomach after you have eaten-
gross, who would ask this question,
food is stirred, mashed, and mixed with acids to help break it down into chyme- yuck!
The brain and spinal cord make up the
central nervous system