The changing of food to a form usable by the body.
Digestion
These tough blood vessels take blood from, or away from, the heart.
Arteries
This pathway is so important, that if it is cut or severed it can lead to paralysis.
Spinal Cord
This series of 12 bones expands when you inhale and protects the lungs and heart.
Rib Cage
Your heart normally beats this many times per minute.
Between 80 to 90 times per minute.
This organ in a mother filters and controls food molecules received by a baby in the womb.
Placenta
These hard-working cells in the blood contain hemoglobin.
Red Corpuscles (Red Blood Cells)
We call them nerve cells, but they have a scientific name too. What is the scientific name?
Neuron
Every time you breathe out, this gas is released into the air.
Carbon Dioxide
These types of actions, such as the beating of your heart or breathing, are automatic and controlled by your brain.
Involuntary Actions
These bean-shaped organs lie in the back of the abdominal cavity, and turn wastes into urine which empties into the bladder.
Kidneys
When food molecules combine with oxygen, this happens.
Oxidation
Nerve cells "speak" to each other through these connections, or spaces where they do not actually touch.
Synapses
Also called the windpipe, this tube starts at the pharynx and brings oxygen to the lungs.
Trachea
A pre-born baby is surrounded by this protective liquid and can actually drink it!
Amniotic Fluid
This is the organ that contains villi that absorb nutrients from the food we eat.
Small Intestine
The body makes these types of cells to fight disease.
White Corpuscles (White Blood Cells)
Name the nerve impulses that travel to the body parts.
Motor Impulses
This muscle is the floor of the rib cage and moves down when we exhale.
Diaphragm
A baby is how old when his/her heart is able to start pumping its own blood?
21 days
The name for the passageway that takes the food we ingest through our bodies.
Alimentary Canal
The largest blood vessel, it takes blood directly from the heart and eventually branches out into smaller and smaller blood vessels.
Aorta
Why is this system mentioned here? Because it works very closely with the Nervous System. Name these glands.
Endocrine
The windpipe divides into two tubes which feed the lungs and are filled with cilia and mucous. Name these two tubes.
Bronchial Tubes
This structure in cells controls the number of times a cell can divide and is linked to our longevity.
Telomere