Skeletal System
Nervous System
Circulatory System
Digestive System
Respiratory System
100

How many bones are in the human body?

206

100
All of the nerves in the human body originate from this.
The Brain
100
These two things transport blood through the body.
What are veins and arteries?
100
This is the first way that food is broken down into smaller pieces in the digestive system.
Chewing
100
The body breathes in oxygen and breathes out this gas.
Carbon Dioxide
200
These are the two bones in the forearm.
Radius and Ulna
200
What is the name of the fluid inside the skull?
Cerebrospinal fluid
200
When the heart completely stops beating:
Cardiac Arrest
200
This is how we move food from our mouth into our stomach.
What is swallow?
200
These are the two passageways that air enters and leaves the body as we inhale and exhale.
What are through the nose and mouth?
300
What is the bone that bears the most weight in the leg?
Tibia
300
What do the vertebrae protect?
Spinal Cord
300
The heart has this many compartments.
4
300
This is the name of the tube in the digestive system that goes from the mouth to the stomach.
What is the esophagus?
300
What tube connects the mouth to the lungs?
Trachea
400
What is the purpose of bone marrow?
Produces red blood cells and lymphocytes (white blood cells).
400

What are the name of the chemicals used by nerves to conduct signals in the brain?

Neurotransmitters

400
This is the name of the artery that blood gets pumped through as soon as it leaves the heart.
What is the aorta?
400
What are some signs or symptoms of kidney failure?
Swelling of abdomen, dark urine, infrequent urination, nausea or vomiting, metallic taste, seizures, coma
400
This flap keeps food from entering your respiratory system when you swallow.
What is the epiglottis?
500
What is another name for the collarbone?
What is the clavicle?
500
These are the two major functions of nerves.
What are sense feelings (pain, heat, etc) and move muscles
500
This is the name of the vein which blood passes through right before it re-enters the heart.
What is the vena cava?
500
What are the hairlike structures that line the digestive tract and facilitate digestion called?
Villi
500
What are the tiny air sacs in the lungs called and what is their function?
Alveoli - exchange oxygen and carbon dioxide
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