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Which condition can affect just the scalp or the entire body, may be temporary or permanent, and can result from heredity, hormonal changes, medical conditions, or normal aging?
Alopecia (Hair loss)
Which lung is about 10 percent smaller?
A. The right lung
B. The left lung
C. Both lungs are the same size
D. It varies from person to person
B. The left lung - is 10 percent smaller than the right, due to the left-sided position of the heart.
Which disease causes symptoms such as seizures, hallucinations, and paralysis, is most commonly transmitted through bat bites in the U.S. or dog bites in Asia and Africa, is preventable with prompt vaccination after exposure, and becomes fatal once symptoms begin?
Rabies
Which word comes from the Latin term musculus, meaning ‘little mouse,’ because the Romans thought a flexing muscle looked like a mouse moving under the skin?
Muscle
The most common eye color in the world is:
a) Brown
b) Blue
c) Green
d) Black
a) Brown
How many breaths does the average person take each day?
a) 500
b) 1500
c) 15,000
d) 20,000
d) 20,000
Which very contagious disease spreads through close person-to-person contact or contaminated food or water, usually causes mild symptoms, and goes away without treatment but can last for several weeks to months?
Hepatitis A
True or false? Your sense of smell is strongest in the morning.
false
What does mucus do?
a) Filters out harmful bacteria
b) Helps you smell
c) Helps your lungs take in oxygen
d) Stops your nose from collapsing
a) Filters out harmful bacteria
Which contagious disease can cause painful swelling in the parotid salivary glands? (parotitis)
Mumps
Which noncontagious inflammatory skin condition, also known as atopic dermatitis, is characterized by severe itching, redness, oozing, and scaly rashes that can be painful and may cause skin discoloration and blisters?
Eczema
True or false? The number of bones in an infant is more than that of an average human.
True
About how many hairs do most people lose every day?
a) 10 strands
b) 35 strands
c) 50 strands
d) 75 strands
75 strands
How many pints (or liters) of saliva do the salivary glands produce per day?
about 2–3 pints (1.5 litres) of saliva a day
True or false? If you're right-handed, the fingernails on your right hand grow faster.
True
Which type of nerves carry signals to your brain that allow you to touch, taste, smell, and see?
A. Motor nerves
B. Sensory nerves
C. Reflex nerves
D. Autonomic nerves
B. Sensory nerves
True or false? The tongue is the only part of the human body with taste buds.
false
How many muscles do you use when you talk?
a) 45
b) 55
c) 72
d) 87
c) 72
If your digestive tract were stretched out, how long would it be?
A. about 10 feet (3 meters)
B. about 20 feet (6 meters)
C. about 30 feet (9 meters)
D. about 40 feet (12 meters)
C. 30 feet (9 meters)
How fast does air rush out of your nose when you sneeze?
a) Up to 10 miles an hour (16 kph)
b) Up to 25 miles an hour (40 kph)
c) Up to 50 miles an hour (80 kph)
d) Up to 100 miles an hour (161 kph)
d) Up to 100 miles an hour (161 kph)
What's the most commonly broken bone in the human body?
a) Big toe
b) Collarbone
c) Leg
d) Pinky finger
b) Collarbone
How long does it take for a new fingernail to grow and replace a lost nail?
A. 2 to 3 months
B. 4 to 6 months
C. 7 to 8 months
D. 9 to 12 months
B. 4 to 6 months
Which illness can you get after contact with water or soil contaminated by animal urine entering through the nose, mouth, eyes, or broken skin, causes flu-like symptoms, and can progress to the life-threatening Weil’s syndrome in some cases?
Leptospirosis
Which serious mental health condition affects how a person thinks, feels, and behaves, and is characterized by symptoms such as hallucinations, delusions, and disorganized thinking and behavior?
Schizophrenia
Which type of nerves carry signals to your muscles or glands to help you move and function?
A. Motor nerves
B. Sensory nerves
C. Reflex nerves
D. Autonomic nerves
A. Motor nerves