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How Much Do You Actually Know About Butts?

You're either right or wrong — no ifs, ands, or butts.

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  1. 1. What is this big bone just above the butt?

    Eraxion / thinkstockphotos.com
    Deltoid
    Sacrum
    Pelvis
    Lumbar coccyx
    Correct!
    Wrong!

    This is the sacrum!

    The sacrum is a big, shield-shaped bony structure at the bottom of the spine. It's connected to the pelvic bone on either side, so it helps to stabilize and strengthen the entire pelvis. From the outside, it's the hard part of your lower back, just above the butt crack.

    This is the sacrum!
    Via Eraxion / thinkstockphotos.com
  2. 2. What are hemorrhoids?

    chingyunsong / thinkstockphotos.com
    Clumps of overgrown cells lining the colon
    A sexually transmitted infection (STI) in the anus
    Inflamed veins in the rectum or anus
    Cysts on the skin of the butt due to infected hair follicles
    Correct!
    Wrong!

    Hemorrhoids are inflamed, swollen veins in the rectum and anus!

    Hemorrhoids located inside the lower rectum are called internal hemorrhoids, while those around the anus are called external hemorrhoids. Symptoms include pain, itching, and bloody stool. Causes range from straining during bowel movements, chronic diarrhea, and increased pressure from pregnancy. Hemorrhoids are a common problem and are usually treated with lifestyle changes or creams. Make sure to see your doc if you have any of those symptoms!

    Hemorrhoids are inflamed, swollen veins in the rectum and anus!
    Via JFalcetti / thinkstockphotos.com
  3. 3. What is this big, round booty muscle called?

    decade3d / thinkstockphotos.com
    Gracillis
    Gluteus maximus
    Buttocks tendon fasciae
    Patella
    Correct!
    Wrong!

    This is the gluteus maximus!

    The gluteus maximus is the main outer muscle in the butt, so it forms the shape of your booty! It starts at the tailbone and attaches to the femur and other bones in the leg. It allows the hip joint to extend so the thigh can rotate. You use it to stand up, do squats, climb stairs, and dance...or twerk.

    This is the gluteus maximus!
    Via decade3d / thinkstockphotos.com
  4. 4. True or false: The gluteus maximus is the largest muscle in the body.

    Nikolas_jkd / thinkstockphotos.com
    True
    False
    Correct!
    Wrong!

    This is true!

    It's one of the strongest muscles in the body, too. The gluteus maximus allows us to stand up and sit down, and also keeps the body stable when you're standing erect for long periods of time — so it's really important!

    This is true!
    Via yodiyim / thinkstockphotos.com
  5. 5. What's this little bone at the very tip of your spine called?

    deacde3d / thinkstockphotos.com
    Lumbar radialis
    Coccyx
    An extra lumbar vertebrae meant for a tail that only some people are born with
    Gluteus bone
    Correct!
    Wrong!

    This is the coccyx!

    The coccyx, also called the tailbone, is a small triangular bone made up of three to five partially fused vertebrae located under the sacrum. The coccyx is attached to muscles, tendons, and ligaments in the butt and helps to stabilize your body when you are in a sitting position. You can actually break the coccyx if you fall too hard on your butt, so be careful out there!

    This is the coccyx!
    Via BodyParts3D / Wikicommons / commons.wikimedia.org
  6. 6. What is the correct pathway of ~poop~?

    ikopylov / thinkstockphotos.com
    Small intestine --> colon --> anus --> rectum
    Rectum --> small intestine --> colon --> anus
    Colon --> small intestine --> anus --> rectum
    Small intestine --> colon --> rectum --> anus
    Correct!
    Wrong!

    Poop travels from the small intestine to the colon, then to the rectum, and then it exits from the anus.

    Food first travels through the small intestine where it's broken down by enzymes so that nutrients can be absorbed. This leaves behind a combination of water, electrolytes, and waste products — aka poop. The poop is then pushed through the large intestine (colon) by waves of muscular movement into the rectum, which stretches and expands — creating the sensation of needing to poop. Finally, poop exits the body through the anus, which relaxes as the rectum contracts, to push it out. If this process goes too fast, it can result in diarrhea. If it goes too slow, you might feel constipated.

    Poop travels from the small intestine to the colon, then to the rectum, and then it exits from the anus.
    Via kowalska-art / thinkstockphotos.com
  7. 7. What are the muscles located on either side of the booty called?

    decade3d / thinkstockphotos.com
    Adductor longus
    Hip extensor
    Radialis
    Gluteus medius
    Correct!
    Wrong!

    This is the gluteus medius!

    The gluteus medius muscles makes up the outer, back region of the thighs, above either side of the butt. They help to rotate the thighs, moving them out and away from the body, while also providing support to the pelvis. These muscles also keep the pelvis from dropping while walking.

    This is the gluteus medius!
    Via decade3d / thinkstockphotos.com
  8. 8. How many times do people fart, on average, each day?

    szefei / thinkstockphotos.com
    1–5
    6–12
    13–21
    24–32
    Correct!
    Wrong!

    People fart 13 to 21 times on average each day!

    Yes, people actually fart that much, on average, in one day! It happens when there's gas in the digestive tract, which gets there one of two ways: We swallow air or carbonation while eating, and if it doesn't leave the stomach by burping, it goes into the intestines and exits the body as a fart; another culprit is bacteria in the large intestine breaking down undigested carbohydrates, which releases gas and comes out as a fart. Either way, farting is pretty normal.

    People fart 13 to 21 times on average each day!
    Via VladimirFLoyd / thinkstockphotos.com
  9. 9. Can you get melanoma (the deadliest form of skin cancer) on your butt cheeks even if they've never been directly exposed to the sun?

    Fly_dragonfly / thinkstockphotos.com
    Yes, you can get melanoma on your butt even if it's never been exposed to sunlight.
    No, you can't get melanoma on your butt if it's never been exposed to sunlight.
    Correct!
    Wrong!

    Yes, you can get melanoma on your butt!

    You can definitely get melanoma on your buttcheeks, even if they've never seen the light of day. It's actually more common than you might think, because people tend to overlook the skin of the butt when they check for skin irregularities or suspicious moles. So don't forget to pay attention to your butt! Here's a skin self-exam from the American Cancer Society to get you started. If you're concerned about skin cancer, visit your doctor to get a screening.

    Yes, you can get melanoma on your butt!
    Via ttsz / thinkstockphotos.com

How Much Do You Actually Know About Butts?

You're pretty clueless about butts!

Guess the booty isn't your best subject. But don't get too bummed, nobody's perfect! We hope you at least learned a thing or two from taking this quiz — keep studying and you won't fall so far behind!

You're pretty clueless about butts!
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You definitely know your butts!

You keep studying — your butt knowledge will grow in no time!

You definitely know your butts!
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You are a butt expert!

Give yourself a pat on the back (or butt!). When it comes to butts, you pretty much know it all — from bones and muscles to digestion and disease, and everything in between. We hope you put that butt expertise to use!

You are a butt expert!
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Anatomical information sourced in part from:

The Princeton Review Anatomy Coloring Workbook, 3rd Edition, I. Edward Alcamo, PhD, Pengiun Random House 2012.

• The Medline Plus Information Database of The National Institute of Health (NIH) and US National Library of Medicine.

The Mayo Clinic

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