10 most difficult human anatomy riddles A list of ten (out of 45) human anatomy related questions that are the most often answered incorrectly Human anatomy quiz Which reptile subgroup is considered extinct?Synapsids were the largest terrestrial vertebrates in the Permian period, 299 to 251 million years ago, although some of the larger pareiasaurs at the end of Permian could match them in size. very hard 21% AnapsidAnapsid14%DiapsidDiapsid22%SynapsidSynapsid21%None of the above are extinctNone of the above are extinct40%Created by: Tschuka. Statistics based on 1097 answers in 2 languages »bones riddles » How many eyelashes are on the upper eyelid?150-250. The number on the bottom eyelid is significantly lower - about 50-150.very hard 22% 30-5030-5011%50-10050-10034%100-150100-15032%150-250150-25022%Created by: Adols. Statistics based on 3036 answers in 3 languages »face riddles » How is the fear of pregnancy and childbirth called?Tokophobia often leads patients to ask for a Caesarean section. Frequency of appearing: 6-10% pregnancies.very hard 28% mysophobiamysophobia28%erythrophobiaerythrophobia14%haphephobiahaphephobia29%tokophobiatokophobia28%Created by: Paweł Kołodziejczyk. Statistics based on 3580 answers in 5 languages »phobias riddles » How many joints are in the human foot?33. The human foot consists of 26 bones and 33 joints.very hard 30% 262629%1111%151527%333330%Created by: Tschuka. Statistics based on 481 answers in 2 languages »people riddles » What was included in the original Pepsi-Cola recipe?Digestive enzyme. Pepsi Cola, first introduced in 1898, was named after pepsin (enzyme) and kola (nuts). In 1931, the company entered bankruptcy and changed hands. The new owners changed the recipe to resemble more Coca-Cola.very hard 33% coke from coalcoke from coal6%saltpetersaltpeter16%digestive enzymedigestive enzyme33%heroinheroin43%Created by: Kasia. Statistics based on 19694 answers in 4 languages »beverages riddles » What is the longest human muscle?Sartorius muscle. The sartorius muscle is the longest muscle in the human body. It is a long, thin, superficial muscle that runs down the length of the thigh in the anterior compartmentvery hard 35% Gluteus maximus muscleGluteus maximus muscle7%Quadratus femoris muscleQuadratus femoris muscle54%Sartorius muscleSartorius muscle35%Serratus anterior muscleSerratus anterior muscle2%Created by: AntyPatia. Statistics based on 2345 answers in 3 languages »medicine riddles » People have usually two kidneys. How are these located?The left kidney is located higher. Because of the asymmetry within the abdominal cavity caused by the liver, the right kidney is typically slightly smaller and located lower than the left. Moreover, the left kidney is located slightly more medial than the right.hard 41% symmetricallysymmetrically25%the left kidney is located higherthe left kidney is located higher41%the right kidney is located higherthe right kidney is located higher17%some people have the left one higher, others have the right one highersome people have the left one higher, others have the right one higher15%Created by: globalquiz.org. Statistics based on 19485 answers in 2 languages »anatomy riddles » How fast are the nerve impulses in the body of a healthy person?222 mph (350 km/h). Nerve impulses in the human body pass at a speed of 350 km / h.hard 45% 2.2 mph (3.5 km/h)2.2 mph (3.5 km/h)7%22 mph (35 km/h)22 mph (35 km/h)16%222 mph (350 km/h)222 mph (350 km/h)45%2222 mph (3500 km/h)2222 mph (3500 km/h)30%Created by: Tschuka. Statistics based on 1735 answers in 3 languages »medicine riddles » If you were to suffer from kyphosis, your back would be...Round. Kyphosis is the pathological curving of the spine, where parts of the spinal column lose some or all of their lordotic profile. This causes a bowing of the back, seen as a slouching posture. It can be called roundback or Kelso's hunchback.hard 44% roundround44%concaveconcave25%flatflat10%crookedcrooked20%Created by: Ninjai. Statistics based on 457 answers in 2 languages »diseases riddles » Which bird's skeleton is that?Ibises all have long, down-curved bills, and usually feed as a group, probing mud for food items, usually crustaceans. They are monogamous and highly territorial while nesting and feeding.hard 44% hummingbirdhummingbird25%ibisibis44%woodpeckerwoodpecker5%flamingoflamingo23%Created by: Ninjai. Statistics based on 2591 answers in 2 languages »biology riddles » Play human anatomy quiz and see all the questions.