Human Anatomy

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Unequal pupil size, also known as anisocoria, naturally occurs in 20 percent of the population. However, it can also be a sign of a serious medical problem, according to About.com. This is why looking closely at the diameter of your pupils is a part of most medical and trauma assessments.

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  • How many taste buds are on the human tongue?

    Q: How many taste buds are on the human tongue?

    A: According to KidsHealth, the average human tongue has about 10,000 taste buds. In many people, there is a regular turnover every two weeks and all the taste buds are replaced.
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  • How many pulse points are in the human body?

    Q: How many pulse points are in the human body?

    A: There are eight main pulse points in the human body. These pulse points are in the wrists, at the sides of the lower jaw, at the temples, on the side of the neck, on the inner biceps, behind the knee, in the groin and on the upper part of the foot. All arteries have a pulse, which can be felt where they run close to the skin.
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  • What is the average height for an adult?

    Q: What is the average height for an adult?

    A: The Centers for Disease Control and Prevention identifies the average height for American women as about 5 feet, 4 inches tall. The average man is just over 5 feet, 9 inches tall.
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  • What does the left side of your brain do?

    Q: What does the left side of your brain do?

    A: The left side of your brain controls the muscles on the right side of your body, and it is responsible for language along with logical and mathematical thinking. Meanwhile, the right brain controls the muscles on the left side of your body, and it is associated with spatial reasoning and musical abilities.
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  • How long can the human intestine stretch?

    Q: How long can the human intestine stretch?

    A: The combined length of the small and large intestines averages 25 feet long. Individually, the uncoiled small intestine has an average length of 20 feet, while the large intestine has an average length of 5 feet. The length of the intestines allows for enough time for nutrients to be absorbed before waste is expelled from the body.
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  • What is the function of the uvula?

    Q: What is the function of the uvula?

    A: Although there is some uncertainly regarding the function of the uvula, experts believe that this small flap-like structure in the back of the throat plays important roles in speech and swallowing. The uvula contains glands that secrete a large amount of saliva, which aids in digestion, keeps the mouth moist and prevents airborne pathogens from entering the respiratory canal.
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  • Why are females more flexible than males?

    Q: Why are females more flexible than males?

    A: Women’s bodies are more flexible than men's to allow women to carry and eventually hold a baby, according to Harvard University. This is caused in part by the hormone estrogen, which promotes the lengthening of muscles, according to Krav Maga for Fitness.
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  • What are two factors that contribute to knee stability?

    Q: What are two factors that contribute to knee stability?

    A: According to the Western Journal of Medicine, the knee is stabilized by the shape of the joint and the ligaments accompanying it. The joint is shaped by the local bone protuberances and the surrounding cartilage. The many ligaments that support the knee joint include the cruciate (cross-shaped) and collateral ligaments.
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  • How many years of your life do you spend sleeping?

    Q: How many years of your life do you spend sleeping?

    A: The Mirror reports that humans, on average, spend a total of 227,468 hours, or 26 years, of their lives sleeping. According to the National Center on Sleep Disorders Research, this amount translates into one-third, or 33 percent, of a person's total lifetime spent sleeping.
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  • What is the function of the alveoli?

    Q: What is the function of the alveoli?

    A: The function of the alveoli is to assist in oxygen exchange through the membranes of the small balloon-like structures. The alveoli are found on the branches of the bronchial passages.
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  • What causes lack of oxygen?

    Q: What causes lack of oxygen?

    A: Lack of oxygen, or hypoxia, can be caused by a wide range of medical and environmental factors. Externally, lack of oxygen is usually the result of exposure to low-oxygen environments, such as those at high altitudes. This is why the FAA recommends that pilots use supplemental oxygen for altitudes over 10,000 feet in the day and 6,000 feet at night, according to About.com.
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  • What causes flushed cheeks?

    Q: What causes flushed cheeks?

    A: According to the National Health Service of the U.K., flushed cheeks, or "blushing," is a result of the involuntary nervous system responding to stress or embarrassment. Your face muscles relax, which allows your face's blood vessels to expand and take in more blood, causing the reddish hue of blushing.
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  • What is the relationship between intelligence and creativity?

    Q: What is the relationship between intelligence and creativity?

    A: The relationship between intelligence and creativity is not fully understood, although recent research suggests that intelligent people naturally crave higher levels of creativity. Research also suggests that intelligence and creativity overlap, meaning that intelligent individuals have a high capacity for creativity, and vice versa. This is somewhat counter to previous ideas that suggested creativity raises intelligence levels.
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  • What are the names of the five fingers of the hand?

    Q: What are the names of the five fingers of the hand?

    A: The five fingers of a typical human hand are the thumb, index finger, middle finger, ring finger and baby finger. The baby finger is often referred to as the pinky.
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  • What are the advantages of jointed appendages?

    Q: What are the advantages of jointed appendages?

    A: Jointed appendages are an advantage because they allow for any activity that requires movement, including walking, swimming, feeding, and defense. Jointed appendages act the same as a system of levers or like the joints on the human body.
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  • What is the approximate range of human hearing?

    Q: What is the approximate range of human hearing?

    A: The approximate range for human hearing is between 20 to 20,000 Hertz (Hz). This number is greatly dependent on the distance of the noise from the person and the type of noise that is being exhibited.
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  • What are all the finger and toe bones called?

    Q: What are all the finger and toe bones called?

    A: The finger and toe bones are called phalanges. Each finger and toe, with the exception of the thumb and great toe, has proximal, middle and distal phalanges.
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  • Why is one pupil bigger than the other?

    Q: Why is one pupil bigger than the other?

    A: Unequal pupil size, also known as anisocoria, naturally occurs in 20 percent of the population. However, it can also be a sign of a serious medical problem, according to About.com. This is why looking closely at the diameter of your pupils is a part of most medical and trauma assessments.
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  • Where is the torso located on the body?

    Q: Where is the torso located on the body?

    A: In the bodies of humans, as well as many animals, the torso or trunk, is the area of the body that contains the chest and abdomen, and includes the area of the body between the neckline and pelvis, excluding limbs. The torso includes internal and external features of the human body, such as important organs like the kidney, heart, lungs and liver, the skin and several types of muscles. These skeletal components work together to carry out many critical life functions, such as respiration, digestion and reproduction.
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  • How do you get a defined cheekbone?

    Q: How do you get a defined cheekbone?

    A: The easiest way to achieve the appearance of defined cheekbones is through the use of special light-and-shadow tricks with makeup. Defined cheekbones are also sought after through a variety of methods, such as facial exercises, contouring tricks and surgical augmentation. Non-invasive procedures, such as Botox and Juvederm injections, are also used to slightly alter the shape of the face and create the appearance of better-defined cheekbones.
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  • What part of the brain does music affect?

    Q: What part of the brain does music affect?

    A: Initially, a person's temporal and frontal lobes begin processing the sounds of music when a song begins to play, with brain cells deciphering melody, rhythm and pitch. Many researchers believe most activity concerning music happens in the brain's right hemisphere, while other researchers say it happens on both sides.
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