Human Anatomy

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Once a person is past puberty, there is no way to make his or her legs longer. For most women, puberty ends between the ages of 16 and 20. Men sometimes continue growing into their early 20s.

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  • How do you get pregnant with quintuplets?

    Q: How do you get pregnant with quintuplets?

    A: According to the American Pregnancy Association, there are two ways that a woman can become pregnant with more than one child at a time, either multiple eggs are fertilized at the same time, or one fertilized egg divides into multiple embryos. The chances of becoming pregnant with more than baby is low however. In particular quintuplets are very rare, accounting for less than 41 births in 2011 out of almost four million total births, as noted by Multiples of America.
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  • Why is the sense of touch important?

    Q: Why is the sense of touch important?

    A: The sense of touch is important because it allows animals to derive information about their surroundings when the other senses are not appropriate. Some animals rely on the sense of touch more than others do. Typically, animals with a very poor sense of sight develop an exquisite sense of touch.
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  • What is the capacity of a human stomach?

    Q: What is the capacity of a human stomach?

    A: According to the National Center for Biotechnology Information (NCBI), the human stomach is an elastic organ that can expand to hold from 0.25 to 1.7 L of contents without causing any discomfort. The average human stomach has a capacity of roughly 1 L, or a little more than a quart.
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  • What is the purpose of fat in the body?

    Q: What is the purpose of fat in the body?

    A: Fat supplies calories, provides essential fatty acids and serves as the storage substance for the excess calories of the body, according to the health guide of The New York Times. It helps move certain vitamins through the bloodstream, and it maintains healthy hair and skin.
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  • Does your head grow as you get older?

    Q: Does your head grow as you get older?

    A: Duke Magazine notes that the bones in the skull continue to grow as people age. The forehead tends to move forward while the cheekbones move slightly backwards, causing subtle changes to the human face. Because the facial bones tilt forward as people age, it causes sagging of the soft tissues.
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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 is the function of the hammer in the ear?

    Q: What is the function of the hammer in the ear?

    A: The hammer in the ear, also called the malleus, transmits sound vibration to the anvil from the eardrum. The hammer and the anvil, also called the incus, are two of three very small, linked and movable bones in the ear. The other is the stirrup or stapes. Together, these three bones transmit sounds through the inner ear. InnerBody states that "the small bones create fluid membrane waves by converting compression sound waves from the eardrum."
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  • Does listening to music affect your reaction time?

    Q: Does listening to music affect your reaction time?

    A: Listening to loud music has a small effect on reaction time. Music at low and moderate levels does not affect reaction time in a significant way.
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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 does the skeletal system consist of?

    Q: What does the skeletal system consist of?

    A: The skeletal system consists of 206 bones and their associated tissues, including the cartilage, ligaments, tendons and joints. Its functions are supporting the body and protecting the vital organs. It also serves as anchorage for the action of muscles.
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  • What age do feet stop growing?

    Q: What age do feet stop growing?

    A: The growth plates in feet stop growing sometime during the late teen years, but shoe size often continues to change over the course of a person's lifetime.
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  • What is the hardest tissue in the body?

    Q: What is the hardest tissue in the body?

    A: According to WebMD, the hardest tissue in the human body is tooth enamel. Tooth enamel is the thin, hard, white covering that protects the dentin of the teeth.
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  • What is the average heart rate for my age?

    Q: What is the average heart rate for my age?

    A: Normal heart rate varies based upon age and activity level. A resting heart rate is typically above 60 beats per minute. It changes as an individual ages. The Mayo Clinic explains that a well-trained athlete often has a lower resting heart rate, closer to 40 beats per minute.
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  • What does it mean when your nose itches?

    Q: What does it mean when your nose itches?

    A: An itchy nose may indicate allergies, most notably to animals, including cats, dogs, birds, seasonal allergies like hay fever, food, or the start of the common cold. It may also be the result of dry skin.
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  • What is the cleanest part of the human body?

    Q: What is the cleanest part of the human body?

    A: The cleanest part of the human body is often considered to be the eye because of its abilities to clean itself. The eyelid opens and shuts several times every minute in order to keep the eye clean and moist.
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  • What happens when too much adrenaline is produced?

    Q: What happens when too much adrenaline is produced?

    A: When the body produces too much adrenaline, a person likely has phaeochromocytoma, a rare tumor of the adrenal medulla, according to the Society for Endocrinology. Symptoms of this condition include high blood pressure, fast heartbeat, palpitations, excessive sweating, weight loss and anxiety.
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  • Why does asparagus make your pee smell?

    Q: Why does asparagus make your pee smell?

    A: Asparagus pee (for lack of a better term) is a centuries-old problem, and scientists still aren't sure what causes its unique odor. Adding to the uncertainty is a strange phenomenon: a portion of the population either doesn't produce the smell or can't smell it at all.
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  • What are the roles of joints, bones and muscles?

    Q: What are the roles of joints, bones and muscles?

    A: Bones, muscles and joints play an important role in the human body. They, along with tendons, ligaments and cartilage, form the musculoskeletal system and enable us to perform physical activity. The musculoskeletal system protects and supports internal organs, allows movement, gives the body its shape, produces blood cells, stores calcium and phosphorus, and produces heat.
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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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  • How much food does the average person eat in a day?

    Q: How much food does the average person eat in a day?

    A: An average person eats about 2000 calories a day, according to a study conducted by the University of Westminster's Human Performance Laboratory. The six women studied consumed between 1770 to 2600 calories a day, as published in the Mirror.
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  • Do eyes grow after birth?

    Q: Do eyes grow after birth?

    A: According to the Chicago College of Medicine, eyes do continue to grow after birth. A newborn's eyes are about 75 percent the size they are going to be when fully grown.
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