Human Anatomy

A:

The human spinal cord is protected by the spinal column, which is made up of bones called vertebrae. Each vertebra consists of the spinous process, transverse process and body. The spinal cord passes through the vertebral foramen, the middle opening in the vertebrae.

See Full Answer
Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What is the difference between veins, arteries and capillaries?

    Q: What is the difference between veins, arteries and capillaries?

    A: According to The Franklin Institute, there are three types of blood vessels, each with its own function. Veins carry blood back to the heart, arteries carry blood away from the heart and capillaries connect arteries to veins.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • How does your leg work?

    Q: How does your leg work?

    A: The functioning of the human leg is the result of cooperation between the muscles and bones located there. Many muscles involved in leg function are quite large and use powerful contractions to propel and support the body. In addition muscles combined with the leg's bone structure are responsible for adjusting to minute changes, thus ensuring the body remains balanced in standing, walking or running modes.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What is the function of Meissner's corpuscles?

    Q: What is the function of Meissner's corpuscles?

    A: Meissner's corpuscles, also known as tactile corpuscles, are nerve endings that are responsible for detecting a light touch to the skin. The are considered a type of mechanoreceptor since they are responsive to physical pressure. Meissner's corpuscles have the lowest sensitivity threshold of any type of mechanoreceptor; they can sense vibrations with frequencies as low as 10 Hertz.
    See Full Answer
    Filed Under:
  • Why do people have dimples?

    Q: Why do people have dimples?

    A: Dimples are the result of a deformity that makes facial muscles shorter than normal. The shorter muscles pull the skin when the person smiles, causing indentations in the skin known as dimples. As a person ages, dimples sometimes disappear as muscles naturally lengthen.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • Why are fingertips very sensitive to touch?

    Q: Why are fingertips very sensitive to touch?

    A: Fingertips are very sensitive to touch because they contain a high number of nerve endings. According to the Biology Encyclopedia, areas with more nerve endings are more sensitive to touch.
    See Full Answer
    Filed Under:
  • What parts of the human body never stop growing?

    Q: What parts of the human body never stop growing?

    A: Italian scientists have confirmed that the parts of the body that consist of cartilage continue to grow until the day of death. This includes one's nose and ears. Earlobes contain cartilage but also elongate due to gravitational force.
    See Full Answer
    Filed Under:
  • How can I reduce upper arm size?

    Q: How can I reduce upper arm size?

    A: To reduce the size of upper arms, train the upper arms with both isolation and compound exercises using either body weight exercises or traditional training exercises. Eliminate upper arm flab by hitting the punching bag as it helps burn fat and tone muscles in that area. To get the best results, it is important to tighten daily diets and achieve overall weight loss.
    See Full Answer
    Filed Under:
  • What is the dirtiest place in the human body?

    Q: What is the dirtiest place in the human body?

    A: The mouth is considered the dirtiest place in the human body. It carries the largest amount of bacteria and germs.
    See Full Answer
    Filed Under:
  • How many body parts do humans have?

    Q: How many body parts do humans have?

    A: Humans have many body parts including 206 bones and more than 600 muscles. Scientists discovered a new body part, a ligament in the knee now called anterolateral ligament in 2013 at the University of Leuven in Belgium.
    See Full Answer
    Filed Under:
  • What causes severe hunger pains?

    Q: What causes severe hunger pains?

    A: Better Medicine states that hunger is the result of a complicated group of interactions controlled by the body's endocrine, digestive and neurological systems. These systems send chemicals to the brain to indicate both hunger and fullness. When a person consistently experiences excessive hunger, it can be a sign of illness.
    See Full Answer
    Filed Under:
  • What is a nasal passage?

    Q: What is a nasal passage?

    A: The nasal passage is a channel wherein air flows through the nose. Respiratory mucous membranes with many hair-like cells line the walls of this passage.
    See Full Answer
    Filed Under:
  • How long does it take to digest liquids?

    Q: How long does it take to digest liquids?

    A: On average, food takes six to eight hours to pass through the stomach and small intestines. Liquids are not digested separately from foods, and they follow the same digestion process. In liquid-only diets, the digestion process may take fewer hours, as the stomach doesn't have to mechanically break down food.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • Are attached earlobes dominant or recessive?

    Q: Are attached earlobes dominant or recessive?

    A: Attached earlobes are considered to be recessive. Free earlobes are a dominant trait. This means that far more people have earlobes that are unattached.
    See Full Answer
    Filed Under:
  • What is a high instep?

    Q: What is a high instep?

    A: A high instep is a type of foot structure in which the arch of the foot does not fall flat when bearing weight. This condition, also known as a supinated foot and Pes Cavus, occurs in about 8 to 15 per cent of the population, according to MedicMD.
    See Full Answer
    Filed Under:
  • What are the similarities between cat and human anatomy?

    Q: What are the similarities between cat and human anatomy?

    A: According to Melodie Anne Coffman for The Nest, cats and humans share many anatomical similarities within the lungs, heart, digestive system, urinary tract and sex organs. Cats also share very basic elements of anatomy with humans, including eyes, mouths, ears, noses, bones, tongues, teeth and skin.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under: