How many permanent bones are there in the body of an adult?

    Which one of these is not one of the three main types of muscle?

    How much body weight on a female is made up of muscle?

    How many litres of blood does the average body contain?

    Food and oxygen are released into the body via the __________?

    What is the primary function of the respiratory system?

    How many systems are used in our bodies?

    Which system is the most complex in the body?

    What is the name of the main muscle on your thighs?

    Roughly how many muscles are in the body?

    The skeletal system provides a series of independently movable levers.

    Muscles can only push.

    The heart is about the size of a clenched fist.

    We inhale carbon dioxide and exhale oxygen.

    Nerves transmit information as electrical impulses from one area of the body to another.

    What is the spinal cord connected to?

    The tongue is a powerful muscle which detects "good" and "bad" flavours in food and manipulates food between the teeth for chewing.

    The largest body of lymphoid tissue in the body is the spleen.

    The muscular system is attached to the skeletal system by tendons and other tissues.