Category: F

  • Fixation muscle

    A muscle that steadies a part so that more precise movements in a related structure may be accomplished.  

  • Fibularis longus muscle

    A muscle along the outside of the leg that bends the foot outward at the ankle. The fibularis longus originates from the head and upper lateral surface of the fibular, runs in a bony groove along the bottom of the foot to attach on the other side at the base of the first metatarsal and…

  • Functional murmur

    A murmur occurring in the absence of any pathological change in the structure of the heart valves or orifices. It does not indicate organic disease of the heart, and may disappear upon a return to health. It may be mistaken for a pathological murmur by an inexperienced listener.  

  • Fetal mortality

    The number of fetal deaths per 1000 live births, usually per year.  

  • Functional mobility

    The ability to move from one place to another to complete an activity or task.  

  • Follicle mite

    A mite that lives in hair follicles and sebaceous glands.  

  • First pass metabolism

    The metabolism of a substance that occurs immediately as it enters the body, and before it can exert any effect, or before it can be measured at its target organ.  

  • Fibrous membrane

    A membrane composed entirely of fibrous connective tissue. Examples include the fasciae, aponeuroses, perichondrium, periosteum, dura mater, and the capsules of some organs.  

  • Fenestrated membrane

    A layer of elastic connective tissue possessing minute round or oval openings. Found in the tunica intima and tunica media of medium-sized and large arteries.  

  • False membrane

    Fibrinous exudate on a mucous surface of a membrane, as in croup or diphtheria.