Ileum
/ˈɪliəm/
The third and final part of the small intestine, following the jejunum.
Iliacus
/ɪˈlaɪəkəs/
A flat, triangular muscle which fills the iliac fossa.
Iliocostalis
/ˌɪlioʊkɒˈstælɪs/
The muscle that helps maintain the erect position of the spine.
Ilium
/ˈɪliəm/
The large broad bone forming the upper part of each half of the pelvis.
Immovable
/ɪˈmuːvəbəl/
Referring to synarthrosis joints, such as the sutures of the skull.
Immunoglobulin
/ˌɪmjʊnoʊˈɡlɒbjʊlɪn/
A protein that acts as an antibody.
Incisor
/ɪnˈsaɪzər/
A narrow-edged tooth at the front of the mouth, adapted for cutting.
Incus
/ˈɪŋkəs/
A small anvil-shaped bone in the middle ear, transmitting vibrations.
Index
/ˈɪndɛks/
The second digit of the hand; the forefinger.
Infarction
/ɪnˈfɑːrkʃən/
Obstruction of the blood supply to an organ or region of tissue, causing local death of the tissue.
Inferior
/ɪnˈfɪəriər/
Lower in station, rank, or position; situated below another part.
Infraglottic
/ˌɪnfrəˈɡlɒtɪk/
The portion of the larynx below the vocal cords.
Infraorbital
/ˌɪnfrəˈɔːrbɪtəl/
Situated below the orbit of the eye.
Infraspinatus
/ˌɪnfrəspaɪˈneɪtəs/
A thick triangular muscle which occupies the chief part of the infraspinatous fossa.
Infundibulum
/ˌɪnfʌnˈdɪbjʊləm/
A funnel-shaped cavity or structure, such as the stalk of the pituitary gland.
Inguinal
/ˈɪŋɡwɪnəl/
Relating to the groin.
Innominate
/ɪˈnɒmɪnət/
The hip bone, comprising the ilium, ischium, and pubis; also an artery (brachiocephalic).
Inorganic
/ˌɪnɔːrˈɡænɪk/
Relating to compounds that do not contain carbon-hydrogen bonds, like bone minerals.
Insertion
/ɪnˈsɜːrʃən/
The point or mode of attachment of a skeletal muscle to the bone or other body part that it moves.
Insula
/ˈɪnsjʊlə/
A region of the brain deep within the cerebral cortex.
Integument
/ɪnˈtɛɡjʊmənt/
A natural outer covering or coat, such as the skin.
Intercalated
/ɪnˈtɜːrkəleɪtɪd/
Inserted between; specifically, discs that connect cardiac muscle cells.
Intercostal
/ˌɪntərˈkɒstəl/
Situated between the ribs.
Internal
/ɪnˈtɜːrnəl/
Situated on the inside.
Interneuron
/ˌɪntərˈnjʊərɒn/
A neuron which transmits impulses between other neurons.
Interosseous
/ˌɪntərˈɒsiəs/
Connecting or lying between bones.
Interstitial
/ˌɪntərˈstɪʃəl/
Situated within the gaps or spaces between cells or tissues.
Interventricular
/ˌɪntərvɛnˈtrɪkjʊlər/
Situated between the ventricles of the heart.
Intervertebral
/ˌɪntərˈvɜːrtɪbrəl/
Situated between the vertebrae.
Intestine
/ɪnˈtɛstɪn/
The lower part of the alimentary canal from the stomach to the anus.
Intrinsic
/ɪnˈtrɪnzɪk/
Belonging naturally; muscles contained entirely within a specific organ or part.
Inversion
/ɪnˈvɜːrʒən/
The movement of the sole of the foot toward the median plane.
Involuntary
/ɪnˈvɒləntɛri/
Done without conscious control, such as the contraction of smooth muscle.
Iris
/ˈaɪrɪs/
The colored part of the eye that regulates the amount of light entering the pupil.
Ischium
/ˈɪskiəm/
The curved bone forming the base of each half of the pelvis.
Islets of Langerhans
/ˈaɪlɪts əv ˈlɑːŋərhænz/
Groups of pancreatic cells secreting insulin and glucagon.
Isthmus
/ˈɪsməs/
A narrow organ, passage, or piece of tissue connecting two larger parts.