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Eidos (Greek) - Form, Resemblance or Shape, Likeness
34 terms share this root
Allantoic duct

A "sausage" "shaped" cell that "leads" waste products out of the embryo and help to exchange gas.

  • Alanto (Greek) - Sausage
  • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Ducere (Latin) - To Lead
  • Connects the bladder of the fetus to the umbilicus
  • An allantoic cyst can develop with improper degradation of the allantoic duct
  • The urachus is the allantoic duct remnant
  • Amyloidosis

    A condition in which there is a deposition of misfolded proteins of "fine meal" "forms" throughout the body.

    • Amylon (Greek) - Fine meal, Starch
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • A term referring to a set of conditions in which proteins fold to beta pleated sheets and aggregate leading to insolubility and deposition in various organ systems leading to problems.
  • Bullous pemphigoid

    Autoimmune disorder the causes "bubble" "like" blisters

    • Bulla (Latin) - Bubble
    • Pemphix (Greek) - Bubble
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Blisters are in the space between the epidermis and dermis
  • Linear pattern on immunofluorescence
  • Oral mucosa is not involved
  • Tense bullae that do not rupture easily
  • Negative Nikolsky sign... IgG antibodies attack hemidesmosome, which attach cells to the extracellular matrix, in the basement membrane
  • Chondromyxoid

    A benign "tumor" of "cartilage" that can form on long bones and has a glistening "mucus" like appearance.

    • Chondros (Greek) - Cartilage
    • Myxa (Greek) - Mucus
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Tumor, fibroma, metaphyses, progressive pain, cartilage
  • Rare benign cartilaginous tumor usually located in the metaphyses of long bones that can present with progressive pain and limited range of motion.
  • Tumor is composed of a mix of chondroid, myxoid, and fibrous tissue components. On gross examination they are typically seen as solid glistening tangray intraosseous masses.
  • Condyloid process

    Consisting of the condyle and the neck leading up to the condyle, the condyloid process is the mandibular bone's "progression" into the condyle

    • Kondulos (Greek) - Knuckle, knob
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Processus (Latin) - Process, progression, course
  • The condyloid process (aka. condylar process) is one of two bony eminences that project superiorly from the mandibular bone, towards the skull (the other being the coronoid process).
  • Coronoid fossa

    A "ditch" in the humerus bone that receives the "crown""like" eminence of the ul.

    • Korone (Greek) - Denoting somethign hooked
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Fossa (Latin) - Ditch, trench, cal
  • Receives the coronoid process of the ul during forearm flexion
  • Dermoid cyst

    A type of "atomical pouch" that forms on the skin's surface.

    • Derma (Greek) - Skin
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Kustis (Greek) - Bladder, atomical pouch or sac
  • A cystic teratoma that can be found anywhere teratomas can form (such as in the ovaries). Teratomas can have wide ranges of different tissues growing within them including hair, teeth, and nails.
  • Ethmoidal nerves

    The nerve that innervates the cells of the "sieve" like bone of the skull.

    • Ethmos (Greek) - A Sieve
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Nervus (Latin) - Sinew, tendon; cord, bowstring
  • Branch from CN V1 that supplies sensation to ethmoidal cells and sal septum.
  • Fibrinoid necrosis

    Tissue "death" with accumulation of proteinaceous material "resembling" "fibrin."

    • Fibra (Latin) - A fiber, filament, entrail
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Nekros (Greek) - Dead body, Corpse, Death
  • Associated with immune vasculitis, malignant hypertension, and preeclampsia
  • Seen in blood vessels
  • Glenoid fossa

    The structure that resembles the "form or shape" of a "ditch or canal' that forms the shoulder "joint".

    • Glene (Greek) - Joint socket
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Fossa (Latin) - Ditch, trench, cal
  • Either of the jaw or the scapula, both are joint insertion points, in the shoulder the glenoid fossa is the insertion point for the humerus, it is covered in a layer of cartilage, dislocation of the arm is the separation of humerus from the glenoid fossa
  • Glucocorticoid

    Class of steroids released by the "adrenal cortex" that decreases inflammation and regulates "sweet wine", or sugar levels.

    • Glykys (Greek) - Sweet, sweet wine
    • Cortex (Latin) - Bark of a Tree, Outer layer
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • The me comes directly from it's function as a steroid made from the adrenal glands that regulates sugar levels in the body
  • Lateral cricoarytenoid

    This muscle extend from the lateral cricoid cartilage to the muscular process of the arytenoid cartilage. The muscle is shaped like a "ring" and works in the area of the "windpipe."

    • Latus (Latin) - The side
    • Krikos (Greek) - Ring, circle
    • Arteria (Greek) - Windpipe, artery
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • These muscles adduct the vocal cords and thereby close the rima glottidis, protecting the airway.
  • Lateral pterygoid

    Muscle on the "side" of the face "resembling" a "wing."

    • Latus (Latin) - The side
    • Pteryx (Greek) - Wing
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Depresses mandible, protrude mandible, side to side movement of mandible
  • Lateral pterygoid nerve

    A "side" "cord" in the face "resembling" a "wing."

    • Latus (Latin) - The side
    • Pteryx (Greek) - Wing
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Nervus (Latin) - Sinew, tendon; cord, bowstring
  • Innervates pterygoideus externus
  • Leukemoid reaction

    A reaction involving "white" blood cells which "resembles" leukemia (although it is not actually leukemia)

    • Leukos (Greek) - White, clear
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • React (Medieval Latin) - Done again
  • Occurs during infection, stress, decay or sulfa drugs/steroids
  • Distinguished from acute leukemia by the presence of early mature neutrophil precursors
  • Lipoid nephrosis

    A "kidney" "disease" with the "likeness" of "fat."

    • Lipos (Greek) - Fat
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Nephros (Greek) - Kidney
    • Osis (Greek) - A condition, disease
  • Also known as minimal change disease
  • Most common in young children
  • Causes edema in feet and legs and proteinuria
  • May see fats in the blood in order to thicken it due to decreased oncotic pressure with protein loss
  • Treat with corticosteroids
  • This disease is med because of the elevated fat levels in the blood. The liver makes more fat to dump into circulation to increase the oncotic pressure lost via proteinuria.
  • Medial pterygoid

    "Wing" "shaped" muscle of mastication that elevates the "middle" of the jaw, and assists the lateral pterygoid in moving the jaw from side to side.

    • Medius (Latin) - In the middle
    • Pteryx (Greek) - Wing
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Innervated by the mandibular branch of the trigeminal nerve (CNV3)
  • Mineralocorticoid

    Hormone of "outer" "layer" of adrenal cortex (glomerulosa) responsible for "mineral" (salt) and water retention.

    • Minera (Latin) - Ore
    • Cortex (Latin) - Bark of a Tree, Outer layer
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Acts primarily on the kidneys.
  • Mucoepidermoid

    Most common malignant tumor of "slime" producing gland. "Abnormal" growth in the "skin's" "upper" layers.

    • Mucus (Latin) - Slime, mold, snot
    • Epi (English) - Above, Upon
    • Derma (Greek) - Skin
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Presents as a painful mass because of facial nerve involvement
  • Mycosis fungoides

    "Condition" of nonHodgkin lymphoma of mature CD4 cells, presents with "malformed" "mushroom" "fungi" shaped rashes, patches, and nodules. Called Sezary syndrome after spread to blood.

    • Mykes (Greek) - Fungus, mushroom, anything shaped like a mushroom
    • Osis (Greek) - A condition, disease
    • Fungus (Latin) - Mushroom
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Lymphocytes with cerebriform nuclei
  • Pautrier's microabscess in the epidermis
  • Additional cause of leonine facies
  • Myeloid

    Cell line "formed" from "marrow" which RBC, platelets, neutrophils, monocytes, eosinophils, and basophils arise.

    • Myelos (Greek) - Marrow, the brain
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    Mylohyoid

    "Ushaped" "muscle" which connects the mandible to the hyoid "forming" the jaw used in swallowing and speaking.

    • Myle (Greek) - Grinder, A mill
    • Hyoides (Greek) - Shaped like the letter u
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • First pharyngeal arch derivative
  • Myxoid

    The "forming" of a mass of extracellular "mucus" matrix, such as a myxoid liposarcoma or cardiac myxoma.

    • Muxa (Greek) - Mucus
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    Nocardia asteroides

    A bacteria med for both the French veterinarian who described it, and for the "star" like colonies it forms on agar.

    • Astro (Greek) - Star
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Gram positive
  • Catalase positive
  • Acidfast branching filaments
  • Obligate aerobe
  • May cause pulmonary infections in immunocompromised individuals
  • Treated with sulfonamides

  • Mnemonics
    PUNCH
    Urease Positive Organisms
    Proteus, Ureaplasma, Nocardia, Cryptococccus, H. Pylori
    Posterior cricoarytenoid

    Very small, paired muscles that extend from the posterior cricoid cartilage to the arytenoid cartilages "behind" the larynx. They complete a "ring" of muscles surrounding the larynx. They function to open the vocal cords and are innervated by the recurrent laryngeal branch of the Vagus nerve

    • Post (Latin) - Behind, afterward
    • Krikos (Greek) - Ring, circle
    • Arytaina (Greek) - Ladle
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Paralysis leads to asphyxiation
  • Pterygoids

    Winglike muscles of the jaw.

    • Pteryx (Greek) - Wing
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • Muscles on the side of the face that mainly serve to open the jaw
  • Rheumatoid arthiritis

    An autoimmune condition that affects the "joints", reducing their ability to move or "flow" past one another.

    • Rheum (Greek) - Discharge from the body, flux; a stream, current, flood, a flowing
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Arthron (Greek) - Pertaining to the Joint
  • Type III and IV hypersensitivity
  • Bouchard nodules
  • More common in females
  • Morning stiffness that gets better throughout the day
  • HLADR4
  • Rhomboid major

    "Rhombus""like" "great" upper back muscle that connects the medial border of the scapula to the vertebrae.

    • Rhombos (Greek) - A magician's circle
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Magnus (Latin) - Great in size, Greater
  • Innervated by the dorsal scapular nerve
  • Fixes scapula to the thoracic wall
  • Involved in retraction of the scapula.
  • Rhomboid minor

    "Rhombus""like" "small" upper back muscle that connects the medial border of the scapula to the vertebrae. Located superior to the rhomboid major.

    • Rhombos (Greek) - A magician's circle
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Meion (Greek) - To lessen, lesser
  • Innervated by the dorsal scapular nerve
  • Fixes scapula to the thoracic wall
  • Involved in retraction of the scapula
  • Smaller than the rhomboid major
  • Sarcoidosis

    A "state of disease" affecting the "fleshlike" organs in the body, such as the lungs

    • Sarx (Latin) - Flesh, Meat
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Osis (Greek) - A condition, disease
  • A disease characterized by autoimmune inflammatory granules seen in a multitude of organs, most notably in hilum of the lungs
  • Causes hypercalcemia
  • Seen classically in African American women
  • Mimics the symptoms a TB infection

  • Mnemonics
    S. A. R. C. O. I. D
    Symptoms of Sarcoidosis
    Skin (Erythema Nodosum). Arthritis. Respiratory (Hilar Lymphadenopathy). Cardiac (Heart Block, Failure). Optic (Uveitis). Intracranial (Meningitis and neuropathy). Derangement of Liver and Kidneys
    Schizoid

    Personality disorder "resembling" "schizophrenia" in which the patient is aloof from others and prefers social isolation.

    • Skhizein (Greek) - To Split
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    Sternocleidomastoid

    Muscle of the "breast, clavicle, and breastlike process (behind the ear)" that is response for turning the head contralaterally.

    • Sternon (Latin) - Breast
    • Cleido (Latin) - Clavicle
    • Mastos (Greek) - Breast
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
  • A muscle that turns the head to the contralateral side.
  • Innervated by the spinal accessory nerve (CN 11)
  • Often hypertrophied in congenital torticollis.
  • Strongyloides Stercoralis

    A "round" "shaped" intestinal parasitic nematode, which has rhabditiform larvae (NOT eggs) in the "stool"

  • Nematode responsible for intestinal infections known as strongyloidiasis, which manifests as diarrhea and stomach pain.
  • Larvae infects the body through cutaneous surfaces, often due to barefoot walking in soil
  • Treated with ivermectin
  • Trapezoid bone

    The "four" sided "formed" "bone" of the wrist.

    • Trapezion (Latin) - A table or counter
    • Eidos (Greek) - Form, Resemblance or Shape, Likeness
    • Ban (Old English) - Bone, tusk
  • Wedgeshaped bone of the distal row of wrist bones, adjacent to the 2nd metacarpal
  • Med for its structure as having 4 sides

  • Mnemonics
    So Long To Pinky, Here Comes The Thumb
    The bones of the wrist
    Scaphoid, Lunate, Triqutrim, Pisiform, Hamate, Capitate, Trapezoid, Trapezium
    MEDYMOLOGY