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Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
12 terms share this root
Cavernous sinus

Large network of "bent and folded" veins that occupy "hollow spaces" on both sides of the pituitary gland

  • Cavus (Latin) - Hollow, Space
  • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
  • Contain CN III, IV, V1, V2, VI and internal carotid artery
  • CN VI is closest to internal carotid artery and runs through the middle rather than lateral wall like all the other nerves
  • Rupture of internal carotid artery can lead to arteriovenous fistulas
  • Coronary Sinus

    A site where multiple veins empty, resembling the tips of "crown".

    • Corona (Latin) - Crown
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
  • Primary collector of cardiac venous blood
  • Collection of veins joined together to form a large vessel that collects blood from the myocardium (heart muscle) and drains into the right atrium. located in the posterior portion of the coronary sulcus ( or groove) on the posterior surface of the heart. present in all mammals
  • Inferior sagittal sinus

    A vessel "beneath" the brain which allows blood to drain posteriorly, like an "arrow," from the center of the head. It forms a "gulf" (from the center of the brain) to the straight sinus (at the back of the head), which connects to the transverse sinuses.

    • Inferus (Latin) - Lower Down, Below
    • Sagitta (Latin) - Arrow
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
  • Drains blood from cerebral veins and receives CSF from arachnoid granulations
  • Maxillary sinus mucocele

    A condition in which there is an obstruction of a "fold" found in the upper "jaw" resulting in an expansion, forming a "belly" filled with "slime"

    • Maxilla (Latin) - Upper jaw
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
    • Mucus (Latin) - Slime, mold, snot
    • Koilia (Greek) - The belly
  • Distorts local atomy and exert pressure on adjacent structure as they enlarge
  • Relatively rare among all oral mucoceles
  • Maxillary sinus pseudocyst

    A condition in which there is an obstruction of a "fold" found in the upper "jaw" resulting in an expansion, forming a "fake" cystlike "sac"

    • Maxilla (Latin) - Upper jaw
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
    • Pseudein (Greek) - To deceive, cheat by lies, fake
    • Kustis (Greek) - Bladder, atomical pouch or sac
  • Domeshaped radiopaque shadow seen on the floor of the maxillary sinus
  • Focal accumulation of inflammatory exudate lists the epithelial lining of the sinus away from underlying bone
  • Rhinosinusitis

    "Inflammation" of the "bent space", or hollow bone called a sinus, around the "nose".

    • Rhino (Greek) - Nose
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
    Sinoatrial node

    A "knot" or bundle of nerves in the "hollow cavity" of the "upper heart" that is responsible for normal sinus rhythm.

    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
    • Atrium (Latin) - Central court or main room of an ancient Roman house, or either of the upper cavities of the heart
    • Nodus (Latin) - Knot
  • Highly innervated cardiac muscle in the right atrium responsible for normal sinus rhythm
  • The primary pacemaker of the heart
  • Supplied by a branch of the right coronary artery in the majority of the population
  • Sinus tract

    A arrow and "hollow" elongated channel "in the body" that allows the escape of fluid.

    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
    • Trahere (Latin) - To draw
    Sinus venosus

    Embryonic "hollow cavity" located on the "vein"containing side of the heart, feeding into right atrium

    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
    • Venosus (Latin) - Full of veins
  • In adults, incorporated into the wall of the right atrium while also forming the SA node and coronary sinus
  • Splenic sinusoid

    "Curved" vascular channels in the "spleen" which help remove old red blood cells

    • Splen (Greek) - The milt, spleen
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
  • Wide vascular channels in the red pulp of the spleen that drain into trabecular veins and filter out aged and damaged red blood cells, which are subsequently devoured by macrophages
  • Superior sagittal sinus

    The "Arrowlike" "fold/sinus" of the "top/superior" area of the skull.

    • Superior (Latin) - Higher, Above
    • Sagitta (Latin) - Arrow
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
  • Drains into the confluence of sinuses
  • Continues as the transverse sinus
  • Urogenital sinus

    A "bending" embryonic structure that gives rise to "genitals" and bladder, which stores "urine."

    • Ouron (Greek) - Urine
    • Genitalis (Latin) - Pertaining to generation or birth, Exterl sexual organs
    • Sinus (Latin) - Bend, fold, curve, a bent surface; a bay, bight, gulf; a fold in land; hollow curve or cavity in the body
  • In females, urogenital sinus gives rise to the lower portion of the vagi, Bartholin's glands, and Skene's glands. In males, the urogenital sinus gives rise to the prostate and Cowper's glands
  • MEDYMOLOGY