linea terminalis

(noun)

Part of the pelvic brim, which is the edge of the pelvic inlet.

Related Terms

Examples of linea terminalis in the following topics:

  • Pubis

    • (1) sacrum, (2) ilium, (3) ischium, (4) pubis: 4a-body; 4b-superior ramus; 4c-inferior ramus, (5) pubic symphisis, (6) acetabulum, (7) obturator foramen, (8) coccyx, (red dotted line) linea terminalis.

  • Lumbar Plexus

    • Obturator nerve: Leaves the lumbar plexus and descends behind the psoas major on its medial side, follows the linea terminalis into the lesser pelvis, then finally leaves the pelvic area through the obturator canal.

  • Uterus

    • The fundus does not surpass the linea terminalis.

  • Anterior Muscles

    • Towards the midline the muscles form aponeuroses which merge into the linea alba.
    • Attachments – Originates from the lower ribs and attaches to the pelvis and forms an aponeurosis in towards the midline and linea alba.
    • Attaches to the lower ribs and forms an aponeurosis in towards the midline and linea alba.
    • Attachments - Originates from the lower ribs, thoracolumbar fascia and pelvis and forms an aponeurosis in towards the midline and linea alba.
    • Attachments – Originates from the pubis and attaches to the linea alba.

  • Circumventricular Organs

    • Vascular organ of lamina terminalis: Responsible for the homeostatic conservation of osmolarity.

  • Anatomical Changes

    • These signs include the presence of human chorionic gonadotropin (hCG) in the blood and urine, missed menstrual period, implantation bleeding (occurs at implantation of the embryo in the uterus during the third or fourth week after last menstrual period), increased basal body temperature sustained for over 2 weeks after ovulation, Chadwick's sign (darkening of the cervix, vagina, and vulva), Goodell's sign (softening of the vaginal portion of the cervix), Hegar's sign (softening of the uterus isthmus), and pigmentation of the linea alba (called linea nigra), which is darkening of the skin in a midline of the abdomen.

  • Trigonometric Functions

    • The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side: so called because it can be represented as a line segment tangent to the circle, that is the line that touches the circle, from Latin linea tangens or touching line (cf. tangere, to touch).

  • Regulation of Water Output

    • If the body is becoming fluid-deficient, this will be sensed by osmoreceptors in the organum vasculosum of lamina terminalis and subfornical organ.

  • Limbic System

    • These lie below the rostrum of the corpus callosum and anterior to the lamina terminalis.

  • Production of Dilute and Concentrated Urine

    • To explain more scientifically, as the body becomes fluid-deficient, this is sensed by osmoreceptors in the organum vasculosum of lamina terminalis and subfornical organ.