Subvalvular apparatus

(noun)

The papillary muscles and the chordae tendineae, known as the subvalvular apparatus, hold the valves closed so that they do not prolapse.

Related Terms

Examples of Subvalvular apparatus in the following topics:

  • Operation of Atrioventricular Valves

    • The subvalvular apparatus describes the structures beneath the AV valves that prevent the valves prom prolapsing.
    • The subvalvular apparatus includes the chordae tendineae and the papillary muscles.
    • The subvalvular apparatus has no effect on the opening and closing of the valves, which is caused entirely by the pressure gradient of blood across the valve as blood flows from high pressure to low pressure areas.

  • The Golgi Apparatus

    • The Golgi apparatus sorts and packages materials before they leave the cell to ensure they arrive at the proper destination.
    • The receiving side of the Golgi apparatus is called the cis face.
    • The Golgi apparatus in this white blood cell is visible as a stack of semicircular, flattened rings in the lower portion of the image.
    • Several vesicles can be seen near the Golgi apparatus.
    • Describe the structure of the Golgi apparatus and its role in protein modification and secretion

  • Millikan's Oil Drop Experiment

    • The apparatus incorporated a pair of metal plates and a specific type of oil.
    • Millikan and Fletcher discovered it was best to use an oil with an extremely low vapor pressure, such as one designed for use in a vacuum apparatus.
    • This apparatus has a parallel pair of horizontal metal plates.

  • Induced EMF and Magnetic Flux

    • The apparatus used by Faraday to demonstrate that magnetic fields can create currents is illustrated in the following figure.
    • This is Faraday's apparatus for demonstrating that a magnetic field can produce a current.

  • Elements of Life

    • An outline of the apparatus used by Miller and Urey.
    • Using this apparatus, and using conditions thought to approximate the conditions on pre-biotic earth, they were able to catalyze the molecules of life like amino acids.

  • The Millikan Oil-Drop Experiment

    • This apparatus has a parallel pair of horizontal metal plates.
    • Special oil for vacuum apparatus is sprayed into the chamber, where drops become electrically charged.

  • Maxwell's Predictions and Hertz' Confirmation

    • The apparatus used by Hertz in 1887 to generate and detect electromagnetic waves.

  • The Mitotic Phase and the G0 Phase

    • The membranous organelles (such as the Golgi apparatus and endoplasmic reticulum) fragment and disperse toward the periphery of the cell.
    • During interphase, the Golgi apparatus accumulates enzymes, structural proteins, and glucose molecules prior to breaking into vesicles and dispersing throughout the dividing cell.
    • The pictures at the bottom were taken by fluorescence microscopy (hence, the black background) of cells artificially stained by fluorescent dyes: blue fluorescence indicates DNA (chromosomes) and green fluorescence indicates microtubules (spindle apparatus).

  • Edible Algae

    • They inherited their photosynthetic apparatus from cyanobacteria.

  • Interphase

    • The two centrosomes will give rise to the mitotic spindle, the apparatus that orchestrates the movement of chromosomes during mitosis.