intervenous tubercle

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Related to intervenous tubercle: intravenous, conus arteriosus, Fossa ovalis

in·ter·ve·nous tu·ber·cle

(in'tĕr-vē'nŭs tū'bĕr-kĕl)
The slight projection on the wall of the right atrium between the orifices of the venae cavae.


Richard, English anatomist and physiologist, 1631-1691.
Lower ring - one of four fibrous rings that form part of the fibrous skeleton of the heart. Synonym(s): fibrous ring of heart
Lower tubercle - the slight projection on the wall of the right atrium between the orifices of the venae cavae. Synonym(s): intervenous tubercle


1. a small, rounded nodule produced by the bacillus of tuberculosis (Mycobacterium bovis). It is made up of small spherical masses that contain giant cells and are surrounded by spindle-shaped epithelioid cells.
2. a nodule or small eminence, especially one on a bone, for attachment of a tendon. See also cuneate tubercle.

dysgonic tubercle (1)
one from which it is difficult to culture mycobacteria, typical of Mycobacterium bovis.
eugonic tubercle (1)
one from which mycobacteria can be isolated with ease. Typical of Mycobacterium avium.
fibrous tubercle (1)
a tubercle of bacillary origin that contains connective tissue elements.
genital tubercle
see phallic tubercle (below).
gracile tubercle
a small swelling; used as an anatomical landmark; also an attachment for the gracilis nucleus in the medulla oblongata.
humerus tubercle
the point of the shoulder; the greater tubercle on the head of the humerus.
intercondylar t's
situated on the intercondylar eminence on the head of the tibia, there are medial and lateral tubercles. Called also intercondylar eminences.
intermediate humerus tubercle
a small ridge between the greater and lesser tubercles of the horse's humerus; it serves to restrain the bicipital tendon.
intervenous tubercle
a fold on the inner wall of the right atrium, directing the flow of blood from the venae cavae to the atrioventricular opening.
miliary tubercle
one of the many minute tubercles formed in many organs in acute miliary tuberculosis.
phallic tubercle
primordia of the penis; called also genital tubercle.
pubic tubercle
a prominent tubercle at the lateral end of the pubic crest.
supraglenoid tubercle
a tubercle on the scapula for attachment of the biceps muscle.