aortic isthmus definition
Coarctation of the aorta is a narrowing of the aorta, the main blood vessel carrying oxygen-rich blood from the left ventricle of the heart to all of the organs of the body. that part of the aorta between the origin of the brachiocephalic trunk, or the left subclavian artery, and that of the ductus arteriosus which is partly constricted in the fetus; it marks the partial separation of fetal blood flow derived from right and left ventricles, and is most conspicuous in the newborn calf. that part of the aorta between the origin of the brachiocephalic trunk, or the left subclavian artery, and that of the ductus arteriosus which is partly constricted in the fetus; it marks the partial separation of fetal blood flow derived from right and left ventricles, and is most conspicuous in the newborn calf. isthmus of fauces the constricted aperture between the cavity of the mouth and the pharynx. isthmus of rhombencephalon the narrow segment of the fetal brain, forming the plane of separation between the rhombencephalon and cerebrum. isthmus of thyroid the band of tissue joining the lobes of the thyroid. isthmus of fauces (isthmus fau´cium) the constricted aperture between the cavity of the mouth and the pharynx. isthmus of rhombencephalon the narrow segment of the fetal brain, forming the plane of separation between the rhombencephalon and cerebrum. a slight constriction of the aorta immediately distal to the left subclavian artery at the point of attachment of the ductus arteriosus. aortic isthmus. A constriction in the fetal aorta between the ductus arteriosus and the left subclavian artery. The condition sometimes persists into adulthood. [TA] a slight constriction of the aorta immediately distal to the left subclavian artery at the point of attachment of the ductus arteriosus. Synonym(s): isthmus aortae [TA], isthmus of aorta. A constriction in the fetal aorta between the ductus arteriosus and the left subclavian artery. Depending on the size and growth rate of your thoracic aortic aneurysm, treatment may vary from watchful waiting to emergency surgery. Ideally, surgery for a thoracic aortic aneurysm can be planned if necessary. a narrow connection between two larger bodies or parts. adj., adj isth´mian. isthmus of auditory tube (isthmus of eustachian tube) the narrowest part of the eustachian tube at the junction of its bony and cartilaginous parts. A thoracic aortic aneurysm is a weakened area in the upper part of the aorta. The aorta is the major blood vessel that feeds blood to the body. A thoracic aortic aneurysm may also be called thoracic aneurysm and aortic dissection (TAAD) because an aneurysm can lead to a tear in the artery wall (dissection) that can cause life-threatening bleeding.
A slight constriction of the aorta immediately distal to the left subclavian artery at the point of attachment of the ductus arteriosus.