Isthmus Anatomy

Isthmus synonyms isthmus pronunciation isthmus translation english dictionary definition of isthmus. Isthmus of thyroid gland.

Aortic Isthmus Radiology Reference Article Radiopaedia Org

A narrow passage connecting two larger cavities.

Isthmus anatomy. It is covered by the fascia and the skin in the mid line of the neck. However its dimensions and location can vary. A constriction connecting two larger parts of an organ or other anatomic structure.

Cavo tricuspid isthmus of the right atrium of the heart a body of fibrous tissue in the lower atrium between the inferior vena cava and the tricuspid valve. The isthmus is a small region only about 2 cm 08 inch long that connects the ampulla and infundibulum to the uterus. On either side of the neck and near the middle line it is covered by the sternothyreoideus.

A narrow strip of tissue joining two larger. The isthmus lies over the 2 nd and 3 rd rings of the trachea the lateral lobes extend from the lateral aspects of the thyroid cartilage down as far the 6 th ring of the trachea. Isthmuses or isthmi 1.

On the surface of the uterus about midway between the apex and base is a slight constriction known as the isthmus and corresponding to this in the interior is a narrowing of the uterine cavity the internal orifice of the uterus. The final region of the fallopian tube known as the intramural or uterine part is located in the top portion fundus of the uterus. This is a list of anatomical isthmi.

It has two lateral lobes connected in the centre by the isthmus. Isthmus the mesencephalon midbrain rhombencephalon hindbrain boundary. The structure measures around 125 cm in depth and the same in breadth.

The aortic isthmus is the part of the aorta just distal to the origin of the left subclavian artery at the site of the ductus arteriosus. This portion of the aorta is partly constricted in the fetus because of the lack of flow within the aortic sac and ascending aorta. A narrow strip of land connecting two larger masses of land.

In anatomy isthmus refers to a constriction between organs. It is located deep to the overlying strap muscles sternohyoid sternothyroid and omohyoid. The narrowest portion of the brainstem at the junction between midbrain and hindbrain.

Uterus Definition Function Anatomy Britannica