Search results
In anatomy, isthmus refers to a constriction between organs. This is a list of anatomical isthmi: Aortic isthmus, section of the aortic arch. 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. Isthmus, the ear side of the eustachian tube.
This list of isthmuses is an appendix to the article isthmus. The list is sorted by the region of the world in which the isthmus is located. An isthmus (/ ˈ ɪ s θ m ə s / or / ˈ ɪ s m ə s /; plural: isthmuses, or occasionally isthmi; from Ancient Greek: ἰσθμός, romanized: isthmos, lit.
General Biology I. Definition. An isthmus is a narrow strip of tissue connecting two larger parts of an organ or structure. In the endocrine system, it specifically refers to the part of the thyroid gland connecting its two lobes. congrats on reading the definition of isthmus. now let's actually learn it. ok, let's learn stuff.
Definition. In the context of the ovarian reproductive system, the isthmus is a narrow portion of the fallopian tube that connects the ampulla and the uterine cavity. It plays a critical role in guiding the egg from the ovary to the uterus.
3 lis 2023 · The respiratory system consists of a series of organs; the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles and lungs (alveoli). The nasal cavity and pharynx are together called the upper respiratory system, while the remainder of the organs comprise the lower respiratory system.
The thyroid gland is composed of two lobes that are usually connected by a narrow centrally-located tissue band called the isthmus. The isthmus is adherent to the upper anterior aspect of the trachea (Read more!) and is placed anterior to the second and third (or fourth) tracheal rings.
There are 12 major anatomy systems: Skeletal, Muscular, Cardiovascular, Digestive, Endocrine, Nervous, Respiratory, Immune/Lymphatic, Urinary, Female Reproductive, Male Reproductive, Integumentary. Select a system below to get started.
