What does avascular mean in anatomy?

: having few or no blood vessels avascular tissue.

What are examples of avascular?

Avascular tissue is a tissue that does not contain vessels. Some examples of avascular tissues are the cornea of the eye, the epithelial layer of the skin, and cartilages. Moreover, some connective tissues that contain elastic fibers are also avascular.

Which tissue type is avascular?

1. All epithelial tissue is avascular, acquiring nutrients through diffusion or absorption. 2. The four primary tissue types are epithelium, connective tissue, muscle and nervous tissue.

What does it mean to be vascularized?

Vascularization is the process of growing blood vessels into a tissue to improve oxygen and nutrient supply.

What does vascular tissue do in humans?

What is the vascular system? The vascular system, also called the circulatory system, is made up of the vessels that carry blood and lymph through the body. The arteries and veins carry blood throughout the body, delivering oxygen and nutrients to the body tissues and taking away tissue waste matter.

Whats the difference between vascular and avascular?

The term vascular is used in the study of human medicine, but the term avascular is generally usually used in place of non-vascular in this field. Vascular tissues in the human body have blood vessels like veins, arteries and capillaries, while avascular tissues do not.

What causes vascularization of the uterus?

Vascular compression may also result from changes in the myometrial activity. A hormonal disturbance may cause dysfunctional bleeding by changing vessel growth as well as the uterine smooth muscle activity of both vessels and myometrium.

What is corneal vascularization?

Disease. Corneal neovascularization (NV) is a pathologic condition of the cornea, characterized by the formation and extension of new vascular capillaries within and into the previously avascular corneal regions, extending from the limbus into the superficial or deep areas of the cornea.

What is a vascular problem?

Vascular disease occurs when an abnormal condition affects the blood vessels. This can often lead to severe disability and death. Vascular disease is any abnormal condition of the blood vessels (arteries and veins.) Vascular diseases outside the heart can “present” themselves anywhere.

What does it mean to have a vascular uterus?

That means they have a rich supply of blood vessels, most often coming from the uterine artery. A woman might have one or many fibroids, and those could be in many locations.

Do fibroids show blood flow on ultrasound?

Another very useful tool in the diagnosis of leiomyomas is colour Doppler ultrasonography. This technique shows circumferential vascularity, blood flow, and arterial supply of the fibroid. Nevertheless, necrotic leiomyomas or those that undergo torsion do not present any blood flow [11, 13].

Do fibroids have vascularity on ultrasound?

The previously described sonographic vascular features of fibroids include a peripheral rim of vascularity in the pseudocapsule (covering almost three-fourths of their circumference) [9] and marked peripheral flow with decreased central flow/avascular core [10].

Are uterine tumors vascular?

Gestational trophoblastic tumors are highly vascular and are associated with the formation of uterine vascular malformations.

What happens when fibroids lose blood supply?

When fibroids become too large, the blood vessels supplying the blood are no longer able to provide enough sustenance to meet the fibroid’s needs. Though this may seem good at first, it can have unpleasant effects. When this happens, the cells of the fibroid begin to die in a process called degeneration.

Are fibroids Hypervascular?

The tumor itself is relatively hypovascular, and its interior is supplied by small centripetal arteries that originate in a rich perifibroid arterial plexus (,16–,19). In the presence of multiple fibroid tumors, diffuse uterine hypervascularity is usually visible at angiography (,Fig 16).

What is a vascular endometrial mass?

Introduction. An endometrial polyp or uterine polyp is an abnormal growth containing glands, stroma and blood vessels projecting from the lining of the uterus (endometrium) that occupies spaces small or large enough to fill the uterine cavity. They are found during both reproductive and postmenopausal phases of life.

What does the endometrium secrete?

The glands of the endometrium secrete proteins, lipids, and glycogen. These are needed to nourish an embryo. They also prevent the endometrium from breaking down. If an embryo implants itself into the wall of the endometrium, the developing placenta will begin to secrete human chorionic gonadotropic hormone (hCG).