vessel

(redirected from Great vessels)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Wikipedia.

vessel

1. a passenger or freight-carrying ship, boat, etc.
2. an aircraft, esp an airship
3. Anatomy a tubular structure that transports such body fluids as blood and lymph
4. Botany a tubular element of xylem tissue consisting of a row of cells in which the connecting cell walls have broken down

Vessel

 

(also trachea), in plants, a conducting element of xylem that consists of a long hollow tube formed by a single row of cells (vessel members) perforated on their transverse walls. Vessels are characteristic of angiosperms (except for certain Polycarpicae [Trochodendron, drimys] and Liliaceae [lily of the valley, dracena, agave]); they also occur in some ferns (Pleridium), selaginella, Equisetum, and Gneticae (ephedra, Gnetum, Welwitschia).

Vessels may be annular, helical, scalariform, or pitted, depending on the structures of their lateral walls. In annular and helical vessels the secondary membrane resembles rings or twisted ribbons. The vessels arise in the early stages of the development of plant organs and are capable of extension. Scalariform and pitted vessels with larger deposits of secondary membrane and bordered pits in the walls are formed in organs that have finished growing lengthwise. After the lignification of the membranes, the cell protoplasts die and the cavity of the vessel fills with water.

Primitive vessels were characterized by great length (reaching 1.3 mm) and small diameter; the lateral walls were marked by scalariform porosity (tulip tree), and the angular cross section of vessel members had scalariform perforations on sloped transverse walls. Highly specialized vessels are composed of short vessel members that in cross section are rounded and have a wide opening (reaching 0.5 mm in diameter). The vessel members have simple perforations on the transverse walls and small alternate pits on the lateral walls (ash, oak).

L. I. LOTOVA

What does it mean when you dream about a vessel?

A vessel in a dream may be the container that holds the dreamer’s valuables. The size and the condition of the vessel—e.g., old and tarnished or new and shiny—may indicate if these are established ideals or things newly acquired. Vessels can also be containers of the self.

vessel

[′ves·əl]
(botany)
A water-conducting tube or duct in the xylem.
(engineering)
A container or structural envelope in which materials are processed, treated, or stored; for example, pressure vessels, reactor vessels, agitator vessels, and storage vessels (tanks).
(naval architecture)
Any craft that can carry people or cargo over the surface of the water.
References in periodicals archive ?
Cardiac tamponade occurs when the pericardium fills with blood from the heart, great vessels or pericardial vessels.
CHD children with congenital rubella infection may have open arterial duct, transposition of great vessels, common arterial trunk, atresia or malformations of atrioventricular and semilunar valve, open atrioventricular canal, Fallot's tetralogy (5-10% of all CHD), IVSD (5%), stenosis of pulmonary artery (Babajanov et al.
A contrast CT scan was conducted and revealed a well-defined mass within the deep lobe of the parotid adjacent to the great vessels.
The most common types of CVMs include atrial or ventricular septal defects, transposition of the great vessels, persistent truncus arteriosus, teratology of Fallot, and coarctations.
Both boys were born with transposition of the great vessels - heart defects that would require several surgeries.
Finally, a double outlet right ventricular defect results from failure of the conus to shift to the center, meaning that both great vessels arise from the primitive bulbus (eventually the fight ventricle) (Van Mierop & Kutsche, 1990).
However, technical difficulties involving the maintenance of a deep water channel prevented rebuilding of great vessels at the port.
On one side of the room there was an enormous credenza with twelve shelves all full, even overloaded, with great vessels of silver and gold with so many precious stones that it was miraculous to look at; but what was even more stupendous was that even.
Director, Heart and Great Vessels Department, Sapienza University of Rome; and Steven J.
The heart, diaphragm and great vessels were thoroughly inspected for possible injuries.
Open Competition: Providing Services For Follow-Up Care (Rehabilitation) Of Citizens Immediately After Hospital Treatment In Connection With A Prior Myocardial Infarction, Unstable Angina, After Operations On The Heart And Great Vessels, After Acute Cerebral Circulatory Disorders In The Sanatorium (Department) At The 2015-2016 Year
The great vessels in mediastinum include the ascending, the descending, and the arch of aorta, left common carotid artery, left subclavian artery, brachiocephalic trunk, and superior vena cava (SVC).