Prab at 20:42, 29 January 2025

2025-01-29T20:42:02Z

← Older revision		Revision as of 20:42, 29 January 2025
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	5. The '''[[oblique vein of the left atrium]]''' (''[[v. Obliqua atrii sinistri]]'' ''[[marshalli]]''; ''[[oblique vein of marshall]]'') is a small vessel which descends obliquely on the back of the left atrium and ends in the coronary sinus near its left extremity; it is continuous above with the '''[[ligament of the left vena cava]]''' (''[[lig. Venæ cavæ sinistræ vestigial fold of marshall]]''), and the two structures form the remnant of the left cuvierian duct.		5. The '''[[oblique vein of the left atrium]]''' (''[[v. Obliqua atrii sinistri]]'' ''[[marshalli]]''; ''[[oblique vein of marshall]]'') is a small vessel which descends obliquely on the back of the left atrium and ends in the coronary sinus near its left extremity; it is continuous above with the '''[[ligament of the left vena cava]]''' (''[[lig. Venæ cavæ sinistræ vestigial fold of marshall]]''), and the two structures form the remnant of the left cuvierian duct.

	~~<center>http~~:~~//www~~.~~Wikimd.Org/images/gray/large/image556.gif </center>~~		[[File:Gray556.png\|thumb\|Fig. 556– base and diaphragmatic surface of heart. (''picture from the classic gray's anatomy'')]]

	Fig. 556– base and diaphragmatic surface of heart. (''picture from the classic gray's anatomy'')

	The following cardiac veins do not end in the coronary sinus:		The following cardiac veins do not end in the coronary sinus:

Prab at 19:21, 5 December 2020

2020-12-05T19:21:27Z

New page

[[anatomy]] > [[gray's anatomy| gray's anatomy of the human body]] > vii. The veins > 3. The systemic veins

[[henry gray]] (1821–1865). Anatomy of the human body. 1918.

'''3. The systemic veins'''

The '''[[systemic veins]]''' may be arranged into three groups:
(1) the '''[[veins of the heart]]'''
(2) the veins of the '''[[upper extremities, head, neck]]''' and '''[[thorax]]''' which end in the superior vena cava.
(3) the veins of the '''[[lower extremities, abdomen]]''' and '''[[pelvis]]''' which end in the inferior vena cava.

* '''[[veins of the heart]]'''
* '''[[coronary sinus]]'''
* '''(vv. Cordis)'''

—most of the veins of the heart (fig. 556) open into the coronary sinus.
This is a wide venous channel about 2.25 cm. In length situated in the posterior part of the coronary sulcus, and covered by muscular fibers from the left atrium.
It ends in the right atrium between the opening of the inferior vena cava and the atrioventricular aperture, its orifice being guarded by a semilunar valve, the '''[[valve of the coronary sinus]]''' (''[[valve of thebesius]]'').

'''[[tributaries]]'''—its tributaries are the great, small, and middle cardiac veins, the posterior vein of the left ventricle, and the oblique vein of the left atrium, all of which, except the last, are provided with valves at their orifices.

1. The '''[[great cardiac vein]]''' (''[[v. Cordis magna; left coronary vein]]'') begins at the apex of the heart and ascends along the anterior longitudinal sulcus to the base of the ventricles.

It then curves to the left in the coronary sulcus, and reaching the back of the heart, opens into the left extremity of the coronary sinus. It receives tributaries from the left atrium and from both ventricles: one, the '''[[left marginal vein]]''' is of considerable size, and ascends along the left margin of the heart.

2. The '''[[small cardiac vein]]''' (''[[v. Cordis parva; right coronary vein]]'') runs in the coronary sulcus between the right atrium and ventricle, and opens into the right extremity of the coronary sinus. It receives blood from the back of the right atrium and ventricle; the '''[[right marginal vein]]''' ascends along the right margin of the heart and joins it in the coronary sulcus, or opens directly into the right atrium.

3. The '''[[middle cardiac vein]]''' (''[[v. Cordis media]]'') commences at the apex of the heart, ascends in the posterior longitudinal sulcus, and ends in the coronary sinus near its right extremity.

4. The '''[[posterior vein of the left ventricle]]''' (''[[v. Posterior ventriculi sinistri]]'') runs on the diaphragmatic surface of the left ventricle to the coronary sinus, but may end in the great cardiac vein.

5. The '''[[oblique vein of the left atrium]]''' (''[[v. Obliqua atrii sinistri]]'' ''[[marshalli]]''; ''[[oblique vein of marshall]]'') is a small vessel which descends obliquely on the back of the left atrium and ends in the coronary sinus near its left extremity; it is continuous above with the '''[[ligament of the left vena cava]]''' (''[[lig. Venæ cavæ sinistræ vestigial fold of marshall]]''), and the two structures form the remnant of the left cuvierian duct.

<center>http://www.Wikimd.Org/images/gray/large/image556.gif </center>

Fig. 556– base and diaphragmatic surface of heart. (''picture from the classic gray's anatomy'')

The following cardiac veins do not end in the coronary sinus:
# the '''[[anterior cardiac veins]]''' comprising three or four small vessels which collect blood from the front of the right ventricle and open into the right atrium; the right marginal vein frequently opens into the right atrium, and is therefore sometimes regarded as belonging to this group;
# the '''[[smallest cardiac veins]]''' (''[[veins of thebesius]]''), consisting of a number of minute veins which arise in the muscular wall of the heart; the majority open into the atria, but a few end in the ventricles.

{{grays}}
[[category:anatomy]]

The Systemic Veins - Revision history

Prab at 20:42, 29 January 2025

Prab at 19:21, 5 December 2020