Internal Jugular Vein - Commencement | Termination | Relations | Tributaries | Applied Anatomy
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Course1. It is a direct
Course
1. It is a direct continuation of the sigmoid sinus.It begins at the jugular foramen, andends behind the sternal end of the clavicle by joining the subclavian vein to form the brachiocephalic vein.
2. The origin is marked by a dilation, the superior bulb which lies in the jugular fossa of the temporal bone,beneath the floor of the middle ear cavity.The termination of the vein is marked by the inferior bulb which lies beneath the lesser supraclavicular fossa.
Relations
Superficial
1. Sternocleidomastoid 2. Posterior belly of digastric 3. Superior belly of omohyoid 4. Parotid gland 5.Styloid process 6 The internal carotid artery, and the glossopharyngeal, vagus, accessory and hypoglossal cranial nerves (at the base of skull).
Posterior
1. Transverse process of atlas 2. Cervical plexus 3. Scalenus anterior 4. First part of subclavian artery.
Medial
1. Internal carotid artery 2. Common carotid artery 3. Vagus nerve
Tributaries
1. Inferior petrosal sinus
2. Common facial vein
3. Lingual vein4. Pharyngeal veins
5. Superior thyroid vein
6. Middle thyroid vein
The thoracic duct opens into the angle of union between the left internal jugular vein and the left subclavian vein.The right lymphatic duct opens similarly on the right side.In the middle of the neck, the internal jugular vein may communicate with the external jugular vein through the oblique jugular vein which runs across the anterior border of the sternocleidomastoid.
Clinical Anatomy
Deep to the lesser supraclavicular fossa, the internal jugular vein is easily accessible for recording of venous pulse tracings.The vein can be cannulated by direct puncture in the interval between sternal and clavicular heads of sternocleidomastoid muscle.
In congestive cardiac failure or any other disease where venous pressure is raised, the internal jugular vein is markedly dilated and engorged.
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1. It is a direct continuation of the sigmoid sinus.It begins at the jugular foramen, andends behind the sternal end of the clavicle by joining the subclavian vein to form the brachiocephalic vein.
2. The origin is marked by a dilation, the superior bulb which lies in the jugular fossa of the temporal bone,beneath the floor of the middle ear cavity.The termination of the vein is marked by the inferior bulb which lies beneath the lesser supraclavicular fossa.
Relations
Superficial
1. Sternocleidomastoid 2. Posterior belly of digastric 3. Superior belly of omohyoid 4. Parotid gland 5.Styloid process 6 The internal carotid artery, and the glossopharyngeal, vagus, accessory and hypoglossal cranial nerves (at the base of skull).
Posterior
1. Transverse process of atlas 2. Cervical plexus 3. Scalenus anterior 4. First part of subclavian artery.
Medial
1. Internal carotid artery 2. Common carotid artery 3. Vagus nerve
Tributaries
1. Inferior petrosal sinus
2. Common facial vein
3. Lingual vein4. Pharyngeal veins
5. Superior thyroid vein
6. Middle thyroid vein
The thoracic duct opens into the angle of union between the left internal jugular vein and the left subclavian vein.The right lymphatic duct opens similarly on the right side.In the middle of the neck, the internal jugular vein may communicate with the external jugular vein through the oblique jugular vein which runs across the anterior border of the sternocleidomastoid.
Clinical Anatomy
Deep to the lesser supraclavicular fossa, the internal jugular vein is easily accessible for recording of venous pulse tracings.The vein can be cannulated by direct puncture in the interval between sternal and clavicular heads of sternocleidomastoid muscle.
In congestive cardiac failure or any other disease where venous pressure is raised, the internal jugular vein is markedly dilated and engorged.
----------------------------------------------------------------------------------------------------------------
My website - https://human-anatomy-lessons.busines...
My Blog - https://human-anatomylessons.blogspot...
----------------------------------------------------------------------------------------------------------------
Follow me in blogspot - https://human-anatomylessons.blogspot... _________________________________________________________________________________________________________________ Visit my blogs - https://humananatomyonline.in/
Contact me @ https://t.me/humananatomylessons
5 سال پیش
در تاریخ 1398/05/06 منتشر شده
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