You can be born without a jugular vein.
Being born without a jugular vein is a condition that is also known as internal jugular vein agenesis and is an extremely rare developmental anomaly, which affects only around 0.05% to 0.25% of the world population.
When one internal jugular vein is absent, your body will naturally compensate by enlarging the opposite or contralateral jugular vein and utilize a network of smaller collateral veins to ensure proper drainage of blood from the brain.
Most people born without a jugular vein have no symptoms and are entirely unaware of it and in very rare instances, it has also been linked to persistent and dull headaches.
It's also often fund by pure coincidence during unrelated neck surgeries, imaging tests like CT scans or MRIs or when doctors attempt to insert a central line.
Being born without a jugular vein is harmless, but knowing about the missing jugular vein is also critical for medical procedures.
Because the anatomy is unusual, doctors, especially surgeons and intensivists have to be aware of the missing jugular vein to avoid dangerous complications during neck surgeries or when they attempt to place intravenous lines.
The jugular vein is so important because the jugular veins return blood from the brain back toward the heart.
Jugular veins are vital to life as they act as the primary drainage system for the brain and head and ensure that deoxygenated blood returns to the heart.
Without the steady outflow of blood, pressure would build up within your skull and can lead to brain damage.
Your internal jugular vein is the dominant path for blood that leaves the brain and it also ensures that your brain, which uses around 15 percent to 20 percent of your body's total blood flow, can continuously receive the fresh, oxygenated blood that it needs.
The jugular veins also help regulate intracranial pressure and if the jugular veins are compressed or blocked, it can lead to severe headaches, tinnitus or ringing in the ears and vision problems.
Doctors also use the Jugular Venous Pressure as a non invasive pressure gauge for the heart and any visible bulging or distention can signal heart failure or fluid overload.
And because of it's size and location, your internal jugular vein is also a frequent site of placing central venous catheters to deliver medications, fluids or even perform dialysis.
And unlike arteries, that are often buried deeper for protection, your jugular veins are relatively superficial and any significant injury to them can result in rapid, life threatening blood loss.
The internal jugular veins are the main vessels that drain deoxygenated blood from your brain and they collect blood from your brain, face and your neck and transport the blood down the neck to your heart.
The internal jugular vein acts as the main exit point for blood from your dural venous sinuses, which receive the blood from your brain parenchyma.
And while your internal jugulars handle the majority of the drainage of blood from the brain, smaller amounts of blood from the brain can also drain through vertebral and other collateral veins.
These veins also ensure smooth blood flow to and from your brain, which is also essential because your brain requires a high amount of oxygen to function properly and remain healthy, the brain receives 15 percent to 20 percent of your heart's total output of blood.
Any obstruction or compression on your internal jugular vein can result in increased cranial pressure, which results in symptoms like headaches, brain fog and vision problems.
Your external jugular veins on the other hand, primarily drain your superficial structures of your face and your scalp.
The jugular vein is on both the left side and right side of your neck.
In your neck, there's an internal jugular vein and an external jugular vein on each side of the neck.
The jugular veins on both the left side and right side of the neck, drain blood from your brain, face, and neck down to your heart.
Your jugular veins are also paired structures, with the right internal jugular vein often being slightly larger than the left side jugular vein.
The jugular veins run vertically down the lateral sides of your neck, deep to or along the sternocleidomastoid muscle.
And the internal jugular vein, is located deeper in your neck, lateral and anterior to your carotid artery.
The external jugular vein is located more superficially, running across your sternocleidomastoid muscle.
And for medical procedures, the right internal jugular vein is also often most preferred, because the right internal jugular vein provides a straighter path to your heart.
Your jugular veins are paired vessels in your neck, which return blood from your brain, face and neck to your heart, most specifically through your superior vena cava.
There are also 3 main types of jugular veins, which include the internal jugular vein, external jugular vein and the anterior jugular vein, which run along both sides of your neck.
Your internal jugular vein is the largest jugular vein, that drains blood from your brain, and the external jugular vein drains the superficial face.
The internal jugular vein, begins at your skull base and then descends in your carotid sheath along the side of your neck to joint your subclavian vein.
The external jugular vein, runs superficially over your sternocleidomastoid muscle.
The jugular veins are crucial for draining deoxygenated blood and toxins away from the brain.
The jugular veins are also used for evaluating cardiac health, through jugular venous pressure and for placing of central IV lines.
Obstruction of your internal jugular vein can result in intracranial hypertension, which can result in symptoms like dizziness, vertigo, chronic heads, tinnitus or ringing in the ears, visual issues and cognitive fog.
Injury to your jugular vein is also life threatening as a result of high risks of severe bleeding or air embolism.