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Why are valves more common in the veins of the limbs than in the abdomen neck and thorax?
Valves are more common in the veins of the limbs because they help prevent the backflow of blood due to gravity, especially when standing upright. In the abdomen, neck, and thorax, the flow of blood is aided by other mechanisms such as muscle contractions and breathing, reducing the need for valves in those areas.
Can you describe 'veins in neck bulging'?
Bulging veins in the neck may be a sign of increased pressure within the veins, such as during physical exertion or due to blocked blood flow. It can also be a symptom of an underlying medical condition like thyroid disorders or heart problems. If you notice persistent bulging veins in your neck, it's important to consult a healthcare provider for a proper evaluation.
What is an example of an anastomosis in the head and neck region?
An example of an anastomosis in the head and neck region is the rete mirabile. This network of blood vessels connects the internal carotid artery with the external carotid artery in some mammals, allowing for collateral circulation and regulation of blood flow to the brain.
What role do nerves play in causing headaches?
Nerves play a key role in causing headaches by transmitting pain signals to the brain when there is irritation or inflammation in the head or neck region. This can be triggered by various factors such as stress, muscle tension, or changes in blood flow.
Where is the internal urethral spinchter located?
The internal urethral sphincter is a smooth muscle located at the neck of the urinary bladder and surrounds the opening of the urethra. It helps in controlling the flow of urine from the bladder to the urethra.
Can a neck chop knock you out?
Yes, a neck chop can potentially knock someone out by causing a sudden impact to the neck that disrupts blood flow or nerve function.
Would an obstruction in the superior vena cava decrease the flow of blood from the head and neck to the heart?
Yes, an obstruction in the superior vena cava would impede the flow of blood from the head and neck to the heart, leading to conditions like increased pressure in the veins and decreased blood return to the heart. This can result in symptoms such as facial swelling, neck vein distention, and difficulty breathing.
Which Nerve cells monitor the flow of blood and transfer this information to the brain?
These are the baroreceptor cells present in Neck.
Do vampires bite the neck?
No, if someone was to be bit by a vampire on the neck they would die istantaniously, no vampire ever bites the neck. It is just a myth, the neck has so many main blood flow areas, they know they shouldn't bite there.
What is a stent in your neck mean?
A stent is a little stiff sleeve placed inside a blood vessel to keep the blood vessel open so the blood can flow freely through it.
What is a mass in the neck with blood supply mean?
A mass in the neck with blood supply typically refers to a vascular lesion or tumor that is receiving blood flow from surrounding blood vessels. This may require further evaluation such as imaging studies or a biopsy to determine the type and potential treatment options.
Is there any connection between arthritis in the neck area and headaches?
I'd be surprised if there wasn't! The blood flow to the brain all goes through the neck. Issues with the neck can lead to headaches and lots of other symptoms.
Are they going to make silly bandz that go around your neck?
1486% No, Circulation of blood flow to the Brain could stop if they did that!
What would cause pain in blood flow in neck when exercising in a 12 year old kid?
Go and see a Doctor.
Why are the neck pulses visible?
The arteries in the neck are very large (to supply blood to the brain), and fairly close to the surface because of all the other stuff in the neck (muscles, spine, trachea, esophagus). So the ebb and flow of blood as your heart pumps can be visible on the surface of the skin.
Why do giraffes have valves in their carotid arteries?
They have very long neck which the pulses in the arteries are not strong enough to push the blood up to the brain. The "VALVES" prevent the back flow of blood.........
What does a giraffe's long neck make it prone to?
eretion problems from lack of blood flow form a Giraffes circualtory sustem from he Pulmonsry veins
