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Veins

Veins are thin blood vessels that carry blood from various body parts to the heart. These have valves in them to prevent back flow of blood.

2,123 Questions

Why does your middle left finger twitch a lot it started after your back injury is it due to that?

Perhaps 15-20 years ago they did a study on people who had a "twitch" somewhere on their body... Such things as your eyelid twitching, finger twitching, etc. The doctors studied MRI's of the brain or area involved, ran a multitude of different chemical tests, and exhaustive physical exams in trying to determine exactly what was happening. After all the exhaustive testing & evaluations, they determined that the cause of these "twitches" was just a terminal muscle fiber nerve reacting for no apparent reason. So, to answer your question, I doubt that the twitching finger is a direct result of your back injury. Perhaps some trauma to your finger area occurred at the time of your back injury and resulted in injury to a nerve in that area and is the culprit...

What is portal vein bypass?

Portal vein bypass surgery diverts blood from the portal vein into another vein. It is performed when pressure in the portal vein is so high that it causes internal bleeding from blood vessels in the esophagus.

Is laser therapy used to treat retinal vein occlusion?

Although treatments for occlusion itself are limited, surgical treatment of the occlusion provides an option.

Why can't the jugular vein be stitched?

There is no way the stitch the jugular vein.

Your blood will be on the floor in 4 minutes... I've seen this, I've done this, you don't want this..

Does moss have veins?

No they don't.

Because they dont have water in side them

What do veins have that maintain unidirectional flow?

veins have valves that prevent back flow, and I believe the pressure within circulatory system prevents back flow.

How many Major valves in the human body?

The human body has four major valves in the heart: the mitral valve, tricuspid valve, aortic valve, and pulmonary valve. These valves regulate blood flow through the heart's chambers and into the major arteries. Additionally, the body has numerous other smaller valves, particularly in the veins, but the four heart valves are the primary ones referred to in this context.

Vein to pulsating out of the head?

Pulsing veins are a sign of stress. I have the same thing. All over my head and face I can feel veins pulsing and can even see them pulsing at the temples and beneath my eyes.

Why injection is given in vein only?

There is more than one injection method:

1. I.V. drip

2. Intravenous Injection

3. Subcutaneous (under the skin)

4. Intra-muscular.

Why do many veins have flap-like valves in them?

It is to allow the blood to flow in one direction - towards the heart, it prevents back flow.

What does Senorita vein mean?

Perhaps you mean "Señorita, ven". That's Spanish for "Lady, come here". "Señorita" is used for unmarried women, similar to "Miss".

What types of veins are there?

There are three major categories of veins: superficial veins, deep veins, and perforating veins. All varicose veins are superficial veins; they lie between the skin and a layer of fibrous connective tissue called fascia.

What is a sycamore leaf's vein pattern?

A sycamore leaf exhibits a palmate vein pattern, characterized by several primary veins that radiate from a central point at the base of the leaf. These main veins branch outwards, resembling fingers extending from the palm of a hand. The secondary veins then further divide, creating a network that enhances the leaf's structural integrity and facilitates nutrient transport. The overall design contributes to the leaf's ability to efficiently capture sunlight and withstand environmental stress.

Whats the function of valves in the peripheral veins?

Valves in the peripheral veins prevent blood from backflow during the off beat of the heart. If not for the valves, the flow of blood would tend to pool at the extremities.

Are chest veins in teenage girls common?

no Yes they are. Some are just more visible that others due to how close to the skin they are and the thickness of the fat layer. During puberty and breast development, the skin will become stretched and thinner and more transparent allowing some veins to stand out more. These should become less visible with time.

What is the pathway of tha blood from renal artery to the renal vein?

renal artery, segmental arteries, interlobar arteries, arcuate arteries, cortical radiate arteries, afferent arterioles, glomerulus, efferent arteriole, peritubular capillaries, venules, interlobar veins, arcuate veins, interlobar veins, renal vein.

What technique used to access the vein?

the technique is to put water and wait after 24 hours and you will discover more vein will access

What are the veins' responses to temperature regulation?

Veins are invisible when the skin is cold while if the skin is warm you can easily see it or it pops out.

Why it is not very dangerous for a person if one of his veins is cut?

The vessels that carry the blood around the body are divided into veins and arteries. Arteries deal with the blood going out of the heart, and the veins deal with the blood going back into the heart.

The veins, being the return path for the blood, sees less pressure than the arteries. An injury to a vein will bleed slower than an injury to an equally sized artery. With a slower bleed, there's more time to stop it before the blood loss becomes life threatening - so it's less dangerous.

Do note that less dangerous doesn't mean safe! All bad bleeds should be treated by a doctor.