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Spinal Cord

The spinal cord is long, cylindrical rod present inside the neural canal of vertebral column. It is a part of central nervous system and controls reflex actions of the body.

1,619 Questions

How are the functions of the brain and spinal cord different?

There is upper motor neuron in spinal cord. There is lower motor neuron in the spinal nerve.

Healing time for L4 L5 spinal fusion?

I had a C4 to C6 fusion. My bones accepted my donor's bones well and my cervical spine fused properly to the donor graft. It took 8 weeks before I could return to University. I got my neck brace off at about 8 weeks, but I didn't feel completely better for at least another 10 weeks. Sooo, I personally returned to life after about 2 months. I do not know if this is an average time, but if your body accepts the grafts you will be on your feet soon enough. Do as the doctor says, do not fool around and you will get your life back in time.

All patients react to surgery and to rehab differently. You need to allow 6 months to 1 year for complete recovery so that you won't be tempted to rush and try to force your body to heal.

What is the purpose of spinal instrumentation?

Spinal instrumentation is a method of straightening and stabilizing the spine after spinal fusion, by surgically attaching hooks, rods, and wire to the spine in a way that redistributes the stresses on the bones and keeps them in proper alignment.

What is flatten ventral spinal cord displacing the thecal sac anteriorly?

Looking down on the involved levels (L5-S1), the top is toward your abdomen (NOON) and the back is toward the back (6 O'clock). I'll describe what happens, referring to times on the clock. Between each vertebra are thick disks: these comprise of a thick wall on the outside, filled with a thick gel. This acts as a "shock absorber". Nerves travel down the spinal canal as a thick cord of nerves and this cord is encased in a 3-layered sac, or envelope. Each nerve arises at a point in the brain, and travels down the cord, exits at its determined level and travels down the body to where it is designed to go/operate. Over the years these disks begin to wear out and flatten or possibly bulge out (like squashing a marshmallow). Sometimes, trauma --or bending or leaning with/without heavy lifting-- can cause a herniation in the side of this disk, and the resulting herniation can cause problems by pinching a nerve. If the herniation occurs at 5 o'clock or 7 o'clock, the herniation can pinch (trap) a nerve as it is preparing to leave the spinal cord and travel down the body, resulting in a severe burning pain and possibly muscle cramps if the nerve travels to the spasming muscle. If the herniation occurs at the NOON position, since no nerves (only blood vessels and bowel), there is no pain (actually, there can be pain, but it is not from nerves being pinched... there are pain fibers in the disk). If the herniation occurs at the 6 o'clock position no nerves will be trapped or pinched because there is a lot of space in the spinal canal where the spinal cord travels, but the sac surrounding the cord as it runs down the body CAN be indented. This is what the xray is describing, and there is nothing to worry about in this case...

Can you stay in the army after spinal fusion for c5-c6 and c6-c7?

I also wanted to know that information. I have had a spinal fusion at L5-S1. The answer is no. Any fusion surgery is a disqualifcation. I am bummed too:( Sorry!!!

I am 38 with prior service and wanting to join the Army. I also have a L5-S1 fusion. My recruiter said that it might be possible to get a waiver for this and join. But I also have no physical complications from having the surgery back in 2001.

What fiber tracts carry signals about voluntary movement to the spinal cord?

The basal ganglion are responsible for carrying the impulses from the cerebral cortex to the cerebellum. The impulses pass through the brain stem in an area called the pons where they cross-over and switch sides of the body. This is why your left side of your brain controls the right side, and visa versa.

Thin innermost membrane attached to surface of the spinal cord?

The thin like membrane that covers the brain is "Dura Matter", and the thin like protection surrounding the spinal cord is a "mylein Sheath".

Can a viral infection of the spinal cord cause paralysis?

yes it can, paralysis will appear with any type of spinal cord injury

What system is the spinal cord part of?

It's the part of the central nervous system.

The trachea is ANTERIOR to the spinal cord?

No, the trachea and the spinal cord run parallel from about the base of the skull to the lungs. The spinal cord is superior to (above) the trachea, that means the spinal cord lies dorsally to the trachea. You could also say that the trachea is inferior to the spinal cord.

When you are doing body directions on a human, you have to lay the human on his belly. Anterior is towards the head; Posterior, towards the tail end. If you are a surgeon, then left and right are your left and right while facing the patient.

The spinal cord extends from what part of the skull?

The spinal cord extends from the brain stem to the coccyx. The exact length depends upon the individual, but it is something like a yard.

Can a person be born without vocal cords or a voicebox?

vocal cord differences in different genders include the following: size-women's smaller=higher pitch, men's bigger=lower pitch length-depends, male sizes=17mm-25mm, women sizes=12.5 mm-17.5mm tissue shape-can change sound!!!!! Yes. You can be born without vocal cords. It would be a birth defect.

What flaxen cord?

It's a plant fiber that by itself it weak, but can be woven together to make ropes.

What are the function of the vocal cords in speech?

The vocal cords are capable of producing vibration in such a way as to create sound (and song!)

Descending tracts within the spinal cord carry what kind of impulses to the muscles?

To make it simple, they are 3 types of descending (efferent) tracts of spinal cord:

  • Pyramidal tracts = lateral and anterior corticospinal tracts + corticobulbar tract
  • Extra-pyramidal tracts= Vestibulospinal + Reticulospinal (Lateral and medial) + Olivospinal + Rubrospinal + Tectospinal tracts
  • Descending autonomic

What part sends messages from your brain and spinal cord to muscle cells?

Electrical impulses travel from the brain along the spinal cord and nerve fibers to the muscles.

Brain send the message via nerve impulses involving neurons which use the neuro-transmitter Acetylcholine.