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The trochlear nerve is also known as cranial nerve IV (CN-IV). It is the only cranial nerve that emerges dorsally from the brain, which also makes it the longest pathway. It is the smallest nerve to service the eye. CN-IV passes through superior orbital fissure, and it provides for only a motor function. It serves the superior oblique eye muscle and connects to the annular tendon. As a result, it processes brain signals to move eyes up and down and outwards. Whether due to a head injury or a complication of surgery, damage to this nerve will compromise some ability to use the superior oblique eye muscle. Without the use of the nerve, the superior oblique eye muscle will not no longer function properly. The muscle, not the trochlear nerve, physically moves the eyeball. Double vision, otherwise known as diplopia, results from problems with muscle or the nerve. Complications from these issues will result in a diminished ability to walk, especially down stairs.
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Does the foramen magnum go through the occipital bone?
Yes, the foramen magnum is a large opening at the base of the skull that allows the spinal cord to connect with the brain. It is located in the occipital bone, which forms the back and base of the skull.
What type of messages travel from nerve cells?
They go through synapses.
How often do nerve cells go through the cell cycle?
Nerve cells, also known as neurons, typically do not go through the cell cycle to divide and reproduce. They are terminally differentiated cells that do not undergo cell division once they have matured. This is why nerve cell damage or loss is often irreversible.
Where does the vagus nerve go through?
The vagus nerve passes through the neck and enters the thorax where it descends through the chest and abdomen, innervating organs such as the heart, lungs, and digestive system. It is the longest nerve of the autonomic nervous system and plays a key role in regulating many bodily functions.
Why don't nerve cells go through mitosis?
Nerve cells do not go through mitosis because they are in a non-dividing phase called G0 phase. Once nerve cells mature, they lose the ability to divide and replicate. This is because they have specialized structures and functions that would be disrupted by cell division.
Another name for auditory nerve?
The auditory nerve is associated with facial nerve. Both of them exits the skull through the internal acoustic meatus. The facial nerve leaves the skull through stylomastoid foramen to go to the face. This nerve is also associated with the sense of hearing and balance.
What does foramina are patent mean?
Foramen is Latin for 'hole'. Paten means "open"... The term means the holes in the spine where nerves go through are wide open... (that's a good thing!!)
Does the foramen magnum go through the occipital bone?
Yes, the foramen magnum is a large opening at the base of the skull that allows the spinal cord to connect with the brain. It is located in the occipital bone, which forms the back and base of the skull.
What cells go through mitosis?
nerve cells and sex cells
What type of messages travel from nerve cells?
They go through synapses.
Why does the spinal cord has a lot of nerve receptors?
its the cns and all nerve receptors go through here to respond to the rest of the body
How often do nerve cells go through the cell cycle?
Nerve cells, also known as neurons, typically do not go through the cell cycle to divide and reproduce. They are terminally differentiated cells that do not undergo cell division once they have matured. This is why nerve cell damage or loss is often irreversible.
Where does the vagus nerve go through?
The vagus nerve passes through the neck and enters the thorax where it descends through the chest and abdomen, innervating organs such as the heart, lungs, and digestive system. It is the longest nerve of the autonomic nervous system and plays a key role in regulating many bodily functions.
What cranial nerve allow you to tract with eye?
Optic nerve is the nerve which carries signal from Retina to brain.This is second cranial nerve.(First being Olfactory coming from nose.)It enters the brain through For-amen called Optic For-amen.Actually this nerve is extension of the brain tissue inside the eye.You have two parts of visual fields in retina. Temporal or outer and Nasal or medial. After optic nerve enters the brain,temporal fibers go on to the same side of Visual area situated at Occipital lobe.The fibers coming from Nasal side cross to apposite side of brain. This crossing is done at optic chiasma.there are other three nerves supply to outer eye muscles. The third cranial nerve called as Oculomotor supply to 4 eye muscles.The muscles are superior rectos, inferior rectos,medial rectos and inferior oblique.Forth cranial nerve called as Trochlear nerve supply to superior oblique muscle.Sixth cranial Abducent nerve supply to lateral rectos muscle.
Where do blood vessels and nerves enter and leave the bone?
All bones have foramen in them. These are canals or openings through which nerves and blood vessels go.
What living cell does not go through mitosis?
1st answer) i think all cells go through mitosis the process of cell division 2nd answer) Mostly all cells go through mitosis, but sex or reproductive cells go through meiosis instead.
What are the symptoms of a nerve injury?
If someone got a nerve injury, there are a lot of symptoms one could go through. Once of these symptoms are Amyotrophic Lateral Sclerosis (ALS) or Lou Gehrig's Disease.
