what does the course of a nerve mean

course of a sensory nerve definition, course of a sensory nerve meaning | English dictionary course n 1 a continuous progression from one point to the next in time or space; onward movement

Full Answer

What is a nerve?

... (Show more) nerve, in anatomy, a glistening white cordlike bundle of fibres, surrounded by a sheath, that connects the nervous system with other parts of the body. The nerves conduct impulses toward or away from the central nervous mechanism.

What is nerve pain?

pain in a nerve or along the course of one or more nerves, usually consisting of a sharp, spasmlike pain that may recur at intervals. It is caused by inflammation of or injury to a nerve or group of nerves. Inflammation of a nerve, or neuritis, may affect different parts of the body, depending upon the location of the nerve.

What are the fibres of nerve?

The fibres constituting the individual nerves are very numerous, and all, save those arising in the sympathetic ganglia, extend from the brain or spinal cord to the peripheral structures which they innervate. With respect to function, nerve fibres are divided into two categories, namely, sensory (afferent) and motor (efferent).

What is the word order of nerves in the brain?

The word order mirrors the numerical order of nerves one through 12: Some say marry money, but my brother says big brains matter more. Some say my mother bought my brother some bad beer, my, my. What conditions and disorders affect your cranial nerves?

What is the course of the median nerve?

The median nerve leaves the bicipital aponeurosis and enters the forearm between the two heads of pronator teres muscle and gives off the anterior interosseous nerve. It courses towards the wrist deep to flexor digitorum superficialis and superficial to flexor digitorum profundus muscle.

What does the phrase you have some nerve mean?

Have audacityHave audacity, show effrontery. For example, You have a nerve telling me what to do, or She had some nerve, criticizing the people who donated their time.

What is the full meaning of nerve?

Definition of nerve (Entry 1 of 2) 1 : sinew, tendon strain every nerve. 2 : any of the filamentous bands of nervous tissue that connect parts of the nervous system with the other organs, conduct nerve impulses, and are made up of axons and dendrites together with protective and supportive structures.

What are the 4 types of nerves?

It is conventional, however, to describe nerve types on the basis of their function: motor, sensory, autonomic or cranial.Motor Nerves. ... Sensory Nerves. ... Autonomic Nerves. ... Cranial Nerves.

What does cheeky mean in British slang?

Cheeky: To be cheeky is to be flippant or somewhat of a smart aleck. Considering British humor, I'd say most people here are a bit cheeky.

What is audacity slang?

: a bold and daring quality that is sometimes shocking or rude She had the audacity to show up uninvited.

Is a nerve a vein?

Comparing Nerve and Vein The key difference between nerves and veins is that nerves are an axon bundle of neurons forming a part of the peripheral nervous system carrying nerve impulses, while the veins are blood vessels that give back deoxygenated blood towards the heart.

What is a nerve made of?

Nerves are made up of bundles of axons that work together to facilitate communication between the CNS and PNS. It's important to note that “peripheral nerve” actually refers to the PNS. Axon bundles are called “tracts” in the CNS.

What does nerve mean in medical terms?

A nerve is a cordlike structure composed of fibers that conduct sensory and motor impulses between the brain and spinal cord and other areas of the body.

Do damaged nerves heal?

Nerves recover slowly, and maximal recovery may take many months or several years. You'll need regular checkups to make sure your recovery stays on track. If your injury is caused by a medical condition, your doctor will treat the underlying condition.

What are the top 3 common nervous system disorders?

Here are six common neurological disorders and ways to identify each one.Headaches. Headaches are one of the most common neurological disorders and can affect anyone at any age. ... Epilepsy and Seizures. ... Stroke. ... ALS: Amyotrophic Lateral Sclerosis. ... Alzheimer's Disease and Dementia. ... Parkinson's Disease.

What is the largest nerve in the body?

The sciatic nerveThe sciatic nerve is the longest, largest nerve in your body. Your sciatic nerve roots start in your lower back and run down the back of each leg. Sciatica is the pain or discomfort if your sciatic nerve gets compressed or pinched.

Do you have some nerve?

have a/some nerve. To do something bold, daring, or impudent. Wow, that intern has some nerve asking for a raise on her first day! You really have a nerve, asking Mom for money when you already know she's in a bad mood.

What is the meaning of you've got balls?

COURAGEballs noun [plural] (COURAGE) courage and confidence: You have to admit it - the woman's got balls!

What is the function of mixed nerve?

Mixed nerves are the nerves that perform both the action of sensory nerves as well as a motor nerve. They transform electrical impulses from the central nervous system to the muscles of the body. Generally, the mixed nerves transmit impulses at the rate of 120 metres per second or 432 kilometres per hour.

Where does the musculocutaneous nerve originate?

The musculocutaneous nerve originates from the lateral cord of the brachial plexus (C5-C7) at the inferior border of pectoralis minor muscle. The brachial plexus itself originates from the ventral rami of the C5-T1 nerve roots . The roots emerge between the anterior and middle scalene muscles, and coalesce and mingle to form an upper, middle and lower trunk, which eventually give rise to a medial, lateral and posterior cord (all associated closely with and surrounding the axillary artery).

What is the function of the musculocutaneous nerve?

Musculocutaneous nerve. The musculocutaneous nerve is responsible for very important function we use every day, bending/flexing our elbows. Tasks such as lifting a cup and brushing our teeth can become very difficult if the nerve is not functioning well. The word musculocutaneous gives us a clue as to what the nerve does.

How are the cords named?

The cords are named according to their relation with the axillary artery. Locating the nerve whilst dissecting is simply a case of identifying coracobrachialis, and looking for the nerve entering it. Brachial plexus in a cadaver. Notice musculocutaneous nerve originating from the lateral cord of the plexus.

What muscles are associated with the medial, lateral, and posterior cord?

The roots emerge between the anterior and middle scalene muscles, and coalesce and mingle to form an upper, middle and lower trunk, which eventually give rise to a medial, lateral and posterior cord (all associated closely with and surrounding the axillary artery).

Is the axillary nerve protected?

The nerve is well protected within the axilla and also by musculature in the arm. Imagine for a second that the musculocutaneous nerve has been severed at its roots, so that it is no longer innervating the structures it normally does, i.e. the elbow flexors.

Is the radial nerve affected by musculocutaneous nerve injury?

It is innervated by the radial nerve, so is not affected by musculocutaneous nerve injury. Supination and flexion at the shoulder joint is also weakened but not lost due to role of supinator and pectoralis major respectively. Sensation to the lateral part of the forearm would also be affected.

Overview

A number of cranial nerves send electrical signals between your brain and different parts of your neck, head and torso. These signals help you smell, taste, hear and move your facial muscles.

Function

Your cranial nerves play a role in controlling your sensations and motor skills.

Anatomy

Two of your cranial nerve pairs originate in your cerebrum. The cerebrum is the largest portion of your brain that sits above your brainstem. These two pairs of cranial nerves include:

Conditions and Disorders

Some conditions or injuries can damage parts of the brain where cranial nerves are located. In some cases, a condition may damage only one cranial nerve. Trauma or surgery could injure or sever a nerve.

Care

You can keep your brain, cranial nerves and entire nervous system healthier with a few lifestyle changes. You can:

Overview

The optic nerve is comprised of millions of nerve fibers that send visual messages to your brain to help you see. You have an optic nerve at the back of each eye that connects directly to your brain.

Function

The optic nerve is critical to your vision. It’s an extension of your central nervous system, which includes your brain and spine.

Anatomy

The optic nerve is the second of 12 cranial nerves. Each eye has its own optic nerve.

What is it called when a nerve is only one nerve?

Autonomic nerves control bodily systems like the gastrointestinal and urinary systems. If only a single nerve is affected, it is called mononeuropathy. If several nerves are affected, it is called polyneuropathy.

What are the different types of nerves?

In the peripheral nervous system, there are three primary types of nerves: 1 Sensory nerves control the senses and the body's interpretation of different sensations. 2 Motor nerves control muscle movement and power. 3 Autonomic nerves control bodily systems like the gastrointestinal and urinary systems.

What causes neuropathy in the hands and feet?

The most common cause of peripheral neuropathy is diabetes; prolonged high blood sugar eventually damages the walls of blood vessels, and the small vessels in the hands and feet show signs of damage first. Other possible causes of neuropathy include: Vitamin deficiencies (especially vitamin B12) Medications. Toxins.

What is neuropathy in medical terms?

What is Neuropathy. Neuropathy the medical term for a condition in which there are problems with nerves in the body - either they have been damaged or are affected by a disease. Usually, neuropathy affects the peripheral nervous system rather than the central nervous system (brain and spine).

What is neuropathy surgery?

If neuropathy is due to pressure on the nerve (s), surgery may be necessary to remove the pressure and restore functioning. Lesson Summary. Neuropathy is a broad term used to describe nerve damage or disease. It can affect sensory, motor, or autonomic nerves.

What are the three main types of nerves?

In the peripheral nervous system, there are three primary types of nerves: Sensory nerves control the senses and the body's interpretation of different sensations. Motor nerves control muscle movement and power. Autonomic nerves control bodily systems like the gastrointestinal and urinary systems. If only a single nerve is affected, it is called ...

What are the symptoms of neuropathy?

With sensory neuropathy, the symptoms can include tingling, numbness, hypersensitivity, pain or the inability to feel pain.

What causes pain in the nerves?

It is caused by inflammation of or injury to a nerve or group of nerves. Inflammation of a nerve, or neuritis, may affect different parts of the body, depending upon the location of the nerve. Two common types of neuralgia are that of the trigeminal nerve (see tic douloureux) and that of the sciatic nerve (see sciatica ). adj., adj neural´gic.

What is the term for a burning sensation that is caused by irritation of a nerve?

Neuralgia is defined as an intense burning or stabbing pain caused by irritation of or damage to a nerve. The pain is usually brief but may be severe. It often feels as if it is shooting along the course of the affected nerve.

What nerves are affected by neuritis?

Two common types of neuralgia are that of the trigeminal nerve (see tic douloureux) and that of the sciatic nerve (see sciatica ). adj., adj neural´gic. neuralgia facia´lis ve´ra Ramsay Hunt syndrome.

What causes neuralgia pain?

Neuralgia is caused by irritation or nerve damage from systemic disease, inflammation, infection, and compression or physical irritation of a nerve. The location of the pain depends on the underlying condition that is irritating the nerve or the location of the particular nerve that is being irritated.

What is the term for Fothergill's neuralgia?

Fothergill's neuralgia tic douloureux (trigeminal neuralgia). geniculate neuralgia Ramsay Hunt syndrome. glossopharyngeal neuralgia that affecting the petrosal and jugular ganglion of the glossopharyngeal nerve, marked by severe paroxysmal pain originating on the side of the throat and extending to the ear.

How to treat postherpetic neuralgia?

A whole foods diet with adequate protein, carbohydrates, and fats that also includes yeast, liver, wheat germ, and foods that are high in B vitamins may be helpful. Acupuncture is a very effective treatment, especially for postherpetic neuralgia. Homeopathic treatment can also be very effective when the correct remedy is used. Some botanical medicines may also be useful. For example, black cohosh ( Cimicifuga racemosa) appears to have anti-inflammatory properties based on recent research.

Which neuropathy responds to anticonvulsant drugs?

Glossopharyngeal, trigeminal, and postherpetic neuralgias sometimes respond to anticonvulsant drugs, such as carbamazepine or phenytoin, or to painkillers, such as acetaminophen. Trigeminal neuralgia may also be relieved by surgery in which the nerve is cut or decompressed. In some cases, compression neuralgia (including occipital neuralgia) can be relieved by surgery.