Sensory Neurons

Sensory Neurons By Samantha Lee

What is a Sensory Neuron? nerves that take in information, from the outside world, or body itself, that communicates information to the brain Touch SmellTasteSoundVisionWhat are Sensory Neurons?

Sensory neurons are nerves that take in information from either the outside world, or from within the body itself. Sensory neurons communicate this information to the brain which then issues a response.

What are sensory neurons?Taste SoundTouchSmellvision

www.ehumanbiofield.wikispaces.com taste picturewww. aacintervention.com sound picturewww.okaygeek.com- touch picturewww. legaljuice.com smell picture www. coreyturner.wordpress.com- vision picture2Nervous System Central nervous systemPeripheral nervous systemBrain Spinal cord Somatic nerves(somatic nervous system)Sensory MotorvoluntaryAutonomic nerves(autonomic nervous system)Sympathetic Parasympathic involuntary

The nervous system is split into 2 systems

The central nervous system which is the brain and spinal cord and,

the peripheral nervous system is all the nerves except those in the brain and spinal cord that relay information between the central nervous system and other parts of the body.

The somatic nervous system is motor neurons that are under conscious control, an example would be walking or jumping, or any other movement that you control and also your 5 senses. The senses that tell your brain that your nose is itchy, or that theres a bad smell in the air, or that the sound in your headphones is music your listening to.

The autonomic nervous system is motor neurons that function without conscious control, which is your heart beat, or breathing.3

What are special about Neurons?Are specialized to transmit information throughout the bodyStop reproducing shortly after birthParts of the brain have more neurons at birth then later in lifeNeurons die but are not replaced

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Neurons are similar to other cells in the human body in a number of ways, but there is one key difference between neurons and other cells. Neurons are specialized to transmit information throughout the body.

Unlike other body cells, neurons stop reproducing shortly after birth. Because of this, some parts of the brain have more neurons at birth than later in life because neurons die but are not replaced. 4Are their Diseases linked with Sensory Neurons?Amblyopia, Astigmatism Cataract Color blindness Deafness

Amblyopia, Which is a Lazy eye,

Astigmatism, Which is Blurred vision or unable to focus on something

Cataracts, Which is cloudy vision

Colour blindness, Which is not being able to define different colours that are somewhat similar

Deafness, Not being able to hear

http://www.nervous-system-diseases.com/images/nervous-system-diseases.jpg -picture

What special proteins do neurons have?FAM134BSMA/SMNFound in the Golgi apparatusFunction unknownBelieved that SMA was exclusively in motor neuronsLeading inherited cause of infant death

Cause by a genetic deficiency of SMNNo cures, few therapies have shown positive results.

FAM134B which provides instructions for making a protein important for the survival.Within neurons, the FAM134B protein is found in the Golgi apparatus, However, the function of the FAM134B protein is unknown.

researchers believed that spinal muscular atrophy (SMA) began exclusively in motor neurons, the cells that transmit signals from the spinal cord to muscles telling them to move. But a new study, led by George Mentis suggests for the first time that SMA may also affect sensory neurons, the cells that transmit movements and sensations to the spinal cord. Occurring in about 1 out of every 10,000 births, SMA is the leading inherited cause of infant death in the U.S. The most severe form of the disease begins after birth by weakening the muscles that control movements in the torso, such as breathing, and then spreads outward, weakening more distant muscles in the limbs as a child grows. Muscle reflexes, such as the kick we make when a doctor taps our knees during a check-up, are primarily controlled by sensory and motor neurons. These neurons connect to each other in the spinal cord. Sensory neurons relay sensations, such as the tap, to the motor neurons. Upon receipt, the motor neurons relay the information back to the muscles, producing the kick. SMA is caused by a genetic deficiency of a protein called survival motor neuron protein (SMN). As its name suggests, this protein is vital to motor neurons, and in SMA, a reduced level of the protein eventually leads to a catastrophic loss of motor neurons. Currently there are no cures for SMA. In animal studies, however, a few possible therapies have shown positive results, such as the compound Trichostatin A and the use of gene therapy to correct SMN levels.