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Nervous System
This category is for questions about the mechanical and chemical process of reactions to internal and external stimuli, ranging from the brain down to the spinal cord, and all nerves, cells and tissues in between.
3,047 Questions
How do the organs of the nervous system work together?
The central nervous system is the brain and the spinal cord, and the peripheral nervous system is the motor and sensory neurons. So your sensory neurons are what help you feel things, like cold and hot and pain, etc. This is a pretty open-ended question, but I would say they keep us alive when they work together by alerting of us of our environment.
What is the role of the neurons in transmitting electrochemical impulses?
They send the chemical impulses that are released at the synapses from the synaptic terminal of the axon of the first neuron. It merges from the dendrites to the second neuron.
Table of the nervous system responsablefor maintaining the internal temperature of the body?
The Hypothalamus controls body temperature, thirst, fatigue etc
How was the nervous system formed?
The brain is the result of the evolution through natural selection over many millions of years.
What are neurons that detect stimuli in the environment?
They are nerves. These nerves tell us exactly what we feel, and then send that information to the brain.
What gland directly stimulated by the nervous system to secrete hormones?
adrinal gland stimulates the nervous system
What part of the central nervous system interprets information collected be the senses?
by the brain throught the heart
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What are the primitive reflexes of a newborn?
All living things have reflexes. If you get something in your eye, you blink. That's a reflex. If you get hit on the nerve in your knee, you leg jumps. It's part of being alive. Doctors test babies' reflexes to determine if they are neurologically normal.
How does information get from receptors to the central nervous system?
The information gets from the receptors to the central nervous system by traveling from one neuron to another through a process in which neurotransmitters are released at synapsis between the neurons.
What are the factors which affect the nerve conduction velocity?
The factors affecting nerve conduction velocity are as follows:
(i) Axon diameter:
An axon with a larger diameter conducts faster. In an unmyelinated fiber, the speed of propagation is directly proportional to the square root of the fiber diameter (D), i.e.,
Conduction velocity a D
(ii) Myelination and saltatory conduction:
Myelination speeds up conduction. Thus, the action potential travels electrotonically along the long myelinated segments, and fresh action potentials are generated only at the nodes. This is called saltatory conduction. In a myelinated neuron, the conduction velocity is directly proportional to the fiber diameter (D).
(iii) Temperature:
A decrease in temperature slows down conduction velocity, (iv) Resting membrane potential. Effect of RMP changes on conduction velocity is quite variable. Usually, any change in the RMP in either direction (hyper polarization or depolarization) slows down the conduction velocity.
What are the 3 major structures of the nervous system?
The most important part of the nervous system is the central nervous system because this system is made up of the brain and the spinal cord.
What is the most abundant tissue in the human body?
Opinions from WikiAnswers contributors: Connective tissue is most abundant and widely distributed tissues in the body. Depending on the country, fat.... collagen, a protein, is the most abundant. collagen is a tough but flexible material that is found in places such as joints.
What part of the nervous system is the sympathetic and parasympathetic?
No. While they are both composed of neurons and support cells, they are classified under different branches of the nervous system. The brain is a part of the central nervous system, while the autonomic nervous system is part of the peripheral nervous system.
What other system is in place to protect the nervous system?
The nervous system is divided into two major parts called the central nervous system (CNS), which is made up of the brain and spinal cord, and the peripheral nervous system (PNS).
The peripheral nervous system is broken down into the somatic nervous system and the autonomic nervous system.
Scientists further divide the autonomic nervous system into the sympathetic and the parasympathetic nervous system.
What is the largest and most complex part of the nervous system?
The nervous system needed a big boss to manage all the neurological parts of the organism. The brain organizes everything and it transmits directives to all organs.
The neurological big boss has a hard task to guarantee that all organs are able to work precisely.
-Cutieful :)
How would you define peripheral nervous system?
The peripheral sytem is the outer layering of the nervous system.It is attached to all sorts of nerves and also the spinal cord The peripheral nervous system is the part of the nervous system that controls the limbs. The peripheral nervous system contains nerves and ganglia outside of the brain and spinal cord.
How does nervous system make us stay alive?
well quite simply it supplys the heart and lungs with a signale to work without your nervuos system you could not move muscles including involintary muscles such as heart &lungs this is y when you get parlyzed from spinal cord injury you may or may not need a breathing machine
Because it transfers neuro-signals to your brain signaling what bodily function it must perform.
The nervous system is divided into which two subsystems?
The Central Nervous System and Peripheral Nervous system
What part of the nervous system is essential for it work properly?
My guess would be CNS (Central Nervous System)
But heres a site, just incase this isn't the correct answer:
http://www.Biology-online.org/8/1_nervous_system.htm
