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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
What is a nervous system word that starts with g?
Ganglion cells
A ganglion is a biological mass of nerve cells.
What is the emergency system also known as the Fight or flight system?
The sympathetic nervous system is also known as the fight or flight system.
Which neuron have maximum saltatory conduction?
Those neurons with mylenated fibers on the axon have the fastest response.
Optic nerve
A reflex
What is a factor that causes a response?
A stimulus is a factor that causes a response in an organism.
Which part of the brain regulates and coordinates all complex motor activities?
The cerebellum is the part of the brain that controls and coordinates complex motor activities using signals from other parts of the brain and the spinal cord. It is located in the back of the head at the base of the brain.
What is death of brain neurons which results from a sudden cessation of oxygen delivery called?
Cerebral hypoxia
Because it up-regulates heart rate, blood pressure, glucose production (from broken down glycogen) and allows quick reactions and the ability to perform past the normal amounts (i.e. you can run faster, further, etc). It prepares your body for running away from predators (flight) or standing your ground (fight). It is activated by the hormone adrenaline (one of the molecules of the fight or flight mechanism (if in US adrenaline = epinephrine) and the neurotransmiiter noradrenaline.
How does stress affect your nervous system?
Answer this question… A. signals musculoskeletal system to cause rapid and uncontrollable movements B. signals digestive system to stop digesting food C. signals endocrine system to produce hormones to elevate heart and breathing rate D. signals the respiratory system to reduce the breathing rate
Does a pinched nerve need x-raying?
X-rays will not detect a pinched nerve but, depending on the location of symptoms, may be used to find bony abnormalities that may contribute to the condition.
What are the 3 types of neurons that function to respond to physical stimuli?
The three types of neurons that function to respond to physical stimuli are the same ones that react to over exhaustion and triangles. I hope this helped.
Explain what happens to neurotransmitters after they are released?
After neurotransmitters are released in to the synaptic cleft - from the presynaptic neuron, they bind with there specific receptor cites found on the postsynaptic neurons cell membrane. Some neurotransmitters then become inactive by enzymes whiles other simply drift away from the synaptic cleft. Reuptake can also occur where the presynaptic neuron sponges up (or takes back) the remaining neurotransmitters left behind.
Can you live without your head?
Yes, your central nervous system is located inside your left ring finger, so you'll be fine.
What nerve carries parasympathetic fibers to the SA node?
The name of the nerve is vagus nerve. It is the tenth cranial nerve. It comes all the way from skull to supply the organs from thorax and most from the abdomen also. It is purely parasympathetic nerve.
Do schwann cells wrap their cytoplasmic extensions around thick neuron fibers in the CNS?
NO they wrap around the axon in the PNS!
Does someones gender affect their auditory and visual memories?
It is mostly on age. Your memory decreases as you get older.
Load balancing.
