0
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
Does the sympathetic or parasympathetic nervous system have more control?
The sympathetic division as it can override the parasympathetic, but not vice versa
both are antagonistic to each other
but parasympethatic system decreases the rates of the reaction in most of the cases but the sympethatic system increase the rates of the reaction although both are antagonistic to each other
for more information
dr.khizar matloob
+923336333015
Spraying pesticide in the garden
Is the brachial plexus the largest and the longest nerve of the body?
No. The sciatic nerve is. It runs from your lower lumbar region to the tips of your toes.
Which major function of the nervous system is the autonomic operation.?
The autonomic operation of the nervous system primarily regulates involuntary bodily functions, such as heart rate, digestion, and respiratory rate. It controls the automatic processes that maintain homeostasis, functioning without conscious effort. The autonomic nervous system is divided into the sympathetic and parasympathetic divisions, which work together to respond to stress and maintain balance in the body.
What branch of cranial nerves is responsible for monitoring changes in the equilibrium?
the vestibular branch
The classic definition for an involuntary action would be a reflex. For example the doctor taps your knee and a monosynaptic (nerve to spinal cord and back again to the knee) contracts the muscles to cause the leg to kick. There are other interesting actions. Go into a room and make a loud noise and people turn to the noise. That is also a reflexive movement. Of course, coughing, sneezing, and the hick-ups are also involuntary actions.
Does sympathetic or parasympathetic stimulation produce thicker saliva with more mucus?
Sympathetic. Parasympathetic secretes thin saliva rich in amylase.
Brain
What is the role of acetylcholinesterase to acetylcholine?
The acetylcholinesterase (AChE) essentially works against acetylcholine (ACh). AChE will break up the ACh into its two main groups, acetate and choline so that it is not able to do its job.
(In the case of certain diseases, like Alzheimer's, AChE can result in negative effects, and drugs are given to prevent the action of AChE.)
Where can someone find more information about a Central Parking system?
For information about Central Parking systems in general, the Central Parking website is a good source of information. For details on specific Central Parking systems, such as the New York City Central Parking system, one could check the specific website for that area.
What component of blood helps with clotting and is made from fragments of larger cells?
Blood Platelets
What two structures make up the central nervous system?
The components that make up central nervous system consists of two main parts. The central nervous system is made up of the brain and the spinal cord.
Is there any nerve endings in bones?
Proper grammar dictates that you use "are" instead of "is" in this sentence because the word ending is pluralized.
Which two involuntary muscles are located in the front part of the choroid?
One of the two muscles that make up the front part of the choroid is the ciliary muscles. Another one that makes up the choroid is the iris.
What is the parasympathetic and Sympathetic effect on the stomach?
The parasympathetic is stimulatory to stomach , increase the gastric secretion and motility while the sympathetic is inhibitory , decrease the gastric secretion and motility
You pull your hand away after touching a hot pan is this a somatic or automatic reflex?
This is an automatic reflex that occurs at the spinal cord level. It involves two neurons: one that brings "pain" information into the cord and one that carries the motor reflex out to the muscle. This is a very fast response. It would take longer to go the the brain and back. A third neuron often sends a "report" to the brain.
What is vascular reflexogenic zones?
They are area in the blood vessels that have high concentration of receptors [e.g pulmonary artery,svc&ivc,aortic arch and bifurcation of the common carotid artery].
What is hyperpolarization of a dendrite by a neurotransmitter called?
According to Biologists, the hyper polarization of a dendrite by a neurotransmitter is known as an inhibitory postsynaptic potential (IPSP).
