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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 does the parasympathetic nervous system stimulate in the micturition reflex?
The parasympathetic nervous system allows the act of micturition. The sympathetic nervous system inhibits it.
What makes a skin cell different from a nerve cell?
A skin cell is different than a nerve cell because they do different jobs. A skin cell protects the body, regulates body temperature, and helps protect from germs trying to get into the body. The nerve cell sends out a message when your brain want to move a part of the body.
Hope this helps.
How is an impulse transmitted between neurons?
The point at which two neurones meet is called the synapse. At this point there are 2 situations:
1: there is no gap, the neurones are physically connected by gap-junctions. This is a rarer situation but does occur. In this case the nerve impulse continues down the second neurone (known as the post-synaptic nerve)
2: there is a small gap (a few micrometers) between the cells. In this case the first nerve, carrying the impulse, (pre-synaptic) causes a release of a chemical known as a neurotransmitter. There are various types of neurotransmitters and each are involved in different situations. When the neurotransmitter reaches the 2nd nerve it binds to the membrane (in most situations) which either causes the cell to depolarize and continue the impulse, or causes hypo-polarization which prevents any other nerve stimulating it.
Short and Simple Answer:
Nerve impulse is transmitted by:
- nerve impulse triggers transmitter substance
- which diffuses across synapse
- the transmitter substance binds with receptor molecule in membrane of next molecule
How do you find your iliopsoas muscle?
Well it's sort of below the hip and belly bottom.
It originates from the lumber area of the back and extends to the pelvic iliac rim, the pass around the hip through the sciatic notch to the hip.
Which systems act on the same organs but in opposite ways?
The Autonomic Nervous System (ANS) regulates the action of smooth muscles, cardiac muscle, and some glands.
In other words, the ANS regulates involuntary (automatic; unconscious) actions.
There are two major divisions of the ANS. The parasympathetic division functions under normal conditions (to maintain homeostasis), and the sympathetic division of the ANS functions under stress.
Some times the sympathetic divison is called the "Fight or Flight" response and the parasympathetic division is called the "Rest and Repose {turkey dinner syndrome)" response.
What would be the result of damage to ventral root of a spinal nerve?
Would lead to loss of both sensory & motor function. Ventral ramus is the anterior division of a spinal nerve.
What are the coordinate muscles of the body?
Coordination of muscles is the muscles working together in sync to move a part of the body.
What is the basis for the functional classification of neurons?
Functionally, neurons or nerve cells are classified into three types,
1. Sensory or afferent neuron- a neuron that carries signals towards brain.
2. Motor or efferent neuron- a neuron that carries signals away from brain.
3. Inter-neuron which is present in gray matter of spinal cord and convert sensory signals into appropriate motor signals during spinal reflex.
Axons are nerve fibers which extend as long, slender projections from nerve cells.
They transmit electrical and electrochemical signals across the gap at a junction(synapse) between them and the other cell.
They tickle kids' feet to test certain things about their emotions and their bodies in a reassuring and comforting away. When they make kids laugh the kids know that they can trust the Doctors and their Mums and they feel comfort and they feel happy. It's not only kids who like being tickled for that matter. As long as the right people in life are the ones doing it to you a few more people in life like being tickled as well esspecially young ladies and I would deffinitely be one to know. I'm 37 and I love the thought of my Mum and my Maternal Figures tickling me. Every night I imagine that they're right there doing it and it gives me a lot of comfort and reassurance. There's nothing shameful about feeling this way. It's actually very very natural for kids and young ladies to feel safe happy and secure being tickled as long as it's done by the right people as in a kid's case Parents or Doctors esspecially of course Mums and for young ladies Mums and Maternal Figures.
Somatic
What are some parts of the frog's nervous system?
Olfactory nerve, Optic nerve, Nasal sack, Trigeminal nerve, Gasserian ganglion, Facial nerve, Auditory nerve, Tympanic membrane, Glossopharyngeal nerve, pneumogastric nerve, First spinal nerve, Branchial enlargement, Branchial nerve, Third spinal nerve, fourth spinal nerve, fifth spinal nerve, sixth spinal nerve, seventh spinal nerve, eighth spinal nerve, ninth spinal nerve, tenth spinal nerve, Femoral nerve, Sciatic nerve, Sympathetic nerve trunk, Lumbar enlargement, Sympathetic ganglia, and Filum terminale.
A momentary change in electrical potential on the surface of a cell, especially of a nerve or muscle cell, that occurs when it is stimulated, resulting in the transmission of an electrical impulse.
&/or "nerve impulses" or "spikes".
What structure supports and connects cells of nervous system?
The structure that supports and connects cells of the nervous system is called glial cells, or neuroglia. These cells provide structural support, protection, and nourishment to neurons, facilitating communication and maintaining homeostasis within the nervous system. Glial cells include astrocytes, oligodendrocytes, microglia, and Schwann cells, each playing specific roles in maintaining the health and function of neural tissues.
The cause of essential tremor is not known, although it is an inherited problem in more than half of all cases. The genetic condition has an autosomal dominant inheritance pattern.
Neurons are the building blocks of the nervous system and transmit information.
