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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 does fear affect the nervous system?
Yes it contains fear, because it releases a certain Chemical, that will make you more alert of your surroundings, and usually if there is any SUDDEN Movement you will respond with The Flight/Fight Response. You will Run for Dear Life, Or You Will Fight.... For Your Life, That's pretty Nerve-Racking when you think about it... S o my point Being Is YES, the Nervous System DOES control Fear..... (-:
What is the difference between hormonal and nervous responses?
HormonalControl: Nervous Control:
1 Involves Hormones 1 involves impulse
2 Hormones transportd by blood 2 transmitted by neurons
3 Slow Response 3 Immediate response
4 Response can be short lived 4 Response Shortlived
or long lived
5 Always involantry 5 Voluntry or involuntry
6 May affect more than one target 6 Usually Localised
organ
the nervous control is short and snappy and helps to keep the nervous coordinated and the hormonal helps to keep the chemicals coordinated and takes longer to react but last longer.
What is the substance that halts the stimulation of a muscle fiber by a neuron called?
acetycholinesterase
What carries motor responses from the central nervous system to muscles glands and other organs?
brain stem
What is the integrative of the nervous system?
interneurons carry out the integrative function of the nervous system.
Does diffusion or osmosis take place in the nervous system?
Diffusion is the process of cell transfer within the nervous system. It is diffusion of the ions that allows for transport and solubility to complete the process. Osmosis is used in other cellular areas.
sympathetic chains
What is the function of protein called hypocretin?
Functions of hypocretin Apart from their primary role in the control of sleep and arousal, the hypocretins have been implicated in multiple functions including feeding and energy regulation, neuroendocrine regulation, gastrointestinal and cardiovascular system control, the regulation of water balance, and the modulation of pain. A role in behaviour is also postulated. The cell bodies responsible for hypocretin synthesis are localized to the tuberal part of the hypothalamus, the so-called feeding centre. The observation that Hcrt-1 increases metabolic rate and the demonstration that insulin-induced hypoglycaemia activates up to one-third of hypocretin containing neurons has led to the suggestion that the hypocretins are mediators of energy metabolism. The neuroendocrine effects of the hypocretins include a lowering of plasma prolactin and growth hormone and an increase in the levels of corticotropin and cortisol, insulin and luteinizing hormone. Central administration of the hypocretins increases water consumption, stimulates gastric acid secretion and increases gut motility. The hypocretins increase mean arterial blood pressure and heart rate. The localization of long descending axonal projections containing hypocretin at all levels of the spinal cord suggests a role in the modulation of sensation and pain. Strong innervation of the caudal region of the sacral cord suggests a role in the regulation of both sympathetic and parasympathetic functions.
Neurons send their impulses up and down the spinal cord. The myelin sheath is the coating around the spinal cord that protects it, and works to better conduct the signals along the cord. A neuron that has no myelin sheath will have a harder time conducting signals than one that is covered by the sheath.
How does eating a piece of pizza involve both the somatic and autonomic nervous system?
how does eating a piece of Pizza involve both the somatic and autonomic nervous system
What statements characterizes an excitatory neuron?
It sends an impulse back to the cell body of the neuron
the muscle arterioles have α-adrenergic receptors and the skin arterioles have β-adrenergic receptors
Numerous nerve impulses arriving at a synapse at closely timed intervals exert a cumulative effect?
temporal summation
What is the purpose of an automatic call distribution system?
The purpose of an automatic call distribution system is to automatically route calls specific terminals. It makes it easier to categorize calls to send to specific agents instead of having them wait in a queue.
When writing with a pencil are you using your somatic nervous system?
No you are using the central nervous system
What are the two parts of nervous system identify each part?
central nervous system (brain an spinal cord)
peripheral nervous system (anything else)
Where is the brain stem located?
It is located above the spinal cord and below the thalamus of the brain. It is sometimes called the reptilian brain. It consists of the medulla, pons and the mid brain.
