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Are involuntary responses the only part of the autonomic system?
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What is the difference between two parts of the PNS?
The somatic nevous system controls voluntary movements while the autonomic nervous system only controls involuntary movements.
What is the difference between involuntary muscle and cardiac muscle?
Voluntary (or skeletal) muscle cells, involuntary (or smooth) muscle cells, and cardiac (or heart) muscle cells, all have thick and thin filaments (myosin and actin, respectively), for their sliding filament mechanism, enabling movements However, since their funscions are different, there are significiant differences in their structures: shapes, sizes, proportion of filaments, their response to stimulus, and the kind of stimulus itself, for example.
What is the involutary muscle?
Cardiac muscle (heart muscle): a type of striated muscle exclusively in the heart, can be called an involuntary muscle, although it may be classified separately due to its structural differences. It is controlled by nerve impulses produced by a natural pacemaker called the sinoatrial node, the rate of which is controlled by the autonomic nervous system. Smooth muscles, a type of non-striated muscle, include the radially arranged iris muscles, the digestive system, reproductive system, major blood vessels, the skin, and internal organs. These are also controlled by the autonomic nervous system. Involuntary muscles are muscles controlled only by the central nervous system, and (in some cases) by hormones. These cannot be controlled consciously. The pupils of the eye are an example of this as they contract quickly when the eye is exposed to bright light
A reflex pathway having only one synapse in the CNS?
Reflexes are rapid involuntary responses to a given stimuli. The reflex pathway that only has one synapse in the CNS is called the monosynaptic reflex arc.
Are autonomic reflexes integrated in the cns?
Autonomic reflexes concerning digestive, smooth muscle, respiration all have to do with the Peripheral Nervous System (ANS, SNS, and ENS). <-- look it up if you dont know what that is. But the CNS is only the brain and the spinal cord... and there arent any autonomic reflexes there.
Are basic reflexes autonomic only?
yes
Is Autonomic ganglia are motor ganglia only?
yes
Are smooth muscles under voluntary control?
Smooth muscles are found in blood vessels and in organs (ie the bladder), and is stimulated by the autonomic nervous system, the control system for involuntary reactions. Smooth muscles can also be controlled by hormones, neurotransmitters and other chemicals such as calcium and potassium. Depending on what chemical binds to the muscles receptor sites will change what type of reaction occurs within the muscle itself. For example if you were frightened, your heart would beat faster, you would breathe deeper -- and not because you wanted to do it, but because your body automatically reacted to the stimulus. That is what the autonomic nervous system relies on -- automatic responses.
Find a description and major functions of the central nervous system and peripheral nervous system?
1 system involves the spine and the brain. this is called the central nervous system.the second system only incolves the spinal chord. peripheral nervous system somatic nervious system and the autonomic nervous system
Why does your head hurt when seeing your period?
What you might be experiencing is Syncope: Which is a brief sudden loss of consciousness or near unconsciousness. A headache or near fainting at the sight of blood results from non-cardiovascular problems with the autonomic nervous system, the autonomic nervous system is responsible for many of our bodily functions, including regulating blood pressure, heart rate, and our responses to anxiety, fear and emotional stress. Vasovagal syncope is typically precipitated by unpleasant physical or emotional stimuli like fright, the sight of blood or pain and often occurs only when the person is standing upright. The feeling of fear or extreme anxiety at the sight of blood is the cause of the fainting.
Is the smooth muscle voluntary or involuntary?
Smooth muscles are involuntary, as are cardiac muscles. Only skeletal muscles are voluntary.
Is the heart the only involuntary muscule?
No. Muscles lining the intestinal tract and blood vessels are other examples of involuntary muscles.
