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Q. Global alteration of brain functioning - Sleep?
Sleep involves a global alteration of brain functioning, and occupies one third of our lives, The transition from waking to sleep is one of the most dramatic natural alterations in consciousness. Sleep is differentiated from waking state by reduction in neuronal responsiveness, inattention to sensory stimuli, and loss of consciousness. These two states differ fundamentally in most physiological parameters including the activity of a variety of key neurotransmitter systems.
Sleep Structure: Electroencephalogram (EEG) recordings reveal the two most basic states of sleep - REM (Rapid Eye Movement) sleep and NREM sleep. NREM comprises of four stages (Stages1 to 4). EEG pattern of wakeful state and different stages of sleep is explained further.
Active wakefulness: It is accompanied by low amplitude, high frequency beta waves. In relaxed wakefulness with eyes closed, the brain emits alpha waves. Alpha waves are low amplitude brain waves of about 8 to 13 cycles per second.
Explain about the Thermoplastic Extrusion? This is a major technique used for vegetable proteins at present. Thermoplastic extrusion leads to dry fibrous and porous granules or
Non-recurrent Type As mentioned earlier it refers to embryo development in reduced embryo sacs. The mechanisms identified for such cases are: Reduced Pseudogamy : The
DIFFERENCE S BETWEEN SINGLE-UNIT AND MULTI-UNIT SMOOTH MUSCLES Single-unit Smooth Muscles Multi-uni t Smooth Muscles
Do the arteries that carry blood from the heart to the lungs have arterial or venous blood? What happens to the blood when it passes through the lungs? Arteries of the pulmonar
EFFECT OF ALCOHOL - 1 . EFFECT ON NERVOUS SYSTEM - Alcohol has an anesthetic effect on nervous system. It affects orientation, alertness, coordination, judgement
Q. What are the problems that vertebrates needed to solve to adapt to the terrestrial environment since they came from the aquatic habitat? How evolution does solve those problems?
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Q. What are the few examples of the structural function of organic molecules? Ans. Organic molecules have a structural function as they are part of cell membranes, organ w
During our discussion of replication origins we took a step-by-step look at the method of cloning DNA fragments into plasmids . Based on your knowledge of this discussion which
Cerebro-spinal Fluid - Formed mainly by choroid plexus and ependyma of ventricles. It comes out of medulla oblongeta by foramen of magandie and lushka . Slightly alkalin
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