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Protons of an atom are found only?
Protons of an atom are found only in its nucleus.
What are the elements only found in protein?
The elements found only in proteins are carbon, hydrogen, oxygen, and nitrogen. These elements are essential for the structure and function of proteins, which are key molecules in the body for growth, repair, and maintenance.
Are mitochondria and chloroplasts both found in all eukaryotic Cells?
No, both mitochondria and chloroplasts are not found in all eukaryotic cells. Mitochondria are found in all eukaryotic cells as the powerhouse of the cell, producing energy through cellular respiration. Chloroplasts, however, are only found in plant cells and some protists, where they perform photosynthesis to produce energy from sunlight.
Where can mendelevium be found in the world?
Mendelevium can be found only in rare specialized laboratories.
What metal is found naturally as an element?
Gold, silver, copper, iron, lead, mercury.
Why the release of acetylcholine at the neuromuscular junction is not considered a hormonal event?
The release of acetylcholine at the neuromuscular junction is not considered a hormonal event because it involves the transmission of a neurotransmitter (acetylcholine) between nerve cells and muscle cells, which occurs locally and rapidly. Hormones are typically produced by endocrine glands, circulated through the bloodstream, and have slower and longer-lasting effects on target cells throughout the body.
Does each skeletal muscle fiber has one neuromuscular junction?
Yes, each skeletal muscle fiber has one neuromuscular junction (NMJ) where a motor neuron connects to the muscle fiber. This junction is the site where the motor neuron releases neurotransmitters, specifically acetylcholine, to stimulate muscle contraction. While a single motor neuron can innervate multiple muscle fibers, each individual muscle fiber receives input from only one motor neuron at its NMJ.
Are monoamines the only neurotransmitters found between motor neurons and voluntary muscles?
No, that would be Acetylcholine
Skeletal muscle fiber is controlled by a motor neuron at a single?
Each muscle cell is only innervated by a single motor neuron, but each motor neuron innervates any number of muscle cells. When an action potential travels down the axon of an alpha motor neuron, it will depolarize several muscle cells at the same time, a phenomenon known as summation.
Does atropine block only nicotinic receptors?
Atropine does not only block nicotinic receptors but also acetylcholine at muscarinic receptors
Does parasympathetic nerves secrete norepinephrine?
No. They secrete acetylcholine only.
Is acetylcholine the only neurotransmitter in motor division of somatic nervous system?
yes
Which neuro transmitter released from ganglionic of the parasympathetic division?
Nor-adrenaline is secreted at post ganglionic sympathetic synapses. There is re-uptake of Nor-adrenaline by nerve ending and only partially destroyed there by the enzyme C.O.M.T. There is no enzyme like acetylcholinesterase present there as in post ganglionic parasympathetic synapse to destroy the acetylcholine.
Why does acetylcholine causes vaso-dilation?
In some muscle tissue acetylcholine causes vaso-dilation, but not all. Norepinephrine is the opposite competor/effector of acetylcholine. Acetylcholine is present in all preganglionic fibers, both parasympathetic and sympathetic. Acetylcholine is present in postganglionic parasympatic fibers, where norepinephrine is present in the postganglionic sympathetic fibers. In some tissues acetylcholine causes constriction. Can also reduce heart rate vi the vagus nerve. Acetylcholine is the only neurotransmitter used in the somatic nervous system! Acetylcholine can effect vasodilation by several mechanisms, including activation of endothelial nitric oxide (NO) synthase and prostaglandin (PG) production. In human skin, exogenous Acetylcholine increases both skin blood flow and bioavailable NO levels, but the relative increase is much greater in skin blood flow than NO. So this may lead us to speculate that acetylcholine may dilate cutaneous blood vessels through PGs, as well as NO. In some muscle tissue acetylcholine causes vaso-dilation, but not all. Norepinephrine is the opposite competor/effector of acetylcholine. Acetylcholine is present in all preganglionic fibers, both parasympathetic and sympathetic. Acetylcholine is present in postganglionic parasympatic fibers, where norepinephrine is present in the postganglionic sympathetic fibers. In some tissues acetylcholine causes constriction. Can also reduce heart rate vi the vagus nerve. Acetylcholine is the only neurotransmitter used in the somatic nervous system! Acetylcholine can effect vasodilation by several mechanisms, including activation of endothelial nitric oxide (NO) synthase and prostaglandin (PG) production. In human skin, exogenous Acetylcholine increases both skin blood flow and bioavailable NO levels, but the relative increase is much greater in skin blood flow than NO. So this may lead us to speculate that acetylcholine may dilate cutaneous blood vessels through PGs, as well as NO.
What is the junction resistance of pn junction diode?
The resistance of a forward biased pn junction is zero.
Is there a winter storm warning for grand junction?
No, only in the surrounding mountains, where several feet of snow will fall. Grand Junction will see only rain.
What is the role of acetylcholinesterase?
Acetylcholinesterase is an enzyme that breaks down the neurotransmitter acetylcholine into choline and acetate. This breakdown is essential for terminating the signal transmission at cholinergic synapses and preventing excessive stimulation of the postsynaptic receptors.
