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Q. What is the neuromuscular synapse?
Neuromuscular synapse is the structure through which the neural impulse passes from the axon of a motor neuron to the muscle cell. This structure is also called as neuromuscular junction or motor end plate. As in the nervous synapse the axonal terminal membrane releases the neurotransmitter acetylcholine in the cleft between the two cells. Acetylcholine binds to specific receptors of the muscle membrane dependent sodium channels then depolarization and the open of the muscle membrane begins and the impulse is then transmitted to the sarcoplasmic reticulum that releases calcium ions into the sarcomeres of the myofibrils thus triggering contraction.
Q. Cnidarians and Poriferans do not have excretory systems. Do platyhelminthes have an excretory system? Platyhelminthes have a primitive excretory system made of flame cells
Q. Write the meaning of Gestational Diabetes Mellitus? Gestational Diabetes Mellitus (GDM) is defined as glucose intolerance of any severity that has its onset or is first reco
Evolutionary changes that occurred in humans are - Development of prominent chin. Increase in cranial capacity. Reduction of brow-ridges. Development of speech. Developme
Species could be divided into which categories?
give the theory of spermatogenesis
The cell membrane is produced of lipids, proteins and carbohydrates. The membrane lipids are phospholipids, a particular type of lipid to which one extremity a phosphate group i
Advantages and Disadvantage of using Turbidity Measurement? Advantages 1. It is an easy, rapid and sensitive technique. 2. Turbidity measurement can be done without destr
Biology once said why this statement is logical in terms of kin selection and use the coefficient of relatedness he'd be willing to lay down his life to save two brothers or eight
Identical Twins Human twins may be similar, when they are formed from one egg (monozygotic) or fraternal while they are the result of fertilization of two different ova releas
Types of xerophytes On the basis of their mbrphology, physiology and life cycle pattern, xerophytes are generally classified into the following three categories: a) Ephem
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