Synapse is a term pioneered by Charles S. Sherrington in 1897. It is derived from the Greek word “Synapsis”, which means to conjugate or clasp. The communication between the neurons is through synapses only, which facilitate nerve signal transmission from one to the next cell. A scientist named Sanford Palay observed the ultrastructure of neural …
Nerve impulse refers to the generation of action membrane potential beyond the cell membrane in response to the stimulus. “Nerve impulse conduction” refers to the propagation of nerve impulse that occurs due to a change in membrane potential beyond the cell membrane. When a nerve impulse or action potential reaches the axon terminal, synaptic transmission …
Neurons are the fundamental components of the nervous system that perform a specific task by receiving, conducting, and transmitting the signal or action potential to the other parts of the body. An electrical signal produced by the neurons is called a Nerve impulse that propagates via continuous and saltatory conduction. The term neuron is sometimes …
Sclerenchyma tissue refers to one of the types of ground or simple permanent tissues, which possesses both primary and stiff secondary wall. They exist as rigid woody cell with a compact arrangement. Sclerenchyma tissues aid cell integrity and conduction instead of being a dead cell. During the plant’s secondary, the sclerenchyma cells attain maturity and …
Mitotic division shows a pattern of cell division, where a single cell multiplies into two similar daughter cells by the segregation of newly replicated chromosomes in the nucleus. It is the intermediate phase of the cell division that activates after the G-2 interphase and ends with cytokinesis. Mitosis is a part of the M-phase cell …
The difference between RBC and WBC is mainly due to the following properties like colour, morphology and function. RBC stands for Red blood cell. WBC stands for white blood cell. Colour: The terms (red blood cell and white blood cell) clear the colour difference. The reason behind the red colour of the RBCs is due …
The shoot system of the plant is an outgrowth that originates from the plumule of the seed’s embryo above the ground. The term shoot is generally interchangeable with the term stem, as it constitutes the major part of the shoot system. The morphology and physiology of the shoot system are more complex than the root …
Parenchyma in plants is the types of simple permanent tissue that possesses some ideal properties that discriminate it from the other cells. Cell division: Parenchyma tissues cannot undergo cell division. Vacuole: They comprises a large vacuole. Nature: Structurally and physically, parenchyma is a kind of unspecialised tissue. Modification: Parenchyma modifies itself to perform diverse functions …
The difference between light reaction and the dark reaction is mainly due to the following properties: The demand for light: A light reaction demands a source of light energy for breaking down water into oxygen, while a dark reaction does not need a light source. Site of occurrence: A light reaction occurs within the thylakoid …
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Chlorophyll in plants refers to a pigment molecule that imparts a green colour to the leaves and stems by absorbing a red and blue spectrum of light. The term chlorophyll has originated from the Greek terms “Khloros” (green) and “Phyllon” (leaf). It plays a fundamental role in photosynthesis by allowing plants to absorb light energy …