Biology

Vertebral Artery Definition Vertebral artery is one of the main arteries at the base of the neck and is the first branch of the subclavian…

Auditory Cortex Definition Auditory cortex is the section of the brain that processes information received through hearing. It is also called auditory area. It is…

Lateral Sulcus Definition Lateral sulcus is one of the group of sulci and a most prominent brain section. It first arises around the 14th gestational…

Prefrontal Cortex Definition Prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe. It is often called the ‘brain…

Cell Envelope Definition Cell envelope is a combination of the cell membrane, cell wall, and an outer membrane if it is present. Usually, this envelope…

Lipid Bilayer Definition Lipid bilayer is a two-layered arrangement of phosphate and lipid molecules that form a cell membrane, the hydrophobic lipid ends facing inward…

Acetylcholine Definition Acetylcholine is a substance that is released at the junction between neurons and skeletal muscle fibers, at the nerve endings of the parasympathetic…

Lipids Srtucture, Properties and Function Lipid – Lipids are biological molecules that are insoluble in water, but are soluble in non-polar solvents, meaning that they…

About Lipid Definition Lipids are any of a large group of organic compounds that are oily to the touch and insoluble in water. Lipids include…

Goblet Cell Definition Goblet cells are any of the specialized epithelial cells, such as those found in the mucous membrane of the stomach, intestines, and…

Plastid Definition Plastid is an organelle found in the cells of plants, green algae, red algae, and certain other protists. Like mitochondria, plastids have an…

Neurotransmitter Definition Neurotransmitter is a chemical substance that is produced and secreted by a neuron and then diffuses across a synapse to cause excitation or…