Biology

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…

Histamine Definition Histamine is an organic compound found widely in animals and plants that in humans and other mammals is released as part of the…

Gastric Glands Definition Gastric gland is the basic secretory unit of the stomach and contains a variety of component cells located in characteristic locations. It…

Salivary Gland Definition Salivary gland is a gland in terrestrial animals that secretes saliva. In humans, three pairs of large glands, which include the parotid…

Gallbladder Definition Gallbladder is a small, pear-shaped muscular sac in most vertebrates in which bile is stored. The gallbladder is located beneath the liver and…

Basement Membrane Definition Basement membrane is a thin, delicate layer of connective tissue underlying the epithelium of many organs. It is also called basilemma. Basement…

Lymphatic Vessel Definition Lymphatic vessels are any of the vascular channels that transport lymph throughout the lymphatic system and freely anastomose with one another. It…

Lymph Node Definition Lymph nodes (or Lymph gland) are small lumps of tissue that contain white blood cells, which fight infection. They filter lymph fluid,…