Adipose Tissue: What Is It, Location, Function | Osmosis
Dec 4, 2023 · Adipose tissue is a specialized type of connective tissue that arises from the differentiation of mesenchymal stem cells into adipocytes during fetal development. Mesenchymal stem cells are pluripotent cells that can transform into various cell types, including fat cells , bone cells, cartilage cells, and muscle cells, among others.
Glandular Epithelium: What Is It, Location - Osmosis
Jan 3, 2024 · Glandular epithelium is an epithelial tissue involved in the production and release of different secretory products (e.g., sweat, saliva, mucus, digestive enzymes, hormones). It is arranged into structures known as glands, which can be a single secretory cell (e.g., goblet cells) or a group of secretory cells (e.g., salivary glands). In turn ...
Basement Membrane: What Is It, How It’s Formed | Osmosis
Sep 14, 2022 · The basement membrane, also known as basal lamina, is a thin, dense layer of extracellular matrix that lines most human tissues forming the supporting structure and scaffolding for epithelial tissue and separates different types of cells, such as nerve cells and muscle cells. The basement membrane plays an important role in maintenance of ...
Mammary gland histology: Video, Causes, & Meaning - Osmosis
Summary. Mammary glands are organs that produce milk for nursing infants. The mammary gland is composed of lobules, which are clusters of cells that produce milk, and ducts, which are the channels that transport the milk to the nipples. The lobules and ducts are surrounded by a layer of adipose tissue, which provides insulation and helps ...
Epithelial Tissue: What Is It, Where It’s Found | Osmosis
Feb 4, 2022 · Intraepithelial cells are those located between surface epithelium, while extraepithelial cells are located under the surface epithelium. There are two types of intraepithelial glands: goblet cells and secretory epithelium. Goblet cells are singular epithelial cells that often appear as a tube with a large vacuole full of mucus. In contrast ...
Epicardium: What Is It, Functions, and More | Osmosis
Jan 19, 2022 · The epicardium, or the innermost layer of the pericardium, is the outermost layer of the heart itself. It is composed of mesothelial cells, fat, and connective tissue. It is adjacent to the myocardium, the middle muscular layer. The innermost layer is referred to as the endocardium. The epicardium comprises part of the pericardium, forming the ...
Macrophages: What Are They, Different Types | Osmosis
Jul 14, 2022 · Kupffer cells scavenge the liver for potential pathogens that could have entered the bloodstream from the gastrointestinal tract. They also play a role in maintaining iron levels and have a function in bilirubin metabolism. If the liver is injured, Kupffer cells secrete anti-inflammatory cytokines (e.g., Interleukin [IL]-10, IL-4, and IL-13 ...
Hyperplasia and hypertrophy: Video, Causes, & Meaning - Osmosis
Hyperplasia and hypertrophy are two ways that the size of cells can increase. Hyperplasia is an increase in the number of cells, while hypertrophy is an increase in the size of cells. During hypertrophy, the cells enlarge as they fill with more cytoplasm. This can lead to an increase in the strength or function of the tissue.
Breast cancer: Video, Causes, & Meaning | Osmosis
Breast cancer, or breast carcinoma, is an uncontrolled growth of epithelial cells within the breast. It’s the second most common cancer in women, but can also, on rare occasion, affect men as well. Breast cancer is also the second leading cause of cancer deaths in women after lung cancer. This is largely due to the fact that oftentimes breast ...
Necrosis and apoptosis: Video, Causes, & Meaning | Osmosis
Apoptosis, on the other hand, is a programmed cell death that occurs when the bodyneeds to get rid of damaged or unnecessary cells. Apoptosis occurs due to intrinsic and extrinsic pathways. With apoptosis, white blood cells come in and clean up the dead tissue, so this is a neat way for cells to die. Company. About us.