The kidney is organised into many lobes, organised in a pyramidal structure, where the outer portion is made up of cortex, and the inner portion is made up of the medulla. The kidney contains about 1 million functional units called nephrons, which are continuous with a system of collecting tubules.
What tissue is in the kidney?
Each kidney is held in place by connective tissue, called renal fascia, and is surrounded by a thick layer of adipose tissue, called perirenal fat, which helps to protect it. A tough, fibrous, connective tissue renal capsule closely envelopes each kidney and provides support for the soft tissue that is inside.
What is the basic histological and functional unit of the kidney?
A Nephron. A nephron is the basic structural and functional unit of the kidneys that regulates water and soluble substances in the blood by filtering the blood, reabsorbing what is needed, and excreting the rest as urine. Its function is vital for homeostasis of blood volume, blood pressure, and plasma osmolarity.
What are the three layers of the kidney?
3. The Kidneys Are Composed of Three Main Sections. Each kidney consists of an outer renal cortex, an inner renal medulla, and a renal pelvis.
What histology means?
Listen to pronunciation. (his-TAH-loh-jee) The study of tissues and cells under a microscope.
What are histological features?
Histology, also known as microscopic anatomy or microanatomy, is the branch of biology which studies the microscopic anatomy of biological tissues. Histology is the microscopic counterpart to gross anatomy, which looks at larger structures visible without a microscope.
What is the 4 types of tissue?
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
What types of cells are present in the kidney?
Kidney Cells
Cells of the Kidney.Glomerular Basement Membrane.Glomerular Endothelial Cell Markers.Macula Densa Cell Markers.Mesangial Cell Markers.Parietal Epithelial Cell Markers.Podocyte Markers.Tubule Epithelial Cell Markers.
What cells are kidneys made of?
Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes.
What do collecting ducts do?
The last part of a long, twisting tube that collects urine from the nephrons (cellular structures in the kidney that filter blood and form urine) and moves it into the renal pelvis and ureters. Also called renal collecting tubule.
What are the 7 functions of the kidney?
How Your Kidneys Work
remove waste products from the body.remove drugs from the body.balance the body’s fluids.release hormones that regulate blood pressure.produce an active form of vitamin D that promotes strong, healthy bones.control the production of red blood cells.
What is the name of the outer covering of the kidney?
renal capsule, thin membranous sheath that covers the outer surface of each kidney. The capsule is composed of tough fibres, chiefly collagen and elastin (fibrous proteins), that help to support the kidney mass and protect the vital tissue from injury.
What is the Colour of kidney?
They are bean-shaped and reddish brown in colour. Each kidney is about the size of a clenched fist.
What is medulla in kidney?
Abstract. The mature renal medulla, the inner part of the kidney, consists of the medullary collecting ducts, loops of Henle, vasa recta and the interstitium. The unique spatial arrangement of these components is essential for the regulation of urine concentration and other specialized kidney functions.
What is cortex and medulla?
renal medulla: The inner-most region of the kidney, arranged into pyramid-like structures, that consists of the bulk of nephron structure. renal cortex: The outer region of the kidney, between the renal capsule and the renal medulla, that consists of a space that contains blood vessels that connect to the nephrons.
What is the difference between histology and biopsy?
For most biopsy specimens, this routine processing is all that’s needed. At this point (usually the day after the biopsy was done), the pathologist looks at the tissue under a microscope. Looking at the solid specimens in this way is called histology, which is the study of the structures of cells and tissues.
What are the four types of histology?
The 4 basic tissue types are Epithelium, Connective Tissue, Nervous Tissue, and Muscle Each types contains subtypes that may look different but share similar characteristics.
What is histology in oncology?
Listen to pronunciation. (HIS-tuh-LAH-jik grayd) A description of a tumor based on how abnormal the cancer cells and tissue look under a microscope and how quickly the cancer cells are likely to grow and spread.
