17.8: Endocrine Regulation of Kidney Function
ACE is not a hormone but it is functionally important in regulating systemic blood pressure and kidney function. It is produced in the lungs but binds to the surfaces of endothelial cells in the afferent arterioles and glomerulus. It enzymatically converts inactive angiotensin I into active angiotensin II. ACE is important in raising blood ...
24.3B: Glomerular Filtration - Medicine LibreTexts
Glomerular filtration is the first step in urine formation and constitutes the basic physiologic function of the kidneys. It describes the process of blood filtration in the kidney, in which fluid, ions, glucose, and waste products are removed from the glomerular capillaries.
24.2B: Internal Anatomy of the Kidneys - Medicine LibreTexts
The renal pelvis contains the hilium. The hilum is the concave part of the bean-shape where blood vessels and nerves enter and exit the kidney; it is also the point of exit for the ureters—the urine-bearing tubes that exit the kidney and empty into the urinary bladder. The renal pelvis connects the kidney to the rest of the body.
25.3: Gross Anatomy of the Kidney - Medicine LibreTexts
2022年5月13日 · Ureters, blood vessels, lymph vessels, and nerves enter and leave at the renal hilum. The renal arteries arise directly from the aorta, and the renal veins drain directly into the inferior vena cava. Kidney function is derived from the actions of about 1.3 million nephrons per kidney; these are the “functional units.”
22.2: Overview of the Kidney - Medicine LibreTexts
Ureters, blood vessels, lymph vessels, and nerves enter and leave at the renal hilum. The renal arteries arise directly from the aorta, and the renal veins drain directly into the inferior vena cava. Kidney function is derived from the actions of about 1.3 million nephrons per kidney; these are the “functional units.”
22.3: Microscopic Anatomy of the Kidney - Medicine LibreTexts
2024年10月20日 · The deep medulla of the kidney contains the thin limbs of the nephron loop (simple squamous epithelial tissue) and the collecting ducts (simple cuboidal or columnar epithelial tissue). (Image Credit: "Renal Cortex Histology" and "Renal Medulla Histology" by Jennifer Lange are licensed under CC BY -SA-NC 4.0 , slides provided by the Regents of ...
24.2D: Nephron, Parts, and Histology - Medicine LibreTexts
Its function is vital for homeostasis of blood volume, blood pressure, and plasma osmolarity. It is regulated by the neuroendocrine system by hormones such as antidiuretic hormone, aldosterone, and parathyroid hormone. The basic physiology of a nephron within a kidney: The labels are: 1. Glomerulus, 2. Efferent arteriole, 3.
24.2C: Supply of Blood and Nerves to the Kidneys
renal vein: The veins that drain the kidney and connect the kidney to the inferior vena cava. Because the kidney filters blood, its network of blood vessels is an important component of its structure and function. The arteries, veins, and nerves that supply the …
25.4: Microscopic Anatomy of the Kidney - Medicine LibreTexts
2022年5月13日 · The function of all aquaporins is to allow the movement of water across the lipid-rich, hydrophobic cell membrane (Figure \(\PageIndex{5}\)). Figure \(\PageIndex{5}\): Aquaporin Water Channel. Positive charges inside the channel prevent the leakage of electrolytes across the cell membrane, while allowing water to move due to osmosis.
25.4D: The Role of the Kidneys in Acid-Base Balance
Within the human body, fluids such as blood must be maintained within the narrow range of 7.35 to 7.45, making it slightly alkaline. Outside that range, pH becomes incompatible with life; proteins are denatured and digested, enzymes lose their ability …