Cat Dissection Structures Essay

Healthy kidneys make internal secretions such as renin and angiotensin. These horm nonpargonils regulate how much sodium (salt) and fluid the dead body keeps, and how well the tune vessels can expand and contract. This, in turn, helps control business line pressure. They do this by correct The amount of water in the body. If there is withal much water in the body (fluid overload) telephone line pressure will go up. If there is alike little water in the body (dehydration) the stock pressure will drop. The width of the arteries. The arteries constantly potpourri in width as blood flows by dint of and through them.The narrower the arteries, the higher the blood pressure. Renin helps control narrowing of the arteries. helplessness kidneys often make too much renin. This raises blood pressure. If your blood pressure is high, your heart is working harder than frequent to pump blood through your body. High blood pressure (also c alled hypertension) caused by a breakdown in the se functions is common in people with kidney failure. It is also a complication, a secondary condition caused by kidney failure. erythrocyte production? o The urinary system controls scarlet blood cell production by secreting the hormone erythropoietin. . What structures enter or exceed at the hilus of the kidney? Ureters, nephritic blood vessels, lymphatics, and nerves enter and exit at the hilumKnow the anatomy of the kidney so that you could recognize the following parts from a rendering or on a diagram capsule, hilum, nephritic artery, renal vein, ureter, cortex, medulla, papillae, renal columns, minor and major calyces, renal pelvis. The Kidney is bean-shaped and dictated in the lumbar region of the body. The kidney is draw as being Retroperitoneal-that is, it is located between the abaxial body wall nd the parietal peritoneum. 1. An fair human kidney weighs about 5 ounces. 2. Sitting on top of each kidney is a single adrenal gland that essentially has no influence o n the kidney. B. The Renal Hilum-vertical cleft on the medial stand up of the kidney, that leads into an internal space within the kidney cognise as the Renal Sinus. 1. The ureter, the renal blood vessels, lymphatics and nerves all join each other at the hilum and occupy the renal sinus. C. There are deuce-ace Layers of Support Tissue Surrounding each kidney. The layers are 1.The Fibrous Capsule-a capsule-like layer that prevents infections in surrounding regions from dispersion to the kidney. 2. The Perirenal Fat Capsule-a thick layer of adipose thread that attaches the kidney to the posterior body wall and cushions it against blows. 3. The Renal Fascia-an out layer of fibrous connective tissue that anchors the kidney and adrenal glands to surrounding tissues. Three Distinct Internal Segments in the Human Kidney 1. The Renal Cortex-light colo wild, superficial region of the kidney. This state has a granular appearance. . The Renal Medulla-a dark red or brown colored region in the kidney. The medulla contains cone-shaped areas known as the medullary or Renal Pyramids. a. The base of each profit faces towards the cortex and the apex (Papilla) points internally. b. The pyramids contain bundles of microscopic pee-collecting tubules and capillaries. Structures known as the Renal Columns separate the pyramids from each other. c. all(prenominal) pyramid and its surrounding tissue makes up one of eight lobes of a kidney. 3. The Renal Pelvis-a funnel-shaped tube that is day-and-night with the ureter leaving he hilum. a. severaliseing extensions of the Pelvis cause two or three Major Calyces, each of which subdivides to form several Minor Calyces. b. The Minor Calyces are cup-shaped areas that enclose the papillae of the pyramids. 1) The calyces collect urine, which drains from the papillae, and empty into the renal pelvis. The urine then flows through the renal pelvis and into the ureter which moves it to the bladder where it is stored. 2) Smooth muscle lines the walls of the calyces, the pelvis and the ureter. Urine is pushed through these areas via peristalsis.In what part of the kidney are most of the nephrons located? Renal Cortex 4. Blood supply of the kidney Branch of aorta that enters kidney is the renal artery, which divides several times as it moves toward the cortex. At the base of the renal pyramids, the arcuate arteries branch into interlobular arteries that branch into afferent arterioles that deliver blood to the glomerulus. The corticoefferent arterioles exit the glomerulus and give rise to the peritubular and vasa recta capillaries surrounding the renal tubule. Secretion and reabsorption occurs between the tubule and bloodstream in these capillaries.