A Simple Key For anatomy human heart Unveiled
A Simple Key For anatomy human heart Unveiled
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angiotensin II – protein produced by the enzymatic action of ACE on inactive angiotensin I; actively results in vasoconstriction and stimulates aldosterone release by the adrenal cortex.
bicuspid valve – (also, mitral valve or left atrioventricular valve) valve Positioned concerning the remaining atrium and ventricle; contains two flaps of tissue.
ascending aorta – Original portion of the aorta, rising with the remaining ventricle for just a distance of about 5 cm.
cleavage furrow – contractile ring that forms close to a cell through cytokinesis that pinches the cell into two halves.
afterload – force the ventricles must develop to efficiently pump blood towards the resistance in the vessels.
calcaneofibular ligament – intrinsic ligament Positioned on the lateral side on the ankle joint, between the calcaneus bone and lateral malleolus from the fibula; supports the talus bone at the ankle joint and resists excessive inversion of your foot.
depolarise – to lessen the voltage difference between The within and outdoors of a cell’s plasma membrane (the sarcolemma for your muscle mass fibre), creating the inside less damaging than at rest.
counter recent multiplier system – will involve the descending and ascending loops of Henle directing forming urine in opposing Instructions to make a concentration gradient when combined with variable permeability and sodium pumping.
Cells, for example, Have a very cell membrane (also referred to as the plasma membrane) that retains the intracellular atmosphere—the fluids and organelles—individual through the extracellular surroundings. Blood vessels preserve blood inside a shut circulatory program, and nerves and muscles are wrapped in connective tissue sheaths that separate them from encompassing buildings.
Inside the chest and abdomen, a variety of internal membranes preserve key organs like the lungs, heart, and kidneys anatomy human body individual from Some others.
immediate pathway – connections throughout the basal nuclei from the striatum towards the globus pallidus interior segment and substantia nigra pars reticulata that disinhibit the thalamus to boost cortical control of movement.
alveolar duct – tiny tube that qualified prospects within the terminal bronchiole into the respiratory website bronchiole and is particularly The purpose of attachment for alveoli.
coronal suture – joint that unites the frontal bone to the correct and left parietal bones across the top of your cranium.
anterior cruciate ligament – intracapsular ligament in the knee; extends from anterior, excellent surface in the tibia for the inner facet of the lateral condyle on the femur; resists hyperextension of knee.