The Single Best Strategy To Use For human anatomy and physiology definition

Catabolism is the method by which greater a lot more complex substances are broken down into smaller easier molecules. Catabolism releases Electrical power. The elaborate molecules found in foods are broken down so the body can use their components to assemble the buildings and substances wanted for life.

amino acid – a protein’s monomer; has a central carbon or alpha carbon to which an amino group, a carboxyl group, a hydrogen, and an R team or facet chain is connected; the R group differs for all twenty typical amino acids.

carotid canal – zig-zag tunnel furnishing passage through the foundation from the skull for The inner carotid artery into the brain; begins anteromedial for the styloid system and terminates in the center cranial cavity, close to the posterior-lateral foundation from the sella turcica.

motion prospective – change in voltage of the cell membrane in response into a stimulus that ends in transmission of the electrical sign; special to neurons and muscle fibres.

axillary artery – continuation in the subclavian artery mainly because it penetrates the body wall and enters the axillary area; supplies blood into the area near The top on the humerus (humeral circumflex arteries); many the read more vessel proceeds into the brachium and gets to be the brachial artery.

cauda equina – bundle of spinal nerve roots that descend from your decrease spinal wire underneath the initial lumbar vertebra and lie throughout the vertebral cavity; has the looks of the horse’s tail.

calyces – cup-like buildings obtaining urine in the collecting ducts in which it passes on on the renal pelvis and ureter.

counter recent multiplier method – consists of the descending and ascending loops of Henle directing forming urine in opposing directions to make a concentration gradient when coupled with variable permeability and sodium pumping.

atrial natriuretic peptide (ANP) – peptide hormone produced by the partitions of your atria in response to large hypertension, blood volume, or blood sodium that lessens the reabsorption of sodium and drinking water during the kidneys and encourages vasodilation.

dihydroxyvitamin D – Lively method of vitamin D required via the intestinal epithelial cells to the absorption of calcium.

axon section – single extend of your axon insulated by myelin and bounded by nodes of Ranvier at both stop (aside from the first, that's after the Original section, and the final, that's followed by the axon terminal).

dorsal arch – (also, arcuate arch) formed from the anastomosis of your dorsalis pedis artery and medial and plantar arteries; branches get more info offer the distal parts with the foot and digits.

bulbourethral glands – (also, Cowper’s glands) glands that secrete a lubricating mucus that cleans and lubricates the urethra prior to And through ejaculation.

corona radiata – in an oocyte, a layer of granulosa cells that surrounds the oocyte Which have to be penetrated by sperm just before fertilisation can manifest.

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