arachnoid mater – middle layer with the meninges named with the spider-World-wide-web–like trabeculae that reach between it as well as the pia mater.
bicuspid valve – (also, mitral valve or remaining atrioventricular valve) valve Situated involving the remaining atrium and ventricle; is made up of two flaps of tissue.
To be aware of the complete buildings and working technique of this system it's important to understand the anatomy and physiology.
hypertension – pressure exerted via the blood versus the wall of a vessel or heart chamber; may be described Using the more generic expression hydrostatic pressure.
abdominal aorta – part of the aorta inferior to your aortic hiatus and superior towards the frequent iliac arteries.
cauda equina – bundle of spinal nerve roots that descend within the decrease spinal twine down below the 1st lumbar vertebra and lie in the vertebral cavity; has the appearance of the horse’s tail.
central chemoreceptor – one of many specialised receptors that can be found from the brain that feeling improvements in hydrogen ion, oxygen, or carbon dioxide concentrations inside the brain.
cytoskeleton – “skeleton” of a cell; shaped by rod-like proteins that guidance the mobile’s condition and supply, amongst other capabilities, locomotive abilities.
bilirubin – yellowish bile pigment made when iron is faraway from haem as well as the remaining molecule is further broken down into squander products.
Marathon Runners Runners exhibit two properties of residing humans—responsiveness and motion. Anatomic constructions and physiological procedures allow runners to coordinate the motion of muscle groups and sweat in response to rising interior body temperature. (credit here rating: Phil Roeder/flickr)
acromion – flattened bony procedure that extends laterally through the scapular backbone to sort the bony suggestion with the shoulder.
capillary – smallest of blood vessels where physical exchange happens between the blood and tissue cells surrounded by interstitial fluid.
clavicle – collarbone; elongated bone that articulates Along with the manubrium with the sternum medially and also the acromion from the scapula laterally.
absolute refractory time period – time in the course of an action period when another motion probable can't be produced because check here the voltage-gated Na+ channel is inactivated.