baroreceptor reflex – autonomic reflex through which the cardiac centres observe alerts from your baroreceptor stretch receptors and regulate heart operate based on blood movement.
diffusion – motion of a compound from an area of greater focus to 1 of lessen focus.
atrioventricular bundle branches – (also, still left or appropriate bundle branches) specialised myocardial conductile cells that occur within the bifurcation on the atrioventricular bundle and go through the interventricular septum; bring on the Purkinje fibres and also to the ideal papillary muscle mass by means of the moderator band.
angiotensinogen – inactive protein while in the circulation produced by the liver; precursor of angiotensin I; must be modified by the enzymes renin and ACE to get activated.
aorta – major artery during the body, originating with the remaining ventricle and descending to your abdominal location where it bifurcates in the widespread iliac arteries at the extent of the fourth lumbar vertebra; arteries originating in the aorta distribute blood to virtually all tissues from the body.
cardiac output (CO) – volume of blood pumped by Each individual ventricle in the course of a single moment; equals HR multiplied by SV.
anterior tibial artery – branches in the popliteal artery; provides blood on the anterior tibial region; becomes the human anatomy and physiology definition dorsalis pedis artery.
chemical synapse – link in between two neurons, or in between a neuron and its goal, exactly where a neurotransmitter diffuses throughout a really limited length.
aortic arch – arc that connects the ascending aorta for the descending aorta; finishes in the intervertebral disk concerning the fourth and fifth thoracic vertebrae.
The connection of your ribs towards the breastbone—the sternum—is in all cases a secondary one particular, introduced about because of the reasonably pliable rib (costal) cartilages. The modest joints in between the ribs along with the vertebrae permit a gliding movement in the ribs about the vertebrae through respiratory as well as other functions. The movement is restricted by the ligamentous attachments among ribs and vertebrae.
course switching – capacity of B cells to change the course of antibody they generate with out altering the get more info specificity for antigen.
cardiogenic shock – type of shock that results from the inability from the heart to keep up cardiac output.
coronal suture – joint that unites the frontal bone to the ideal and remaining parietal bones through the top rated with the cranium.
articular cartilage – thin layer of cartilage covering an epiphysis; minimizes friction and functions as a shock absorber.