Function of veins Return blood to the heart Veins structure - They have a very wide lumen to maximize blood flow for more effective return- They have a thin wall containing less muscle and elastic fibres as blood is flowing at a very low pressure (5-10 mmHg) - Because the pressure is ...
用Quizlet學習並牢記包含organs of the cardiovascular system、organs of the respiratory system、Organs of the digestive system等詞語及更多內容的單詞卡。
The alveoli have a good air supply from the bronchioles and a rich blood supply. This is vital for successful gaseous exchange because itmaintains a steep concentration gradient for oxygen from the air in the alveoli to the blood, and for carbon dioxide from the blood to the alveoli. Which ...
Fallopian tube, also called oviduct or uterine tube, either of a pair of long narrow ducts located in the human female abdominal cavity that transport male sperm cells to the egg,provide a suitable environment for fertilization, and transport the egg from the ovary, where it is produced, to ...
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normal functions of the body. for example, it can decrease the bodies heart rate without affecting other organs. return the body to normal after a fight or flight episode by restoring blood flow to the skin, abdominal organs, and the genitalia and normal voiding and defecation patterns will re...
the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries-Contraction of the myocardium compresses the coronary arteries and obstructs blood flow-Opening of the aortic semilunar valve during ventricular ___ covers the openings to the ...
Functions to stimulate histamine and pepsinogen secretion as well to increase gastric blood flow Stimulates parietal cells to produce HCl, which denatures proteins and activates digestive enzymes G Cells "Gastrin" cells Cholecystokinin (CCK) A digestive hormone produced and stored in the I cells of ...
blood flowcontrolled by axons of the parasympathetic divisions of ANS parasympathetic neurons within the "sacral" spinal cord-excited by mechanoreceptors or cerebral stimuli-> release ACh, VIP (vasoactive intestinal polypeptide), and NO (nitric oxide)-> cause relaxation of smooth muscle cells -> ...
用Quizlet學習並牢記包含You would teach the mother of a boy with tetralogy of Fallot that if he suddenly becomes cyanotic and dyspneic to a) lie him supine with the head turned to one side. b) lie him prone, being sure he can breathe easily. c) place h