Circulatory System Flashcards
What’s the difference between ischemia and hypoxia?
In hypoxia wastes are adequately removed but and ischemia they build up. Ischemia is worse.
If the arterioles constrict in a tissue will material diffuses through the wall of the arterioles into the tissue?
No. All exchange of material between the blood and the tissues must occur and capillaries. the walls of arterioles are too thick and muscular for exchange to occur.
Perfusion
The flow of blood through a tissue
Ischemia
Inadequate blood flow. Results in tissue damage due to shortages of oxygen and nutrients and buildup of metabolic waste.
Hypoxia
When adequate circulation is present but supply of oxygen is reduced.
If the hypothalamic-hypophyseal portal circulation is severed how does this affect the function of the pituitary?
Normally the pituitary receives hormones directly from the hypothalamus. Is a portal system is severed hormones must take a longer route and will be diluted and I regret it before they reach the pituitary. As a result the secretion by pituitary will not be effectively regulated by the hypothalamus.
Which is larger the cardiac output of the right ventricle or of the left ventricle?
Neither they are equal. The same amount of blood must pass through both sides of the heart or blood would back up in either of the pulmonary or systemic circulatory system.
