The function of the left ventricle (LV) is to pump oxygen- and nutrient-rich blood through the large arteries (macrocirculation) of the systemic arterial tree to the arterioles and capillaries (microcirculation) to meet the metabolic requirements of surrounding tissues. The walls of arteries are ...
Beyond that fixed anatomical configuration, the blood vessels are subject to local vasoregulatory signals, so that both nutrient provision and mass uptake can be variable. All of these aspects of renal function have been the subjects of mathematical models. The most thoroughly investigated area has ...
The function of the left ventricle (LV) is to pump oxygen- and nutrient-rich blood through the large arteries (macrocirculation) of the systemic arterial tree to the arterioles and capillaries (microcirculation) to meet the metabolic requirements of surrounding tissues. The walls of arteries are ...
Around this, there is a layer of vascular smooth muscle, which is highly developed in arteries. Finally, there is a further layer of connective tissue known as the adventitia, which contains nerves that supply the muscular layer, as well as nutrient capillaries in the larger blood vessels. Blo...
A considerably more detailed review of this aspect of testis function is provided in Chapter 17. The vascular supply to the testis arises from the abdominal aorta and, in species with scrotal testes, this results in a comparatively long and highly coiled spermatic artery that is particularly ...
It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and contracts) 100,000 times per day, pumping 5 or 6 quarts of blood each minute, or about 2,000 gallons per day. So how does blood flow through the heart...
It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and contracts) 100,000 times per day, pumping 5 or 6 quarts of blood each minute, or about 2,000 gallons per day. So how doesblood flow through the heart?
Functions of the Blood Vessels Arteries carry oxygenated and nutrient-rich blood to the body’s tissues from the heart. Dilatation and constriction of the arteries can alter blood pressure and cardiac output. Veins carry deoxygenated blood and wastes from the tissues to the liver and heart. The ...
Multiple placental cell types engage in highly varied functions, from attachment, invasion, and vascular remodeling to cell fusion, hormone production, and nutrient transport. • Multiple mechanisms allow transport of waste and nutrients across the placenta, including diffusion, transporter protein-mediate...
Active transport of substrates across the MVM into the enterocyte is usually against a concentration gradient and energy must be expended to drive the process (seeFigure 57-6). Usually the uptake of the nutrient is linked to the entry of sodium down its electrochemical gradient, with energy expe...