Cells of the body mainly use __________ for the selective endocytosis of most macromolecules.
a) receptor-mediated endocytosis
b) diffusion
c) fluid-phase endocytosis
d) pinocytosis
a) receptor-mediated endocytosis
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The lungs are ________ to the heart
A) Lateral B) Medial C) Superficial D) Infraorbital
Which of the following statements concerning water reabsorption is correct?
a. water reabsorption is under control of vasopressin throughout the length of the nephron. b. the ascending limb of the loop of Henle is always impermeable to water. c. vasopressin makes the distal and collecting tubules impermeable to water. d. fifteen percent of the filtered water osmotically follows the absorption of Na+ and other solutes in the proximal tubule. e. water reabsorption is passive in the early portions of the nephron but is active in the distal portions of the nephron.
The larger the cross-sectional area of a type of vessel, the higher the blood pressure.
Answer the following statement true (T) or false (F)
The source of blood carried to capillaries in the myocardium would be the ________.
fossa ovalis coronary veins coronary sinus coronary arteries