Hemorrhoids are:
A) enlarged anal lymph nodes.
B) infected anal sinuses.
C) varicosities in rectal/anal veins.
D) infected and enlarged anal mucus glands.
E) arteriovenous malformations in the anal mucosa.
Ans: C
You might also like to view...
Matching
A) Slow (oxidative), fatigue-resistant fibers B) Fast (oxidative or glycolytic), fatigable fibers C) Fast (oxidative or glycolytic), fatigable fibers 11) Depends on oxygen delivery and aerobic mechanisms. 12) Have very fast-acting myosin ATPases and depend upon anaerobic metabolism during contraction. 13) Red fibers, the smallest of the fiber types. 14) Contain abundant amounts of glycogen. 15) Abundant in muscles used to maintain posture. 16) A relatively high percentage are found in successful marathon runners.
Net movement of solute across an epithelium that is permeable to water is always accompanied by movement of water in the opposite direction
Indicate whether the statement is true or false.
What principle causes the exchange of oxygen and carbon dioxide between the capillaries and the alveoli?
A. Diffusion B. Absorption C. Secretion D. Active transport E. Filtration
Excretion
a. is the removal of substances that were filtered at the glomerulus or secreted but not reabsorbed. b. is the process by which a substance moves from the peritubular capillary blood to the tubular fluid. c. conserves substances that are important to the body. d. occurs by active transport of substances into the urinary bladder. e. is controlled by sympathetic activity.