The serous membrane of the lungs is called the ________
A) pericardium
B) pleura
C) peritoneum
D) periosteum
B
Explanation:
A) The pericardium surrounds the heart.
C) The peritoneum surrounds the digestive organs.
D) The periosteum is the layer of connective tissue that surrounds bones.
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Thin filaments are mostly made of the protein
A) actin. B) titin. C) myosin. D) tropomyosin. E) nebulin.
The vast majority of the filtered fluid is reabsorbed
Indicate whether the statement is true or false
The nerve that innervates the hamstring muscles and posterior leg muscles is the
A) common fibular nerve. B) femoral nerve. C) obturator nerve. D) tibial nerve. E) coccygeal plexus.
Think about the bilayer arrangement of phospholipids in cell membranes. Now imagine if extracellular and intracellular fluids were made of oil instead of water. How would the phospholipids arrange themselves?
A. The hydrophilic heads would be oriented toward the middle, with hydrophobic tails pointing outward. B. The hydrophobic tails would be oriented inward, while the hydrophilic heads would point outward. C. The hydrophobic heads would be oriented toward the oil, so outward; the hydrophilic tails would be pointed inward.