The fluid that reduces friction during breathing in the pleural cavity is:
A. Synovial fluid
B. Lymph
C. Pleural fluid
D. Cerebrospinal fluid
Answer: Option C
Solution (By JKExamLibrary)
The pleural cavity between the visceral and parietal pleura contains a thin layer of pleural fluid, lubricating the surfaces to reduce friction during lung expansion and contraction. Synovial fluid is in joints, cerebrospinal fluid surrounds the CNS, lymph is in the lymphatic system. Pleural effusion is excess accumulation.
Explanation:
Glucose produced during photosynthesis is often polymerized into starch (a polysaccharide) for storage in chloroplasts or amyloplasts. This is an anabolic polymerization process. Photosynthesis produces glucose, respiration breaks it down, translocation is transport of solutes. Starch is a reserve carbohydrate.
Explanation:
Certain high-risk strains of HPV are a major cause of cervical cancer. Vaccines are available. TB is bacterial, malaria protozoan, cholera bacterial.
Explanation:
Pepsin is a protease secreted by chief cells in the stomach as inactive pepsinogen, activated by HCl. It breaks proteins into peptides. Ptyalin is salivary amylase, trypsin is a pancreatic protease, lipase digests fats.
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