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Physiology - 3 Questions
The transport maximum for glucose is about 375 mg/min, beyond which it is not fully reabsorbed and begins to appear in the urine.
What is the typical pH of gastric chyme when it enters the duodenum?1) 1.0-2.0 (very acidic)2) 2.0-4.0 (slightly acidic)3) 4.0-6.0 (weakly acidic)4) 6.0-8.0 (slightly alkaline)E) 8.0-10.0 (alkaline)
Gastric chyme, which is the mixture of food and gastric juice, is highly acidic due to the presence of hydrochloric acid secreted by parietal cells. The pH typically ranges from 1.0 to 2.0 when it enters the duodenum. This acidity helps to denature proteins and provides the optimal environment for pepsin activity. Once in the duodenum, the chyme is neutralized by the secretion of bicarbonate from the pancreas and bile from the liver.
What is the primary function of the epididymis in the male reproductive system?1) Storage and maturation of sperm2) Secretion of androgens3) Formation of the spermatozoa4) Fusion of gametes during fertilization
The primary function of the epididymis in the male reproductive system is the storage and maturation of sperm, allowing them to gain motility and the ability to fertilize an egg.
MCQ