The glomerular filtration rate (GFR) in a healthy adult is approximately:
A. 125 mL/min
B. 500 mL/min
C. 250 mL/min
D. 50 mL/min
Answer: Option A
Solution (By JKSSB Mock Tests)
Glomerular filtration rate (GFR) is the volume of filtrate formed per minute by both kidneys, normally about 125 mL/min (180 L/day). Nearly 99% of the filtrate is reabsorbed, leaving about 1-2 liters of urine per day. GFR is regulated by the juxtaglomerular apparatus. It's an important clinical indicator of kidney function, estimated from serum creatinine.
Explanation:
Insulin stimulates GLUT4 transporters to move to the cell membrane, increasing glucose uptake in muscle and adipose tissue. Glucagon raises blood glucose.
Explanation:
The gall bladder is a small sac under the liver that stores and concentrates bile produced by the liver, releasing it into the duodenum when needed for fat digestion. The liver makes bile, pancreas produces digestive enzymes, duodenum is the entry point.
Consider statements about human skeleton: 1. The human skull has 22 bones. 2. The femur is the longest bone. 3. Ribs are attached to the sternum directly or indirectly. Which are correct?
Explanation:
The human skull consists of 22 bones (8 cranial and 14 facial). The femur (thigh bone) is the longest and strongest bone in the human body. Humans have 12 pairs of ribs; the first 7 are true ribs (direct attachment), next 3 are false ribs (indirect), and last 2 are floating. All statements are anatomically correct.
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