In humans, which blood vessels have maximum total cross-sectional area collectively?
Capillaries
Capillaries, despite their individually tiny diameter, have the maximum total cross-sectional area of all blood vessels because there are millions of them branching throughout the body, which also causes blood flow to slow down there for efficient exchange.
The presence of intercalated discs is a diagnostic feature of which tissue?
Nephrons in the kidney primarily help in which of the following?
Consider the following statements regarding diabetes:
1. It is caused by the oversecretion of insulin by pancreas.
2. The glucose level increases in the blood.
3. The patient urinates frequently, loses weight and becomes lethargic.
How many of the statements given above are correct?