Blood capillaries were discovered by _____ in 1661.
- Marcello Malphigi
- William Harvey
- Girolamo Fabrici
- Rene Laennec
The Correct Option is A
Solution and Explanation
To solve the problem, we need to identify the scientist who discovered blood capillaries in 1661.
1. Understanding Historical Contributions:
- Marcello Malpighi (1628–1694): Discovered capillaries, linking arteries to veins using a microscope.
- William Harvey (1578–1657): Discovered circulation of blood, but not capillaries.
- Girolamo Fabrici (1537–1619): Studied valves in veins, not capillaries.
- Rene Laennec (1781–1826): Invented the stethoscope, unrelated to capillaries.
2. Confirming the Correct Answer:
Marcello Malpighi was the first to observe and describe blood capillaries using microscopy, confirming the existence of the blood vessels predicted by William Harvey.
Final Answer:
Blood capillaries were discovered by Marcello Malpighi (Option A).
Top Questions on Blood
- What is the liquid portion that forms after the blood clot?
- Identify the incorrect statements.
(A) Gametocytes of Plasmodium develop in the RBCs.
(B) Ascariasis pathogens are transmitted to a healthy person through the bite by female mosquito vectors.
(C) Entamoeba histolytica is a helminth parasite in the small intestine of humans, causing amoebiasis.
(D) Malarial parasite reproduces asexually in the gut of the mosquito.
(E) Filarial worms reside in the lymphatic vessels of the lower limbs.
Choose the correct answer from the options given below - When one of the parents has ‘A’ blood group and the other parent has ‘O’ blood group, then their child can have _______ blood group.
- As per ABO blood grouping system, the blood group of father is $B^+$ , mother is $A^+$ and child is $O^+$. Their respective genotype can be
A. $I^B i/I^A i/ii$
B. $I^B I^B /I^A I^A /ii$
C. $ I^A I^B /iI^A /I^B i$
D. $I^A i/I^B i/I^A i$
E. $iI^B /iI^A /I^A I^B$
Choose the most appropriate answer from the options given below : - The yellowish straw colored fluid portion that forms after the blood clot is called
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