1. Historical Development Of The Cytology,histology And Embryology

Question 1

When was the first microscope made and by what scientist? Who improved the first microscope and what year? Who made the microscope which is closer to the one we use today?

Answer 1

It was first made in 1590 by Jenson. It was improved by Galileo Galilei in year 1610. The closest microscope to what we use today was developed by Scheiner

Question 2

Who discovered the cell and what year?

Answer 2

Discovered by Robert hook in 1665

Question 3

What are the three important principles of cell theory?

Answer 3

1. Life exists only in the form of cells and therefore an organism consists of cells and cells are the basic unit of life and function.
2. Each cell is derived from another cell
3. There is a mutual connection between cell structure and function.

Question 4

What is histology?

Answer 4

Histology is the study of tissues and microscope structures of the organs. There is general and organ histology.

Question 5

What is embryology? What was first thought of the embryonic development that later changed?

Answer 5

Embryology is the science of the development of an embryo.

At first it was thought that the embryo was grown in a miniature form of their fully developed self. But in fact it is developed in a gradually series of stages.