embryology

Question 1

what are the four cellular processes in embryological development

Answer 1

proliferation differentiation reorganisation apoptosis

Question 2

what is the progression of development in the first 2 months of development

Answer 2

conceptus, morula (inner and outer cells), blastocyst (outer trophectoderm, inner cell mass, fluid filled cavity) at 6 days this emerges from zona pelucida and implants by 10 days bilayer disk forms (hypoblast and epiblasts cells) gastrulination occurs trilaminar embryo forms by 14-18 days

Question 3

what cells are present in the bilayer disk

Answer 3

hypoblast cells epiblast cells

Question 4

when does the trilaminar embryo form and what is it made up of

Answer 4

by 14-18 days ectoderm mesoderm endoderm

Question 5

what forms from the ectoderm

Answer 5

skin and CNS

Question 6

what forms from the mesoderm

Answer 6

muscle blood skeleton heart kidneys

Question 7

what forms from the endoderm

Answer 7

lungs liver gut