Embryology Part 3

Question 1

How many tissue types will embryoblasts form?

Answer 1

3

Question 2

What are Bilaminar, Elonagated, and Trilaminar embryos examples of?

Answer 2

Emobryoblast tissue types

Question 3

What type of embryoblast tissues results in the division of the embryoblast into endoderm and ectoderm?

Answer 3

Bilaminar

Question 4

What makes the embryo symmetrical
Induces formation of neuroectoderm
Forms intervertebral discs?

Answer 4

Notochord

Question 5

In which type of embryoblast tissue is the notochord apart of?

Answer 5

Trilaminar

Question 6

What must be precise, reliable, and reproducible?

Answer 6

Signaling

Question 7

What must coincide with developmental stage and embryonic site?

Answer 7

Signaling

Question 8

What type of network is highly conserved?

Answer 8

Gene regulatory network (GRNs)

Question 9

What is a substance that can specify a cells differentiation pathway as a function of its concentration in the micro environment of the target cell?

Answer 9

Morphogen

Question 10

What is:
Concentration, Duration of exposure, feedback loops, and interactions between target genes
Apart of?

Answer 10

Micro environment

Question 11

What gene is secreted by the notochord?
Organogenesis and limb formation in vertebrates?

Answer 11

Shh gene

Question 12

How can we study the expression in an embryo?

Answer 12

Gene mapping- PCR- look for mRNA

Question 13

What is the outcome of lymphocyte pre-natal development?

Answer 13

Mostly division and apoptosis
Also differentiation and morphological change