Ebryology 2

Question 1

what happens in week 3

Answer 1

gastrulation
neurulation
development of somites
early development of cardiovascular system

Question 2

what does gastrulation mean

Answer 2

formation of germ layers

Question 3

what does neurulation mean

Answer 3

formation of the neural tube

Question 4

what is the function of the notochord

Answer 4

secretes signals that influences cells around it this cause the neuralplate to form

Question 5

what does the neural plate sink down to form

Answer 5

the neural tube

Question 6

what will the neural tube eventually develop into

Answer 6

the CNS

Question 7

what germ does the neural tube induce to thicken

Answer 7

mesoderm

Question 8

how many blocks does the mesoderm divide into

Answer 8

3

Question 9

what are the three separate parts that the mesoderm divides into called

Answer 9

paraxial mesoderm
intermediate mesoderm
lateral plate mesoderm

Question 10

what are the 2 layers that the lateral plate mesoderm splits to form

Answer 10

somatic mesoderm

splanchnic mesoderm

Question 11

what does the paraxial mesoderm go on to form

Answer 11

somites

Question 12

what does the intermediate plate mesoderm form

Answer 12

urogenital system (kidneys and reproductive)

Question 13

what does the lateral plate mesoderm go on to form

Answer 13

body cavity and coverings

Question 14

each somite (paraxial mesoderm) will eventually divide into 3 more layers what are these

Answer 14

dermatome
myotome
sclerotome

Question 15

what is the dermatome

Answer 15

dermis of the skin

Question 16

what is the myotome

Answer 16

the muscles

Question 17

what is the sclerotome

Answer 17

bones including vertebrae

Question 18

what is teratology

Answer 18

study of when things go wrong during development

Question 19

during pregnancy what weeks pose the biggest risk of teratogens

Answer 19

weeks 3-8

Question 20

what is Rubella

Answer 20

viral infection that used to be common in children. It’s usually a mild condition that gets better without treatment in 7 to 10 days.

Question 21

what does chronic villus sampling test examine

Answer 21

allows examination of the fetal karyotype and /or genotype

Question 22

what are common postnatal tests to check for malformations

Answer 22

hip stability
testes(descent)
fingers toes
hearing