Chapter 8 -limb growth and dvp

Question 1

Week 5

Answer 1

arm and leg buds
Face dvp
Gut dvp
Embryo in chorionic cavity
Umbelical ring
Optic cup and lens placode
Branchial arches and clefts

Question 2

How does the limb develop?

Answer 2

Limb buds has a mesenchymal core (made of parietal layer from Laterl plate mesoderm) forming bones and connective tissue of limb
Forelimb first, then hindlimb dvp

Question 3

Where does the limb grow from?

Answer 3

Cells go from AER and differentiate into cartilage and muscle - Proximo-distally

Question 4

What cell type does limb grow from?

Answer 4

Mesenchyme in the buds condense to form chondrocytes

Question 5

What cells makes hyaline cartilage?

Answer 5

Chondrocyte

Question 6

What is the name for bone development areas

Answer 6

Diaphysis-center ossification

Epiphyses-cartilaginous

Question 7

What layer do endochondral ossification derive from?

Answer 7

Parital layer of the Lateral plate mesoderm

Question 8

origins for cervical region

Answer 8

Scalen geniogyoid prevertabral - Pri

Infrahyoid -abxial

Question 9

origins

For Thoracoabodminal

Answer 9

Intercostal=prim

everything in thoracic area is abxial

Question 10

Upper limb origins

Answer 10

Rhomboids,levators and latissimus -prim

Distal limb muscles -abxial

Question 11

Lower limb origins

Answer 11

Lower limbs muscles

Question 12

What makes up the intermaxillary segment form?

Answer 12

1. philtrum
2. Upper jaw w/incisor
3. Palatal component (triangular primary palate)

Question 13

Merging of what forms the intermaxillary segment?

Answer 13

Two medial nasal prominences

Question 14

Intraembryonic mesoderms layer

Answer 14

Paraxial - somitomeres,etc
Intermediate-urogenital
Lateral-body cavity

Question 15

What layer does the digestive system arise from

Answer 15

Endoderm

Question 16

What does the endodermally lined gut tube bound

Answer 16

Cranially the Oropharyngeal membrane and caudally cloacal membrane

Question 17

What is the gut divided into

Answer 17

Fore-mid-hind-GUT

Question 18

What does the midgut come from

Answer 18

Yolksac

Question 19

What does the intestinal tract pass through?

Answer 19

Epithelial proli - Biochem maturat and Cellular different -

EBC

Question 20

What are the stages of Lung development

Answer 20

Embryonic
Pseudo-Glandular
Canalicular
Terminal
Post-Natal

Question 21

What structures do the lungs grom into

Answer 21

Pleural canals - Which connects the thoracic and abdominal region (Thats what the septum transversum divides the coelem into)

Question 22

What does the diaphragm form from?

Answer 22

Mesenchym ingrowth (muscular somites components from c3-c-5 )
Pleuroperitoneal membrane
Septum transv.

Question 23

What function do mesenteries have?

Answer 23

provide pathways for vessels nerves and lymphatics to organs

Question 24

Thoracic cavity divide into:

Answer 24

Pericardal and 2pleural cavity

Question 25

What passes through the primitive umbelical ring

Answer 25

Connecting stalk (2art-1veint)
Yolk stalk
Canal

Question 26

What does the amnion give rise to

Answer 26

Connecting stalk

yolk stalk

Question 27

What structures form the cornea

Answer 27

Surface ectoderm
Stroma
Epithelial layer

Question 28

What are pharyngeal arches made of

Answer 28

Mesynchymal tissue