Development and gross organisation of the vascular system L10

Question 1

which artery does the 1st arch form

Answer 1

begins to form part of the maxillary artery

Question 2

which arteries does the 3rd arch form

Answer 2

common carotid, first pair internal carotid and external carotid

Question 3

which arteries does the 4th arch form

Answer 3

aortic arch on left and part of subclavian on right

Question 4

6th arch forms

Answer 4

part of right pulmonary artery, left pulmonary artery and ductus arteriousis
dorsal aorta and reminder of internal carotid

Question 5

7th arch forms

Answer 5

subclavian/ brachial artery

Question 6

when does the heart begin to develop

Answer 6

day 18

Question 7

what does the heart develop from

Answer 7

mesoderm cells called cardiogenic area

Question 8

what are the tubes the heart first develops as called

Answer 8

endocardial tubes

Question 9

5 regions of the primitive heart

Answer 9

truncus arteriosus 
bulbus cordis 
primitive ventricle 
primitive atrium 
sinus venous

Question 10

truncus arteriosus—>

Answer 10

arteries

Question 11

bulbus cordis—>

Answer 11

right ventricle

Question 12

primitive ventricle–>

Answer 12

left ventricle

Question 13

primitive atrium–>

Answer 13

right atrium/ left atrium wall

Question 14

sinus venous –>

Answer 14

develops into right atrium

Question 15

what is the role of the sinus venous

Answer 15

receives all embryonic venous blood (contractions begin here)

Question 16

when does the interventricular septum begin to develop

Answer 16

day 28

Question 17

middle structures of heart day 32

Answer 17

endocardial cushion
foramen primum
septum primum
foramen secundum