Internal components of phrygeneal arch

Question 1

What is the old name for the pharygeneal arches?

Answer 1

Brachial arches

Question 2

How does the gill arch system work in fish?

Answer 2

Heart pumps low oxygen to gills.

Oxygenated blood from gills goes to aorta body.

Arteries supply oxygen to body, veins return low oxygen blood to heart.

Question 3

How is blood pumped in the human embryo?

Answer 3

Blood from veins returns to heart, is pumped to aortic sac

Blood pumps up aortic arches 3,4, and 6.

From here, blood travels to anteriorly and posteriorly in the right and left aortic arches of the head.

Lastly, blood from dorsal aortae of head fuse to travel down as a single aorta of the body, and ultimately the low oxygen blood is returned to the venous system.

Question 4

Which aortic arches is blood pumped up in the human embryonic system?

Answer 4

Blood pumps up aortic arches 3,4, and 6.

Question 5

Where is the pharynx located?

Answer 5

Anterior most part of the esophagus stomach and midgut

Question 6

How does the arches develop?

Answer 6

as columns of tissue on either side of embryonic pharynx

Question 7

Which rich develops first?

Answer 7

first arch

Question 8

Which arch develops second?

Answer 8

second arch

Question 9

What does the first arch divide into?

Answer 9

Maxillary division
mandibular division
by bending around the oral plate

Question 10

Where does the second arch develop?

Answer 10

Behind the oral plate

followed by the third

Question 11

Which arch form while the cranial neuropore is open?

Answer 11

first arch

Question 12

What are the structures within the PA?

Answer 12

Aortic arch 
PA Mesoderm (muscle)
 Cranial nerve
NC Mesoderm (cartilage)
Pharyngeal pouch
Pharyngeal  groove

Question 13

What does the neural crest contribute to?

Answer 13

cartilage and bone in the head

Question 14

Which aortic arches degenerates?

Answer 14

1

2

Question 15

Which aortic arches become the carotid arteries?

Answer 15

3

Question 16

Which aortic arches become left arch of the aorta?

Answer 16

left aortic arch 4

Question 17

Which aortic arch become the right subclavian?

Answer 17

right aortic arch 4

Question 18

Which aortic arch become pulmonary arteries?

Answer 18

6

Question 19

Which aortic arch hasn’t formed yet?

Answer 19

5

Question 20

Where are the aortic arches located?

Answer 20

in the mesoderm of the pouches

Question 21

Which pouch doesn’t have an aortic arch?

Answer 21

PA 1