(first midterm) Lecture 5 (4/18/16) PT. 1

Question 1

The vessel that exits the heart on the ventral side is the….

Answer 1

ventral aorta

Question 2

In every back-boned animal, how many aortic arches are there?

Answer 2

6

Question 3

Why are they called aortic arches?

Answer 3

They go from the ventral aorta to the dorsal aorta; they curve like an arch

Question 4

In an embryo, the ventral aorta subdivides into a right and left tube. Which side becomes the arch of the aorta?

Answer 4

Left side arch IV

right side disappears

Question 5

In an embryo, the lungs hook up to which arch? What is it called?

Answer 5

6

Pulmonary arch

Question 6

The arch of the aorta is what arch?

What is it sometimes called

Answer 6

4

Systemic arch

Question 7

Arch 3 is called what? Where do they go?

Answer 7

Carotid arch

Goes to neck and head

Question 8

What is the carotid that goes to the inside of your head? The outside of your head?

Answer 8

Inside = internal
Outside = external

Question 9

The internal carotid is derived from what?

The external carotid?

Answer 9

internal: dorsal aorta
external: ventral aorta

Question 10

What happens to arch 5?

Answer 10

it’s gone

Question 11

What happens to arch 2?

Answer 11

bye felicia

Question 12

Coming off of arch 4 is a big vessel that goes to your arm. What is it called?

Answer 12

Subclavian artery

Question 13

Which arch is the carotid arch?

Answer 13

3

Question 14

The left side arch 4 is what?

Answer 14

Arch of the aorta

Question 15

Where does the subclavian artery branch off of?

Answer 15

Arch 4

Question 16

You didn’t use your lungs while you were in your mom. Instead, the oxygen came from blood. The vessel that made this happen is called what?

Answer 16

ductus arteriosus

Question 17

After you’re born, the ductus arteriosus turns into what?

Answer 17

ligamentum arteriosum

Question 18

What goes to the larynx and “tries to get through” but there are blood vessels in the way?

Answer 18

Recurrent laryngeal nerve

Question 19

When can the recurrent laryngeal nerve “get through” on the right side?

Answer 19

after arch 4

Question 20

When can the recurrent laryngeal nerve “get through” on the left side?

Answer 20

has to hook around ligamentum arteriosum; arch 6

Question 21

What arch does the maxillary arch come off of?

Answer 21

arch 1

Question 22

What happens to arch 1?

Answer 22

Most disappears except for the maxillary artery

Question 23

Arch 1:
Arch 2:
Arch 3:
Arch 4:
Arch 5:
Arch 6:

Answer 23

Arch 1: mostly disappear (maxillary artery)
Arch 2: disappears
Arch 3: carotid arch
Arch 4: right disappears, left becomes arch of aorta
Arch 5: disappears
Arch 6: pulmonary arch

Question 24

The brachiocephalic artery…

Answer 24

Right 3rd & 4th arches

Question 25

“Have I not commanded you? Be strong and courageous. Do not be afraid; do not be discouraged, for the LORD your God will be with you wherever you go.” - Joshua 1:9

Answer 25

:)