Embryology Table Of Arches

Question 1

What muscles are derived from the mesoderm of the first arch?

Answer 1

Muscles of mastication (masster, temporalis, medial and lateral pterygoids)
Mylohyoid
Anterior digastric
Tensor tympani
Tensor veli palatini

Question 2

What muscles are derived from the mesoderm of the second arch?

Answer 2

Muscles of facial expression
Posterior digastric
Stylohyoid
Stapedius

Question 3

What muscles are derived from the mesoderm of the third arch?

Answer 3

Stylopharyngeus

Question 4

What muscles are derived from the mesoderm of the 4th and 6th arch overall?

Answer 4

Muscles of the palate except tensor veli palatini
Muscles of the pharynx except stylopharyngeus
Muscles of the larynx

Question 5

What muscles are derived from the mesoderm of the 4th arch specifically?

Answer 5

Musculus uvulae, levator teli palatini, palatopharyngeus, palatoglossus, superior middle and inferior constrictors, salpingopharyngeus, cricothyroid
(Soft palate and pharynx excluding a couple)

Question 6

What muscles are derived from the mesoderm of the 6th arch specifically?

Answer 6

Thyroarytenoid, vocalis, lateral cricoarytenoid, oblique and transverse arytenoids, posterior cricoarytenoid, aryepiglottis, thyroepiglottis
(Larynx)

Question 7

What nerve derives from the first arch?

Answer 7

Trigeminal

Question 8

What nerve derives from the second arch?

Answer 8

Facial

Question 9

What nerve derives from the third arch?

Answer 9

Glossopharyngeal

Question 10

What nerve derives from the 4th and 6th arch?

Answer 10

Vagus

Question 11

What artery derives from the first arch?

Answer 11

Maxillary artery

Question 12

What artery derives from the second arch?

Answer 12

Hyoid and stapedial

Question 13

What artery derives from the third arch?

Answer 13

Common and internal carotid

Question 14

What artery derives from the fourth arch?

Answer 14

Arch of aorta, right subclavian

Question 15

What cartilage is derived from the 1st arch?

Answer 15

Meckel’s cartilage

Question 16

What cartilage is derived from the 2nd arch?

Answer 16

Reichert’s cartilage

Question 17

Where are cartilage structures in arch’s 1, 2, 3 derived from?

Answer 17

Cartilage structures are from neural crest cells

Question 18

Where are cartilage structures in arch 4 and 6 from?

Answer 18

Cartilage structures are from the mesoderm

Question 19

What cartilage structures are derived from the first arch?

Answer 19

Malleus and incus
(Both from Meckel’s, degenerates in adulthood)

Question 20

What cartilage structures are derived from the second arch?

Answer 20

Lesser Cornu of hyoid, superior part of hyoid body
Styloid process
Stapes
(All from Reichert’s)

Question 21

What cartilage structures are derived from the third arch?

Answer 21

Greater Cornu of hyoid, inferior part of the body of hyoid

Question 22

What cartilage structures are derived from the fourth arch?

Answer 22

Epiglottis, thyroid
(Both from lateral plate mesoderm)
Larynx cartilages

Question 23

What cartilage structures are derived from the sixth arch?

Answer 23

Arytenoid, cricoid, cuneiform, corniculate
(All from lateral plate mesoderm)
Larynx cartilages

Question 24

What connective tissue structures (from neural crest cells) are derived from the first arch?

Answer 24

Sphenomandibular ligament
Anterior ligament of malleus
(Both from Meckel’s)

Question 25

What connective tissue structures (from neural crest cells) are derived from the second arch?

Answer 25

Stylohyoid ligament
Connective tissue of the tonsil

Question 26

What connective tissue structures (from neural crest cells) are derived from the third arch?

Answer 26

Connective tissue of thymus and inferior parathyroid

Question 27

What connective tissue structures (from neural crest cells) are derived from the fourth arch?

Answer 27

Connective tissue of the superior parathyroid and the thyroid