Embryologic derivatives

Question 1

Epidermis

Answer 1

Surface ectoderm

Question 2

Adenohypophysis (from Rathke pouch)

Answer 2

Surface ectoderm

Question 3

Lens of eye

Answer 3

Surface ectoderm

Question 4

Epithelial linings of oral cavity

Answer 4

Surface ectoderm

Question 5

Sensory organs of ear

Answer 5

Surface ectoderm

Question 6

Olfactory epithelium

Answer 6

Surface ectoderm

Question 7

Anal canal below pectinate line

Answer 7

Surface ectoderm

Question 8

Parotid, sweat, mammary glands

Answer 8

Surface ectoderm

Question 9

Brain (neurohypophysis, CNS neurons, oligodendrocytes, astrocytes, ependymal cells, pineal gland)

Answer 9

Neuroectoderm

Question 10

Retina

Answer 10

Neuroectoderm

Question 11

Spinal cord

Answer 11

Neuroectoderm

Question 12

What embryologic layer is the neural crest part of?

Answer 12

Neural crest

Question 13

PNS (dorsal root ganglia, cranial nerves, autonomic ganglia, Schwann cells)

Answer 13

Neural crest

Question 14

Melanocytes

Answer 14

Neural crest

Question 15

Chromaffin cells of adrenal medulla

Answer 15

Neural crest

Question 16

Parafollicular (C) cells of thyroid

Answer 16

Neural crest

Question 17

Pia and arachnoid

Answer 17

Neural crest

Question 18

Bones of the skull

Answer 18

Neural crest

Question 19

Odontoblasts

Answer 19

Neural crest

Question 20

Aorticopulmonary septum

Answer 20

Neural crest

Question 21

Endocardial cushions

Answer 21

Neural crest

Question 22

Neural crest derivatives pneumonic

Answer 22

MAGIC COPS 
Melanocytes
Aorticopulmonary septum
Ganglia (Enteric, dorsal root, autonomic)
Iris
Chromaffin cells
Cranial nerves 
Odontoblasts/ossicles
Parafollicular cells
Sclerae

Question 23

Muscle

Answer 23

Mesoderm

Question 24

Bone

Answer 24

Mesoderm

Question 25

Connective tissue

Answer 25

Mesoderm

Question 26

Serous linings of body cavities (Peritoneum)

Answer 26

Mesoderm

Question 27

Spleen

Answer 27

Mesoderm

Question 28

What is the spleen derived from?

Answer 28

Foregut mesentary

Question 29

Cardiovascular structures

Answer 29

Mesoderm

Question 30

Lymphatics

Answer 30

Mesoderm

Question 31

Blood

Answer 31

Mesoderm

Question 32

Wall of gut tube

Answer 32

Mesoderm

Question 33

Upper vagina

Answer 33

Mesoderm

Question 34

Kidneys

Answer 34

Mesoderm

Question 35

Adrenal cortex

Answer 35

Mesoderm

Question 36

Dermis

Answer 36

Mesoderm

Question 37

Testes

Answer 37

Mesoderm

Question 38

Ovaries

Answer 38

Mesoderm

Question 39

What induces the ectoderm to form the neuroectoderm?

Answer 39

Notochord

Question 40

What is the postnatal derivative of the notochord?

Answer 40

Nucleus pulposus

Question 41

Gut tube epithelium (including anal canal above the pectinate line)

Answer 41

Endoderm

Question 42

Most of urethra and lower vagina (derived from urogenital sinus)

Answer 42

Endoderm

Question 43

Luminal epithelial derivatives (eg lungs, liver, gallbladder, pancreas, eustachian tube, thymus, parathyroid, thyroid follicular cells)

Answer 43

Endoderm