Derivatives of germ layers

Question 1

What is derived from the head mesoderm?

Answer 1

cranium
connective tissue of head
dentin

Question 2

What is derived from the neuroectoderm (neural tube)?

Answer 2

CNS
retina
pineal body
posterior pituitary gland

Question 3

What is derived from the neuroectoderm (neural crest)

Answer 3

cranial and sensory ganglia and nerves
adrenal medulla
melanocytes
pharyngeal arch cartilages
head mesenchyme and connective tissue
Schwann cells
odontoblasts

Question 4

What is derived from the surface ectoderm?

Answer 4

epidermis, hair, nails, cutaneous, and mammary glands
anterior pituitary gland
enamel of teeth
internal ear
corneal epithelium and lens of eye

Question 5

What is derived from the lateral mesoderm?

Answer 5

Connective tissue and muscle of viscera
serous membranes of pleura, pericardium and peritoneum
blood and lymph cells
cardiovascular and lymphatic systems
spleen
adrenal cortex

Question 6

What is derived from the intermediate mesoderm?

Answer 6

Urogenital system including gonads, ducts, and accessory glands

Question 7

What is derived from the paraxial mesoderm?

Answer 7

Skeletal muscle of trunk and limbs except cranium
muscles of head
dermis of skin
connective tissue

Question 8

What is derived from the endoderm?

Answer 8

Epithelial lining of:
respiratory tract
GI tract
Urinary bladder and urachus
Epithelial parts of:
thyroid gland
tympanic cavity
auditory tube
tonsils
parathyroid glands
liver
pancreas