germ layer derivatives

Question 1

Endoderm

Answer 1

Epithelial Lining for:
   GITract:
      foregut
      midgut
      hindgut
   lower respiratory system
      larynx
      trachea
      bronchi
      lung
   GUT
      urinary bladder
      urethra
      LOWER vagina
   pharyngeal pouches:
      auditory and middle ear
      palatine tonsils
      parathyroid
      thymus

PARENCHYMA FOR:
   liver
   pancreas
   submandibular, sublingual
   follicles for thyroid (NOT C cells)
      (glands of digestion)

Question 2

Mesoderm

Answer 2

Musculoskeletal:
   Muscle
      smooth - except eye constrictor/dilator
      cardiac
      skeletal
   connnective tissue
   all  serous membrane
   bone and cartilage

CV
blood
lymph
cardiovascular organs

SPLEEN

ADRENAL CORTEX

GUT
kidney and ureter
gonads and genital tract

Duramater

Question 3

Surface ectoderm

Answer 3

Epidermis
Hair
Nails
INNER EAR and EXTERNAL EAR
Enamel of teeth
LENS of eye
ANT pit (rathke pouch)
Parotid gland
Anal canal BELOW THE PECTINATE LINE
mammary gland

Question 4

Neuroectoderm

Answer 4

Neural tube
   CNS
   Retina nd Optic nerve
   Pineal gland
   neurohyphosis
   astrocytes
   oligodendrocytes (CNS myelin)

Question 5

Neural Crest

Answer 5

Adrenal Medula
Ganglia
   Sensory - Pseudounipolar neurons
   autonomic - post ganglionic
Pigment
Schwann cells
Meninges
   PIA and Arachnodi
Pharyngeal arch cartilage and bone
Ondotoblasts
Parafolicular C cells
Aoritcopulmonary septum
Endocardial cushions