Embryologic Derivatives Flashcards
1
Q
Surface Ectoderm
A
Epidermis Adenohypophysis (from Rathke's pouch) Lens of eye Anal canal below the pectinate line Parotid, sweat, and mammary glands Epithelial linings of oral cavity, sensory organs of the ear and olfactory epithelium
2
Q
Neuroectoderm
A
Retina & optic n.
Spinal Cord
Brain –neurohypophysis, CNS neurons, oligodendrocytes, astrocytes, ependymal cells, pineal gland
3
Q
Neural Crest
A
PNS --DRG, CNs, celiac ganglion, Schwann cells, ANS Melanocytes Chromaffin cells of adrenal medulla Parafollicular C-Cells of thyroid Pia & Arachnoid Bones of the skull Odontoblasts Aorticopulmonary septum Bones of the inner ear Cornea, sclera, cilary mm., pigment
4
Q
Mesoderm
A
Muscle Bone Connective tissue Serous linings of body cavities Spleen CV structures Lymphatics Blood Wall of gut tube Vagina Kidneys Adrenal cortex Dermis Testes /Ovaries
5
Q
Endoderm
A
Gut tube epithelium (including anal canal above pectinate line)
Most of the urethra (form UG sinus)
Luminal epithelial derivates –lungs, liver, gallbladder, pancreas, eustachain tube, thymus, parathyroid, thyroid follicular cells
6
Q
Mesoderman Defects = VACTERL
A
Vertebral defects Anal atresia Cardiac defects Tracheo-Esophageal fistula Renal defects Limb defects (bone/muscle)
7
Q
Notochord
A
Nucleus pulpous of the intervertebral discs
