Embryology tissue derivatives
Terms
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copy deck
- Adenohypophysis
- anterior lobe of pituitary - derives from Rathke's pouch - from primitive mouth invaginating upward
- Lens of the eye
- Surface ectoderm
- epithelial linings
- surface ectoderm
- Epidermis
- surface Ectoderm
- Neurohypophysis
- Neuroectoderm
-
Neurohypophysis
(what is it and what structure did it come from?) - posterior lobe of pituitary - from an invagination of the hypothalamus
- CNS neurons, oligodendrocytes, astrocytes
- Neuroectoderm
- Pineal Gland
- Neuroectoderm
- Autonomic Nervous System
- Neural Crest
-
Dorsal Root ganglia
Celiac ganglion - neural crest
- Melanocytes
-
Neural crest
(lack of migration of neural crest cells -> albinism) - Chromaffin cells of adrenal medulla
-
Neural crest
(makes epi) - Enterochromaffin cells
-
Neural crest
(basal granular cells in gut - make 5-HT, substance P, enkephalin)` - Pia
- neural crest
- Schwann cells
- neural crest
- odontoblasts
- neural crest
- parafollicular (C) cells of thyroid
-
neural crest
(source of thyrocalcitonin; from 4th pharyngeal pouch) - Laryngeal cartilage
- Neural Crest
- Generally, what do neural crest cells become?
-
non-CNS neural cells (ganglia, schwann) and cells rel to nervous system that make NTs (chromaffin, etc)
also leptomeninges, odontocytes, and laryngeal cartilage (bone/cartilage from branchial arches) - Dura connective tissue
- Mesoderm
- muscle
- mesoderm
- bone
- mesoderm
- CV structures, blood
- mesoderm
- lymphatics
- mesoderm
- urogenital structures
- mesoderm
- serous linings (peritoneum)
- mesoderm
- spleen
- mesoderm
- adrenal cortex
- mesoderm
- gut tube epithelium - lungs, liver, pancreas
- Endoderm
- Thymus
- endoderm (also starts as gut tube)
- Thyroid, parathyroid
-
Endoderm
(these also derive from gut tube) - Nucleus propulsus (of intervertebral disk)
- Notochord
- What induces ectoderm to form neuroectoderm (neural plate)?
- Notochord
- Nephrons
- Metanephric mesoderm
- Exocrine pancreas
- acinar cells and ducts form from endoderm surrounded by mesoderm
- Endocrine pancreas
- meosdermal cells aggregate to form pancreatic islet cells