Which germ layer has two major divisions?
Ectoderm
What are the two divisions of the Ectoderm?
Surface Ectoderm and Neuroectoderm
What are the structures that arise from the Surface Ectoderm (4)?
epidermis and its derivativesDental enamelspecial sense organsanterior pituitary gland
What are the two divisions of the Neuroectoderm?
Neural tube and Neural crest cells
What structures arise from the neural tube (4)?
CNSposterior pituitarypineal glandretina
What structures arise from the neural crest cells (8)?
spinal (DRG) gangliaautonomic ganglianeurolemma of peripheral nervesarachnoid and pia matermedulla of suprarenal glandmelanocyteshead and neck structures derived from mesenchymeoutflow tract of heart (aorta, pulmonary trunk)
What germ layer gives rise to three major divisions?
Mesoderm
What are the three divisions of the mesoderm
paraxial mesodermintermediate mesodermlateral mesoderm
What structures arise from the paraxial mesoderm (4)?
boneCT associated w/ skeleton (ligaments, cartilage, fascia)muscledermis
What structures arise from the intermediate mesoderm (2)?
organs and ducts of urinary systemorgans and ducts of respiratory system
What structures arise from the lateral mesoderm (5)?
Cardiovascular systemlymphatic systemstroma of organsmembranes lining body cavitiescortex of suprarenal gland
Which germ layer doesn't have any divisions and is only one layer?
endoderm
What structures arise from the endoderm (4)?
epithelium of respiratory systemepithelium of digestive systemepithelium of bladder and urethraparenchyma of liver, pancreas and other glands
What subcategories does the ectoderm germ layer divide into?
Surface Ectoderm & Neuroectoderm (neural tube & neural crest cells)
Epidermis + derivatives: hair, nails, cutaneous glands, mammary glands
Surface Ectoderm
Dental enamel
Surface ectoderm
Special sense organs - eyes & ears
surface ectoderm
anterior pituitary gland
surface ectoderm
CNS
Neural Tube
Retina
Neural tube
Pineal gland
Neural tube
Posterior pituitary gland
neural tube
Spinal ganglia
Neural crest cells
Auto ganglia
Neural crest cells
neurolemma of peri.. nerves
Neural crest cells
arachnoid + pia
Neural crest cells
Medulla of supraneal gland
neural crest cells
melanocytes
neural crest cells
head + neck structures derived from mesenchyme
neural crest cells
What subcategories is the Mesoderm germ layer divided into?
Paraxial Mesoderm, Intermediate Mesoderm, Lateral Mesoderm
Bone
paraxial mesoderm
connective tissue associated with skeleton - cartilage, ligaments, fascia
paraxial mesoderm
muscle
paraxial mesoderm
dermis
paraxial mesoderm
organs + ducts of urinary system
intermediate mesoderm
organs + ducts of reproductive system
intermediate mesoderm
cardiovascular system: blood cells
lateral mesoderm
lymphatic system
lateral mesoderm
stroma of organs
lateral mesoderm
membranes lining body cavity
lateral mesoderm
cortex of supraneal gland
lateral mesoderm
epithelium of respiratory system
endoderm
epithelium of digestive system
endoderm
epithelium of bladder + urethra
endoderm
parenchyma of liver, pancreas, thyroid, parathyroid, tonsils, and thymus
endoderm