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Embryo Exam 4 mash
| Question | Answer |
|---|---|
| What specific embryonic structure(s): A. fail to fuse in lateral cleft lip? B. Gives rises to the PRIMARY palate? | A. Medial alar swelling and maxillary swelling B. Intermaxillary plate |
| Name the components formed by the following: A. ala temporalis B. hyposphyseal cartilage | A. inner part of greater wing of sphenoid B. Sphenoid body |
| List four components of the membranous viscerocranium | Maxilla, mandible, nasal bone, lacrimal bone, zygomatic bone, vomer, and palatine bones |
| T/F In general the limbs reach the cartilaginous stage at 10 weeks of embryonic development | false |
| T/F Ossification (primary) of a rib takes place from a single center located at the head | false |
| T/F The primary center of ossification in the scapula forms both the body and most of the acromion | True |
| T/F Concerning the metacarpals and metatarsals of digits 2-5, secondary centers of ossification appear only in distal epiphyses | True |
| Anomaly sometimes referred to as the 'mermaid deformity' | Sirenomelia |
| Besides ganglia, Schwann cells, and the cartilages of the branchial arches, list 4 derivatives of the neural crest | Satellite cells, odontoblasts, melanocytes, part of pia and arachnoid |
| The thalamus and hypothalamus develop from what embryonic components? | alar plates and diencephalon |
| Component that forms astrocytes and oligodendrocytes, but no ependymal cells | Gliablasts |
| Primordium for the cerebellum | Rhomboid lips |
| Functional classification (3 letter use) of the columns in the basal plate of the myelencephalon | GVE GSE SVE |
| Name the components that form from the intermaxillary segment | Philtrum, Middle of maxilla (incisors?), entire primary palate |
| In the lateral cleft upper jaw, exactly where is the cleft located? | Between the incisors and cuspids |
| Name the components formed from the following: A. Trabeculae cranii B. Ala orbitalis | A. body of ethmoid B. Lesser wing of the sphenoid |
| Name the components that specifically form the following: A. Occipital clivus and tectum B. Body of ethmoid | A. parachondrial cartilage and occipital sclerotome B. trabeculae cranii |
| Anomaly in which the sagittal suture closes | Scaphocephalus |
| The patella is completely cartilaginous at five years of age T/F | False |
| SPECIFICALLY what is the embryonic developmental cause of a : A. cleft sternum B. supernumerary rib | A. sternal bands fail to fuse B. Overgrowth of a costal cartilage somewhere other than thoracic region forming and extra rib (usually C7 or L1) |
| T/F Each rib develops from 2 centers of chondrification | False |
| T/F In general, the limbs reach the cartilaginous stage at 10 weeks of embryonic development | False |
| The primordium of the cerebral cortex | Pallium |
| Functional classification ( 3 letter words) of the columns in the basal plate of the metencephalon | GSE GVE |
| Brain vesicle which forms only the pons and cerebellum | Metencephalon |
| Briefly discuss how the dorsal roots of spinal nerves develop | dorsal roots develop from the neural crest |
| What develops from the corpus striatum | Caudate nucleus and lenticular nucleus |
| Anomaly produced when any area of the neural tube fails to close; nervous tissue remains flattened and exposed to the surface | Rachischisis |
| What specific embryonic structure(s): A. fail to fuse in median cleft lip B. gives rise to the SECONDARY palate | A. Medial nasal swellings B. Palatine shelves of the maxillary process |
| Name the components formed from the following: A. Ala temporalis B. Periotic capsule | A. Inner part of greater wing of sphenoid B. Petrous and mastoid portions of temporal bone |
| T/F Ossification (primary) of a rib takes place from a single center located near the angle | True |
| Anomaly of no limb development | Amelia |
| What embryonic structures form the alae of the nose | Lateral nasal swellings |
| What does each of the following form in the adult A. Occipital fontanelle B. Anterolateral fontanelle | A. lambda B. pterion |
| T/F Ribs have a single center of chondrification at nine weeks | False |
| T/F The patella is completely cartilaginous at birth | True |
| T/F Primary centers of ossification begin in the humerus, radius, ulna, tibia, fibula, and femur at 8 weeks | True |
| Congenital malformation caused when mesenchyme between phalanges fails to breakdown | Syndactyly |
| Myelination in the spinal cord begins about______ month (1,2,4,8) of fetal development. Additionally, at the cord ends at the ____vertebral level | 4th, L3 |
| Briefly discuss how the dorsal roots of spinal nerves develop | From neural crest (sensory) |
| What develops from the corpus striatum | Future caudate and lenticular nuclei |
| Anomaly of the skull in which there is premature closure of one or more sutures | Craniosynostosis |
| Give the specific development of the middle cerebellar peduncle | Axons growing from pontine nuclei to cerebellum |
Created by:
trevpeters
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