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Embryo Quiz 4 NWHSU

QuestionAnswer
In lateral cleft upper JAW, where is the cleft located? Between the cuspid and incison
What specific embryonic structure(s) form(s) the alae of the nose? Lateral Nasal Swellings
Name the components formed from the following: (Be Specific!) Periotic Capsule Mastoid and petrous portions of temporal bone
Name the components formed from the following: (Be Specific!) Ala Orbitalis Lesser wing of the sphenoid
__________ anomaly of skull in which there is premature closure of one or more sutures. Craniosynostosis
Name the components formed from the following: (Be Specific!) Trabeculae cranii Body of Ethmoid
Ossification (primary) of a rib takes place from a single located at the head. (write word true or false) False
Primary centers of ossification begin in the humerus, radius, ulna, tibia, fibula, and femur at 8 weeks (write word true or false) True
SPECIFICALLY, what is the embryonic (developmental) cause of a: Cleft Sternum Failure of sternal bands to fuse
ECIFICALLY, what is the embryonic (developmental) cause of a: Supernumerary rib Over development of the costal process of a vertebra outside the thoracic column, usually at C7 or L1
_______ anomaly sometimes referred to as the 'mermaid deformity' Sirenomelia
The peiphyses of most long bones fuse with the diaphysis by the 20th year (write the word true or false) True
_________ the primordium for the cerebral cortex. Pallium
___________ functional classification (use 3 letter) of the column in the basal plate of the mesencephalon GSE GVE
____________ brain vesicle which forms ONLY the pons and cerebellum Metencephalon
Briefly discuss how the dorsal roots of spinal nerves develop. Neural crest cells migrate into position along the developing spinal cord
What develops from the corpus striatum? Caudate and lenticular nuclei
What specific embryonic structure(s): fail to fuse in lateral cleft lip? Medial nasal swellings
What specific embryonic structure(s): gives rise to the PRIMARY palate? Intermaxiallary plate
Name the components formed from the following: Ala temporalis inner part of greater wing of sphenoid
Name the components formed from the following: Hypophyseal cartilage sphenoid body
List four components of the membranous viscerocranium Bones of the face, ear ossicles, hyoid, cricoid and thyroid cartilages
In general, the limbs reach the cartilaginous stage at 10 weeks of embryonic development (write true or false) False
The primary center of ossification in the scapula forms both the body and most of the acromion (write true or false) True
Concerning the metacarpals and metatarsals of digits 2-5, secondary centers of ossification appear only in distal epiphyses. (True or false) True
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 not ependymal cells. Gliablasts
Primordium for the cerebellum cortex Rhombic 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 Phitrum 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 that specifically form the following a. occipital clivus and tectum parachondrial cartilage and occipital sclerotome
Name the components that specifically form the following Body of Ethmoid trabeculae cranii
Anomaly in which the sagittal suture closes Scaphocephalus
The patella is completely cartilaginous at five years of age (true or false) False
Each rib develops from 2 centers of chondrification (true or false) False
In general, the limbs reach the cartilaginous stage at 10 weeks of embryonic development (true or false) False
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 Medial nasal swellings
What specific embryonic structure(s): b. gives rise to SECONDARY palate Palatine shelves of the maxillary process
Ossification (primary) of a rib takes place from a single center located near the angle (true or false) True
Concerning the metacarpals and metatarsals of digits 2-5, secondary centers of ossification appear only in proximal epiphyses (true or false) False
Anomaly with no limb development amelia
What does each of the following form in the adult a. occipital fontanelle lambda
What does each of the following form in the adult b. anterolateral fontanelle pterion
Ribs have a single center of chondrification at nine weeks (true or false) False
The patella is completely cartilaginous at birth (true or false) True
Give the specific development of the middle cerebellar peduncles Axons growing from pontine nuclei to cerebellum
Congenital malformation caused when mesenchyme between phalanges fails to breakdown Syndactyly
Myelination in the spinal cord begins about __________ month ( 1st, 2nd, 4th, or 8th) of fetal development. Additionally, at birth the cord ends at the ________ vertebral level. 4th month L3
Specifically what is the embryonic cause of a: oblique facial cleft failure to fuse lateral and medial nasal and maxillary swellings
What specific embryonic processes fail to fuse in cleft secondary plate? The palatine shelves of the maxillary process (4 incisors)
What does the following form in the adult? Anterior fontanelle Bregma
What does the following form in the adult? Posteriorlateral fontanelle Asterion
The cranial capacity of the skull increases until age ____, but MOST of its capacity is achieved by age ____. 15-16 5-7
The developing skull is divided into 4 subdivisions based on location and ossification. Name the subdivisions. membranous neurocranium, membranous, cartilagenous neurocranium, cartilagenous viscerocranium
NAME the specific EMBRYONIC cartilage which forms the following: a. inner part of the greater wing of sphenoid b. body of ethmoid c. occipital clivus and tectum mastoid part of the temporal bone d. body of sphenoid e. lesser wing a. ala temporalis b. trabeculae cranii c. occipital scleratomes d. hypophyseal cartilages e. ala orbitalis
Anomaly of skull in which roof of cranial vault is unclosed. Craniocephaly
Anaomaly of skull in which the coronal and/or lambdoidal suture closes prematurely on one side only, skull becomes twisted and asymmetrical in shape. plagiocephaly
The clavicals articulate with the presternal cartilage which later joins the manubrium of the sternum. (True or false) False (Suprasternal)
In the foot, secondary centers of ossification appear only in the proximal epiphyses of the TOE bones. (True or false) True
Secondary centers of ossification form in the epiphyses of long bones between 5 weeks of fetal development and the 20th year (depending on the specific bone). (True or false) False (birth to 20 years)
the clavicle has the last primary center of ossification to appear in the body. (True or false) True
The sternum develops by endochondral and intramembrous ossification. True or false False (Clavicle)
Describe in detail the anomaly known as the "lobster claw". abnormal cleft between the 2nd and 4th metacarpals and soft tissues, 3rd metacarpals and phalange are usually absent, thumb and index finger can be fused.
The epithalamus develops from what embryonic components? Include secondary brain vesicle and plate. dicephalon, roof plate
The bilateral longitudinal groove in the developing spinal cord used to seperate basal and alar plates. sulcus limitans
Briefly discuss the differentiation of the microglia. from messenchyme
Anomaly usually due to aqueductal stenosis. Hydrocephalus
Created by: T1NWHSU