Test
IBS Set 6 Quiz - Embryology - Semester 2 Recap.
Preguntas del test (32)
1What is the following structure called?
- ABlastocyst
- BMorula
- CZygote
2The primitive streak is indicative of gastrulation occuring.
- AVerdadero
- BFalso
3The ectoderm gives rise to...
- AEnamel
- BEpidermis
- CNervous system
- DCardiovascular system
- ERespiratory system
- FGastrointestinal system
4The mesoderm gives rise to...
- ACardiovascular system
- BMuscle
- CConnective tissue
- DEpidermis
- EUrinary system
- FGastrointestinal tract
5The endoderm gives rise to...
- ARespiratory system
- BGastrointestinal tract
- CUrinary system
- DCardiovascular system
- EEpidermis
- FNervous system
6The notochord forms from the notochordal plate in a cranial to caudal sequence.
- AVerdadero
- BFalso
7What substances does the primitive node release?
- ABrain derived neurotrophic factor
- BNODAL
- CBMP4
- DNoggin
- ECSPG's
8The function of NODAL is...
- AMaintains the primitive streak
- BStimulates skin formation from the ectoderm
- CStimulates cranial structure and nervous system development
9The function of BMP4 is...
- AMaintains the primitive streak
- BStimulates skin formation from the ectoderm
- CStimulates cranial structure and nervous system development
10The function of Noggin is...
- AMaintains the primitive streak
- BStimulates skin formation from the ectoderm
- CStimulates cranial structure and nervous system development
11Neurulation is folding of the neural plate which continues until formation of a neural tube. The closure disconnects the neural crest from the ectoderm, also forming neural crest cells.
- AVerdadero
- BFalso
12The notochord releases BMP that patterns the ventral side of the neural tube which gives the precursor to the motor neurones of the ventral spinal cord
- AVerdadero
- BFalso
13Neural crest cells are formed when the neural tube closes and detaches from the ectoderm. Give some examples of where they may migrate and what structures develop.
- AEctoderm - melanocytes
- BMesoderm - ganglia, bones of the face and skull
- CEndoderm - urinary system
14Spina Bifida is caused by failure of the neural tube to close.
- AVerdadero
- BFalso
15NODAL helps to establish internal asymmetry.
- AVerdadero
- BFalso
16Mutations in SHH leads to lack of bilateral symmetry and development of conditions like cyclopsia.
- AVerdadero
- BFalso
17Hox genes control body segmentation; essentially determining what section of the body will become what particular limb etc.
- AVerdadero
- BFalso
18The visceral layer of the lateral plate mesoderm gives rise to what structure?
- AGI tract
- BMuscle
- CHeart
- DLungs
19The parietal layer of the lateral plate mesoderm gives rise to what structures?
- ABones of limbs
- BConnective tissue of limbs
- CUrogenital system
- DHeart
20The intermediate mesoderm gives rise to what structure?
- AUrogenital system
- BRespiratory system
- CConnective tissue of limbs
- DGI tract
21The paraxial mesoderm differentiates into dermatome, myotome and sclerotome. What will the dermatome become?
- ADermis
- BMuscle
- CTendon
- DCartilage
- EBone
22The paraxial mesoderm differentiates into dermatome, myotome and sclerotome. What will the myotome become?
- ADermis
- BMuscle
- CTendon
- DCartilage
- EBone
23The paraxial mesoderm differentiates into dermatome, myotome and sclerotome. What will the sclerotome become?
- ADermis
- BMuscle
- CTendon
- DCartilage
- EBone
24What structures may the pharyngeal pouches give rise to?
- APalatine tonsils
- BParathyroid gland
- CThymus gland
- DThyroid gland
- ECricoid cartilage
25Neural crest cells migrate to the pharyngeal arches. Failure of migration can lead to conditions such as spina bifida.
- AVerdadero
- BFalso
26What muscular and skeletal structures arise from the 1st pharyngeal arch?
- AMandible
- BMuscles of mastication
- CMuscles of facial expression
- DStyloid process
27What muscular and skeletal structures arise from the 2nd pharyngeal arch?
- AMandible
- BStyloid process
- CMuscles of mastication
- DMuscles of facial expression
28What muscular and skeletal structures arise from the 3rd pharyngeal arch?
- AStylopharyngeus
- BHyoid
- CStyloid process
- DThyroid cartilage
29What muscular and skeletal structures arise from the 4th pharyngeal arch?
- AMandible
- BPharyngeal constrictors
- CThyroid cartilage
- DMuscles of facial expression
30What muscular and skeletal structures arise from the 6th pharyngeal arch?
- ACricoid cartilage
- BIntrinsic muscles of the larynx
- CPharyngeal constrictors
- DThyroid cartilage
31The medial nasal prominences fuse to form the secondary palate.
- AVerdadero
- BFalso
32The maxillary prominences fuse to form the secondary palate.
- AVerdadero
- BFalso
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