Genetic and Developmental Disorders Flashcards
_____ is multiple anomalies related to a disorder.
syndrome
_____ promote developmental anomalies.
Teratogens
Name three facial malformations associated with Fetal Alcohol Syndrome.
- small appearing eyes due to epicanthal folds
- smooth philtrum
- thin upper lip
What is the TORCH complex?
Toxoplasmosis Other Rubella Cytomegalovirus Herpes type 2
What viruses and bacteria cause TORCH?
Viruses: varicella-zoster, HIV, Epstein-Barr, Zika
Bacteria: syphilis, tuberculosis, listeriosis, leptospirosis
What is complete lac of organ formation?
agenesis
What is immature-formed organ (rudimentary tissue)?
aplasia
What is reduced size?
hypoplasia
What is failure of opposed structures to fuse –> midline defect?
dysraphic anomaly
What is persistence of embryologic tissue?
involution failure
What is incomplete cleavage?
division failure
What is incomplete formation of lumen?
atresia
What is disorganized cell development?
dysplasia
What is organ development in an abnormal site?
ectopia (heterotopia)
What is normal tissue in an abnormal site?
choristoma
What is congenitally missing teeth?
hypodontia
CL, CP, bifid nose, low set ears, and thin upper lip are examples of what type of dysmorphic presentation?
hypertelorism
Low set ears may be associated with anomalies in what three areas?
- kidneys
- digestive tract
- heart
Upslanting palpebral fissures is associated with ________.
Down Syndrome
Downslanting palpebral fissures are associated with _______.
Treacher Collins Syndrome
Familial Hypercholesterolemia, Marfan Syndrome, Ehlers-Danlos Syndrome, and Neurofibromatosis are examples of?
autosomal dominant single gene abnormalities
What is associated with elevated serum low-density lipoproteins (LDLs)?
familial hypercholesterolemia
Atherosclerosis, xanthomas, xanthelasma are features of?
familial hypercholesterolemia
What is caused by gene mutation encoding fibrillin and promotes abnormal connective tissue development?
Marfan syndrome
Long shaped skull with frontal bossing, sternum defects, hyperextensibility of joints, kyphoscoliosis, and arachnodactyly are features of what?
Marfan syndrome
Cardiovascular, ocular, and oral symptoms are additional features of what?
Marfan syndrome
_____ is a collagen disorder.
Ehlers-Danlos syndrome
What Ehlers-Danlos syndrome subtype is most severe?
EDS VI
Hyperelasticity of skin, fragile skin, extreme laxity of joints, mitral valve prolapse, aortic aneurysm, occasional blue sclera are clinical features of what?
Ehlers-Danlos syndrome
Periodontal disease, fragile gingiva, TMJ disloation, hypermobile tongue are oral symptoms of what?
Ehlers-Danlos syndrome
Cafe-au-lait spots are associated with?
neurofibromatosis type I
Lisch ndules are associated with what?
neurofibromatosis type I