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DIT Quizzes Day 5
Embryology
110
Other
Professional
05/13/2013

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Term
How does the dose response curve change with the addition of a noncompetitive antagonist compared to a competitive antagonist
Definition
Competitive: no change in Vmax; increased Km (shift curve to right)
Noncompetitive: Decreases Vmax (shift curve down); decreases efficacy
Term
What pathology is associated with "worst headache of my life"
Definition
Subarachnoid hemorrhage (ruptured aneurysm)
Term
What pathology is associated with "waxy" casts in urine?
Definition
Renal failure
Term
What pathology is associated with neuropathy + AV nodal block?
Definition
Stage 2 Lyme disease
Term
What pathology is associated with port-wine stain on the ophthalmic division of the trigeminal nerve?
Definition
Sturge-Weber syndrome
Term
Urethritis, arthritis, conjunctivitis
Definition
Reiter's syndrome (reactive arthritis-->HLA-b27)
Term
What pathology is associated with lack of GpIIb/IIIa-->defect in platelets-->prolonged bleeding?
Definition
Glanzmann's thrombasthenia
Term
What pathology is associated with painless jaundice?
Definition
cancer of the pancreatic head, blocking the bile duct
Term
What nerve is most at risk for injury with a fracture of the shaft of the humerus
Definition
radial n
Term
What nerve is most at risk for injury with injury to the surgical neck of the humerus?
Definition
axillary n
Term
What nerve is most at risk for injury with injury to the supracondyle of humerus?
Definition
median n
Term
What nerve is most at risk for injury with injury to the medial epicondyle?
Definition
ulnar n
Term
What nerve is most at risk for injury with an anterior shoulder dislocation?
Definition
axillary n
Term
What nerve is most at risk for injury with injury to the carpal tunnel
Definition
median n
Term
What are the phagocyte immunodeficiencies?
Definition
Chronic granulomatous diseae
Chediak-Higashi disease
Leukocyte adhesion deficiency
Job's syndrome (Hyper IgE)
Term
What are the X-linked immunodeficiencies
Definition
Brutton's agammaglobulinemia
Wiskott-Aldrich syndrome
Chronic granulomatous disease
-sometimes HyperIgM
Term
To what immune cell does CD4 belong?
Definition
helper T cells
Term
To what immune cell does CD14 belong?
Definition
Macrophage
Term
To what immune cell does CD16 belong?
Definition
NK cells and macrophages
Term
To what immune cell does CD19 belong?
Definition
B cell
Term
To what immune cell does CD3 belong?
Definition
All T cells except NK cells
Term
To what immune cell does CD8 belong?
Definition
cytotoxic T cells
Term
What are some of the main distinguishing features in autistic disorder?
Definition
poor eye contact, poor communication skills, lower intelligence
Term
What are some of the main distinguishing features in Rett's syndrome
Definition
Seen in females, smalled head circumference early on, no normal development especially after 15 months. Midline hand wringing
Term
What developmental structure supplies oxygenated blood to the fetus?
Definition
Umbilical vein
Term
What developmental structure removes nitrogenous wastes from the fetal bladder?
Definition
Urachus
Term
What developmental structure is the fetal placental structure that secretes hCG?
Definition
Syncytiotrophoblast
Term
What developmental structure is the maternal component of the placenta?
Definition
Decidua basalis
Term
What developmental structure returns deoxygenated blood from the fetal internal iliac arteries?
Definition
Umbilical arteries
Term
Which embryonic structure of the heart gives rise to the following adult structure:
Ascending aorta and pulmonary trunk?
Definition
Truncus arteriosus
Term
Which embryonic structure of the heart gives rise to the following adult structure:
Coronary sinus?
Definition
Left horn of the sinus venosus
Term
Which embryonic structure of the heart gives rise to the following adult structure:
SVC?
Definition
Right common cardinal vein and right anterior cardinal vein
Term
Which embryonic structure of the heart gives rise to the following adult structure:
Smooth parts of the left and right ventricles?
Definition
Bulbus cordis
Term
Which embryonic structure of the heart gives rise to the following adult structure:
Smooth part of the right atrium?
Definition
Right horn of sinus venosus
Term
Which embryonic structure of the heart gives rise to the following adult structure:
Trabeculated left and right atrium?
Definition
Primitive atria
Term
Which embryonic structure of the heart gives rise to the following adult structure:
Trabeculated parts of the left and right ventricles
Definition
Primitive venticle
Term
What structure divides the truncus arteriosus into the aortic and pulmonary trunks? What is the cellular origin of this structure?
Definition
Truncal and bulbar ridges spiral and fuse to form the aorticopulmonary septum (Neural crest migration)
Term
What is the order of fetal erythropoiesis?
Definition
1. Yolk (3-8wk)
2. Liver (6-30wk)
3. Spleen (9-28wk)
4. Bone marrow (28wk onward)
Term
Which bones in adults synthesis RBCs?
Definition
Sternum, Pelvis, Rib, Cranial bones, Vertebrae, Tibia, femur
Term
Which fetal vessel has the highest oxygenation?
Definition
Umbilical vein
Term
What adult structures are derived from the 3rd aortic arch?
Definition
common carotid artery and proximal part of the internal carotid artery
Term
What adult structures are derived from the 4th aortic arch?
Definition
left: aortic arch
right: proximal part of right subclavian artery
Term
What adult structures are derived from the 6th aortic arch?
Definition
proximal part of pulmonary arteries, ductus arteriosis (left only)
Term
A 45 year old presents with BP of 160/90 on the right arm, 172/92 on the left arm, and no palpable pulses on the feet/ankles. What problem dose this pr most likely have?
Definition
Coarctation of the aorta
Term
Describe the blood flow through a PDA
Definition
Blood flows from pulmonary artery to Aorta, bypassing pulmonary circulation
Term
What congenital heart defect is associated with chromosome 22q11 deletions?
Definition
Truncus arteriosus, tetrolagy of Fallot
Term
What congenital heart defect is associated with Down syndrome?
Definition
ASD, VSD, AV septal defect (endocardial cushion defect
Term
What congenital heart defect is associated with Congenital rubella?
Definition
PDA, septal defects, pulmonary artery stenosis
Term
What congenital heart defect is associated with Turner's syndrome
Definition
Coarctation of the aorta
Term
What congenital heart defect is associated with Marfan's syndrome?
Definition
Aortic insufficiency
Term
What congenital heart defect is associated with maternal diabetes?
Definition
Transposition of great vessels
Term
What problems are the offspring of diabetic mothers at risk for?
Definition
Transposition of great vessels
Hypoglycemia after delivery
Large for gestational age (clavical fractures)
failure to progress during labor
Term
Monozygotic twins are delivered. One is pale and has a hematocrit of 15%, the other is flushed with a hematocrit of 55%. What is the cause of these features?
Definition
Twin-twin transfusion. Shared placenta or umbilical cord and one recieved more blood that the other
Term
A child presents with a cleft lip. What embryonic process failed?
Definition
Failure of fusion of the maxillary and medial nasal processes (formation of primary palate)
Term
What nerves innervate the 1st branchial arch and structures are derived from it?
Definition
CN V2 and V3
Meckels cartilage, Mandible, Malleus, incus, sphenomandibular ligament, muscles of mastication, myelohyoid, anterior belly of digastric, tensor tympani, tensor veli palatini
Term
What nerves innervate the 2nd branchial arch and structures are derived from it?
Definition
CN VII
Reichert's cartilage: stapes, styloid process, lesser horn of hyoid, stylohyoid ligament, muscles of facial expression, stapedius, stylohyoid, posterior belly of digastric
Term
What nerves innervate the 3rd branchial arch and structures are derived from it?
Definition
CN IX
Greater horn of hyoid, stylopharyngeus mm
Term
What nerves innervate the 4-6 branchial arch and structures are derived from it?
Definition
4th: X, superior laryngeal branch
most pharyngeal constrictors, cricothyroid, levator veli palatini

6th: X, recurrent laryngeal branch
all intrinsic mm of larynx except cricothyroid

Cartilages: thyroid, cricoid, arytenoids, corniculate, cuneiform
Term
From what branchial pouch are the middle ear and eustachian tubes derived?
Definition
1st pouch
Term
From what branchial pouch are the superior parathyroids derived?
Definition
4th pouch
Term
From what branchial pouch are the inferior parathyroids derived?
Definition
3rd pouch
Term
From what branchial pouch is the epithelial lining of the palatine tonsil derived?
Definition
2nd pouch
Term
From what branchial pouch is the thymus derived?
Definition
3rd pouch
Term
What cranial nerve innervates the tongue in the following way:
Taste to anterior 2/3
Definition
CN VII
Term
What cranial nerve innervates the tongue in the following way:
Taste in posterior 1/3
Definition
CN IX
Term
What cranial nerve innervates the tongue in the following way:
Motor
Definition
CN XII
Term
What cranial nerve innervates the tongue in the following way:
Sensation in the anterior 2/3
Definition
CN V3
Term
What cranial nerve innervates the tongue in the following way:
Sensation in the posterior 1/3
Definition
CN IX
Term
What abnormalities are found in an Arnold-Chiari malformation?
Definition
cerebellar tonsillar herniation through foramen magnum with aqueductal stenosis and hydrocephaly. Often presents with syringomyelia, thoraco-lumbar myelomeningocele
Term
What are the classic presenting symptoms of a syringomyelia?
Definition
"Cape-like" bilateral loss of pain and temperature sensation in upper extremities with preservation of touch sensation; Most common at C8-T1
Term
How does the presentation of a branchial cleft cyst differ from that of a thyroglossal duct cyst?
Definition
Branchial cleft cyst: lateral neck, does not move with swallowing
Thyroglossal duct cyst: midline neck neck, does move with swallowing
Term
A 23 year old presents with one testicle. What is this patient at risk for?
Definition
This patient has an undescended testicle which has a 35x higher risk for developing malignant tumor of the testicle (usually germ cell)
Term
A 24 year old develops testicular cancer. Metastatic spread occurs via what route?
Definition
testes drain to para-aortic lymph node
Term
A 16 year old female presents with amenorrhea. It is later discovered that this patient lacks a uterus and uterine tubes, and there are two round structures in the midline just superior to the labia majora. What is the most likely cause of this patients amenorrhea?
Definition
Androgen insensitivity syndrome (XY Pseudohermaphrodite)
Term
What is the female homologue to the following male structure?
Scrotum
Definition
Labia majora
Term
What is the female homologue to the following male structure?
Prostate gland
Definition
Urethral and paraurethral glands (of Skene)
Term
What is the female homologue to the following male structure?
Glans penis
Definition
Glans clitoris
Term
What is the female homologue to the following male structure?
Corpus spongiosum
Definition
Vestibular bulbs
Term
What is the female homologue to the following male structure?
Bulbourethral glands
Definition
Greater vestibular glands (of Bartholin)
Term
What is the female homologue to the following male structure?
Ventral shaft of the penis
Definition
Labia minora
Term
What gene codes for testes determining factor?
Definition
SRY gene on Y chromosome
Term
What reproductive pathology matches the following statement?
Female with short stature and no Barr body
Definition
Turner's syndrome (XO)
Term
What reproductive pathology matches the following statement?
Chromosomal XXY
Definition
Klinefelter's syndrome
Term
What reproductive pathology matches the following statement?
Chromosomal XO
Definition
Turner's syndrome
Term
What reproductive pathology matches the following statement?
Presence of ovaries but male genitalia
Definition
female pseudohermaphrodite (XX)
Term
What reproductive pathology matches the following statement?
Unable to generate DHT
Definition
5a-reductase deficiency
Term
What reproductive pathology matches the following statement?
Both ovarian and testicular tissues present
Definition
True hermaphrodite (46XX or 47XXY)
Term
What reproductive pathology matches the following statement?
Webbing of the neck
Definition
Turner's syndrome
Term
What reproductive pathology matches the following statement?
Male with Barr body in PMNs
Definition
Klinefelter's syndrome
Term
What reproductive pathology matches the following statement?
Ambiguous genitalia until puberty, then masculinization
Definition
5a-reductace deficiency
Term
Most common congenital cause of early cyanosis
Definition
Tetrology of Fallot
Term
Most common congenital cause of late cyanosis
Definition
VSD causing Eisenmenger's syndrome
Term
Most common congenital cause of amenorrhea
Definition
Turner's syndrome
Term
Most common chromosomal disorder
Definition
Trisomy 21
Term
Most common cause of congenital mental retardation
Definition
1 Fetal alcohol syndrome
2 Down syndrome
3 Fragile X syndrome
Term
Most common lethal genetic disease of Caucasians
Definition
Cystic fibrosis
Term
Most common cause of congenital malformations in the US
Definition
Fetal alcohol syndrome
Term
What germ layer gives rise to the retina
Definition
neuroectoderm
Term
What germ layer gives rise to the salivary gland
Definition
surface ectoderm
Term
What germ layer gives rise to the muscles of the abdominal wall
Definition
mesoderm
Term
What germ layer gives rise to the thymus
Definition
endoderm
Term
What germ layer gives rise to the spleen
Definition
mesoderm
Term
What germ layer gives rise to the aorticopulmonary septum
Definition
Neural crest (ectoderm)
Term
What germ layer gives rise to the anterior pituitary
Definition
Surface ectoderm
Term
What germ layer gives rise to the posterior pituitary
Definition
Neuroectoderm
Term
What germ layer gives rise to the bones of the skull
Definition
Neural crest (ectoderm)
Term
What germ layer gives rise to the cranial nerves
Definition
Neural crest (ectoderm)
Term
What is the most common type of tracheoesophageal fistula
Definition
Blind upper esophagus with lower esophagus attached to the trachea
Term
What is Potter's syndrome
Definition
Bilateral renal agenesis
Term
What is the classic presentation for congenital pyloric stenosis?
Definition
Palpable "olive" mass in epigastric region and nonbilious projectile vomiting ant ~2weeks of age
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