Saturday Week 1 SA Portion 2 Flashcards

(37 cards)

1
Q

in pt w B12 deficieny, supplementation w __ alone can precipitate demyelination
can also cause __ phenom like MS

in younger pt w new onset muscle fatigue w use/diplopia, think __
look for __

A

folate
Lhermette

MG
thymoma

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2
Q

retinoblastoma tumors occur via ___ 2 hit hypothesis

Conontruncal defects in Digeorge syndrome T, T, interrupted ___
primarily deficient in __ cells
pt will have normal numbers of __ cells

KOH mount from oral thrush shows dimorphic fungus as __/__/__ yeast

A

Knudson

truncus arteriosus, Tet of fallot, aortic arch
T
B

hyphae, pseudohyphae, budding

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3
Q

polyuria in DKA occurs secondary to __ diurses via glycosuria
acidemia and _ deposition in smooth muscle known to cause ab pain

see hypo__ and hyper__, __ volemia
can have hyper__ due to muscle breakdown

A

osmotic
carb

Na, Kalemia, hypo
ammonemia

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4
Q

occipital headache, cerebellar dysfunction esp w valsava and downward displacement of the cerebellar tonsils indicates __ as dx
small __

incomplete development/separation of embryonic forebrain seen w H__

A

chiari 1 malformation
posterior fossa

holoprosencephaly

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5
Q

46XY karyotype with female phenotype is __ syndrome
mutated __ receptors in body
cryptorchid testes present in ab/inguinal region, secrete __, which is peripherally converted to estradiol and __ develops
vagina ends in __
antimullerian hormone prevents formation of __/__ vagina
male ssc are ___

__ is AR disorder w ambiguous genitals at birth
look for inc __/__ ratio
LH/FSH will be ___

A

AIS
testosterone
testosterone, breast

blind pouch
uterus, upper vagina
absent

5AR deficieny
Test/DHT

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6
Q

CAH is caused by __ def
life threatening __
affected girls will ahve __ genitalia and inc __ but dec __/__

__ agenesis w amenorrhea and absence of __/__/__
LH/FSH/Estrogen is ___

A

21 hydroxylase
salt wastng, ambiguous
Testosterone, LH/FSH

mullerian, uterus, FT, proximal vagina
noraml

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7
Q

Pheo arises from __ in AM
stimulates peripheral __ and cardiac __ receptors to cause severe HTN
Phenoxybenzamine is long acting A __ to prevent peripheral VC (always 1st)
secondary beta blcokers like P/M dec adrenergic stim to heart

I__ is nonselective B agonist used in bradycardia/heart block

P__ is alpha agonist used as decongestant/pressor

A

chromaffin cells
A1, B2
blocker
propanolol, metoprolol

isoprotenerol
phenylephrine

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8
Q

IVH occurs due to rupture of the __
vasc network is __, vulnerable to damage
hemorrhage occurs in caudate/thalamus, can extend into L/3/4 ventricles
pt develops H/bulging __

look for c__/h__

__ is neuro damage as a result of hyperbilirubinemia in neonates
brain appears __

A

germinal matrix
weak
lateral, 3/4
hydrocephalus, AF

clots, hemorrhage

kernicterus
yellow

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9
Q

ototoxic drugs can tinnitus by damaging hair cells in organ of __ in cochlear membranous labrynth
occurs in apical __ of hair cells
lose ability to hear __ freq sounds

__ can cause alopecia, myocardial damage, myelosuppression

__results in myelosuppression and fatty liver

A

corti
stereocilia
high

etoposide

MTX

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10
Q

fever, SOB, dry crackles, inflam/fibrosis seen in SE of __ use
called interstital __
resolves w __/___ dose
other se include A/__ abnorms, __ skin discoloration

ILD is a SE of N/M/B

A

amiodarone
pneumonitiis
dec, stopping
arrhythmias, thyroid, blue/grey

nitrofurantoin, MTX, bleo

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11
Q

Apixiban can cause __ as se
cough, SOB, __ and fever acutely

SE of hydroxychloroquine skin __ and R___

SE of sotalol include T__ and excessive __ blockade
pt w HFrEF can get __ and pulm __

A

DAH
hemoptysis

pigmentation, retinopathy

TdP, beta
exacerbation, edema

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12
Q

PGE1 stimulates gastric epithelial __ prodxn, protecting against acid
w heavy __ use, ulcers can form
M__ is PGE1 analog to tx/prevent NSAID induced ulcers

Aspirin exacerbated airway disease presents w chronic __ and intranasal __
due to dysregulation of __ metabolism via inhibited __ enzymes
AA pumped down __ pathway, leads to formation of bronchoconstrictive leuks _/__/__

tx w M__ (leuk inhib)

A

mucus
NSAID
misoprostol

rhinitis, polyps
AA, COX
5lipooxygenase
C4, D4, E4

montelukast

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13
Q

__ releases AA from lipids
Thromboxane A2/PGI2 products of __ pathway of AA metabolism
both blocked by ___

SCC of h/n occurs in ventral __ and floor of __, __ lip
metastasizes to __/__ LN, L/L/B

A

Phospholipase A2
COX, NSAIDS

tongue, mouth, lower
Regional, mediastinal, lung/liver/bones

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14
Q

difference in phenotype in pt w same mutation is known as variable __
Marfan syndrome due to mutation in __ gene for fibrillin
important in producing __ fibers

nitrates directly __ vasc smooth muscle
results in systemic _ and dec peripheral __
lowers E__ and P__ and reduces myocardial __ by dec wall stress
also reduce A___

drop in blood pressure results in reflex ___

BB/CCB dec __ and __

A

expressivity
FBN1
elastic

relax
VenoD, venous return
EDV, preload, oxygen demand
afterload

tachycardia

HR/contractility

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15
Q

CFTR function varies from tissue/tissue bc of __ funcionaltiy of CFTR

in sweat glands, CFTR works to reabsorb __/__
if mutated, reabsorption is __ so sweat has high Na/Cl

in intestinal/res epithelium, CFTR channel normally secretes __ and stops __ reabsorption
w mutation, this is opposite, so thick/viscous sec are low in __/__

A

tissue specific

Cl, Na
dec

Cl, Na

Na/Cl

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16
Q

__ is disorder characterized by end organ resistance to PTH
defect in PTH __ and downstream __
pt will have low __/__ and high __

PT1a aka __ hereditary osteodystrophy is AD due to mutation in __ gene
encodes for alpha subunit of __
pt will have short __/__/__
also have end organ resistance to __/__/__

MTC occurs from _ producing parafollicular C cells of thyroid gland
calcitonin is __ but Ca is __

A

Pseudohypoparathyroid
receptor, signalling paths
PTH, Ca, Phos

Albright
GNAS1
G protein
stature/MC/MT
LH/FSH/TSH

calcitonin
high, normal

17
Q

mature mRNA hydridizied to DNA shows loops of DNA indicate area coding for __
have been __ during processing

posttranscriptional processing
__ capping, adds __ to 5’ end of primary mRNA via 5’-5’ linkage
stabilize mRNA in __

PolyA __ via __ polymerase
stabilizes __ end in cytosol

Splicing of __ from pre-MRNA to form a __ product
occurs via __

A

introns, spliced

5’, 7methylguanosne
cytosol

tai, polyA
3’

introns, mature
snRPs

18
Q

__ is mutation in same gene locus w similar phenotypes
ie __ dz

__ is mutation of different genes w similar phenotypes

__ is mutation in same gene w diffferent phenotyeps

__ is interaction bw multiple genes that make new/mask phenotype

__ is occurrence of multiple, unrelated phenotypic manifestations in different organs
ie __ dz

__ refers to varying severity of phenotypic mutation

A

allelic heterogeneity
B thalassemia

genetic heterogeneity

phenotypic heterogeneity

epistasis

pleiotropy
marfans

expressivity

19
Q

__ D4 is synthesized by eosinophils/mast cells
fxn in B__ and bronchial __ secretion
upregulated in __
blocked by M__

___ caused by inc GI uptake of iron
see __ disease/hepatomegaly, __ destruction and DM, arhtropathy/___, __ hormone def
inc risk of __ carcinoma
__/__ cardiomyopathy

A

leukotriene
bronchoconstriction, mucus
asthma
montelukast

Hemochromatosis
liver, panc islet, arthritis, pituitary
HC
restrictive/dilated

20
Q

P__ is partial albinism and W__ syndrome caused by def in __ prolif/migration
seen as areas of __ at birth

diffuse hypopigmentation/albinism due to absent __ enzyme

copper is low in __ dz
abnormal pigmented, kinky __ and __

A

piealbinism, Waardenburg, melanocyte

tyrosinase
Menke
hair/iris

21
Q

portal venous system is __ so w portal HTN, blood can flow from liver to __ resulting in splenomegaly

serolgoic test that identifies serum antibody against target antigen is __ test

known __ is fixed to well surface
patient __ is added, and antigen spec ab bind/fix in well
plate is __ to remove unbound ab
anti__ Ig is coupled to substrate modifying enzme like __
binds to antigen bound __ in well and washed

substrate modified by added __ is added to form detectable signal

A

valveless, spleen

ELISA
antigen
serum
washed
human, peroxidase
antibodies

enzyme

22
Q

pt w prolonged erythema and yellow crust has __
usually due to __/__
w S aureus, __ may form due to toxins aka __ impetigo

bacteria can be resitant to drug via formation of __ pumps
most ab cross bacterial membranes __, so efflux pumping req energy
bcteria couple efflux by moving __ against the conc gradient

when H added to media, gradient is __ and drug pumps inhibited

A

impetigo
Staph aureus, Group A strep
bullae, bullous

drug efflux
passively
H

destroyed

23
Q

__ is AD do caused by GoF __ in FGFR3
normally inhibs __ proliferation
becomes active, restricting ___ in growth plate cartilage
prevents __ ossification

pt presents w __ digits/extremities
macrocephaly and midface __ w frontal __
inc risk of __ due to bone/CT abnorms

usually have LE __/__ w activity

A

achondroplasia, point mutation
cartilage
chondrocyte
endochondral

short
hypoplasia, bossing
spinal stenosis

weak/paralysis

24
Q

__ is a teratogen in preg
may see __ anomalies, depressed __ bridge, __/__ anomalies as well

__ is mutated in XLA
nevessary for maturation of __
if absent, b cells cannot leave __
found on __ chromo

CF, EDS, OI found on chromosome __

PKD/TS found on chromosome __

MODY found on chromosome __

A

isotretinoin
ear, nasal, cardiac/neruo

BTK
B cells
bone marrow
X

7

16

20

25
bone marrow transplant begins w __ to destroy host bone marrow HLA matched __ cells infused IV stem cells travel to BM via __ signals all hematopoetic stem cells are __ derived thus __ cells can be present in female
radiation donor HSC homing donor male
26
translation of mRNA begins in __ mRNA signaled for this provess via __ terminal signal sequence protein is __ in cytosol, and recognized by __ recognition particles stops translation, and directs ribosome to __ there, SRP is released and polypeptide produced via RER if there is no __ signal sequence, this mRNA will accumulate in the __
cytosol N translated, signal RER hydrophobic, cytosol
27
after entering RER, signal peptidase cleaves __ region from PP protein undergoes folding/glycosylation/coupling in __ then exported to __ for modification and release ``` MSUD is deficiency in branched chain __ requires __ as cofactor I/L/V accumulate and cause __ toxicity sx include poor __ and V tx w __ restriction ```
signal RER golgi ``` a ketoacid dehydro thiamine isoleucine, leucine, valine CNS feeding, vomit protein ```
28
__ is cofactor for Acetyl coa carboxylase/pyruvate carbxoylase __ is important in single C transfers for THF synthesis of purines/thymine, AA
biotin folate
29
___ is common do in SE Asia caused by loss of __ chains peripheral smear shows _/__ red cells most severe form has homozygous mutation and loss of __ genes produces Hb ___ 4 gamma chains have high affinity for __ so it is not released to tissues pt presents w ___ and death
A thalassemia globin micro/hypo 4 alpha globin genes barts O2 hydrops fetalis
30
Howell jolly bodies can be seen w __/__ disease __ is AD do w spherocytes pt presents w J/H w chronic hemolysis pt w 1 or 2 mutations in alpha globin have __ pt w 3 mutations has __ disease presents w chronic __
splenic SC HS, jaudince, HSM alpha thalassemia minor Hb H hemolytic anemia
31
seminiferous tubules/epidydimis require high conc of __ for spermatogenesis/sperm maturation to occur normally maintained by __ released by sertoli cells binds T/DHT to make them less __ and prevent loss look for sertoli cell dysfxn in pt w normal _/_ levels in serum
testosterone ABG lipophilic Testosterone/LH
32
Glucagon binds to __ receptors in hepatocytes to activate Gs this upregs __ and __ prodxn PKA released, activating enzymes for glycolysis (phosphorylase kinase, glyocgen phosphorylase) and ___ (pryuvtae carbxoylase) __ produces similar effect binds Gprotein coupled __ receptors activates Gs- __ second messenger system and inc __/__ Insulin acts via intrinsic __ activity releases __ pathway for glycogen synthase/inhibits gluco
Gprotein AC, cAMP gluconeogenesis epi, B2 ac, glycogenolysis/gluco RTK IP3
33
Hyperhidrosis carried out by __ nervous system particularly in P/S/A symp postgang __ neurons innervate eccrine/apocrine sweat glands can tx w anticholinergic O local anticholinergic injection B__ toxin surgical s__ for axilla focusing on thoracic __ of T2 __ provides SNS info to H/N, tarsal, lacrimal gland, radial muscle of iris/salivary glands greater/lesser/least thoracic splanchnic nerves provide SNS pregang neurons to __
symp palms, sole, axillae cholingergic oxybutinin botulinum sympathectomy, symp trunk Superior cervical ganglion ab viscera
34
red safranin O used to visualize __, __ granules and mucin articular cartilage found in __ of joints __ form, type __ collagen
collagen, mast cell bone hyaline, 2
35
in embryo development, __ attaches to gonads in both sexes shortening leads to pulling of gonads into __/__ in males, gubernaculum becomes __ ligament in scrotal floor in females, inferior portion becomes __lig in inguinal canal to labia majora superior portion is __ lig connecting ovary to uterus __ lig connects ovary to pelvis __ lig connects uterus to pelvis
gubernaculum pelvis/scrotum scrotal round ligament proper ovarian suspensory broad
36
episodic HA/palps/severe HTN has __ excess could be P__ from chromaffin cells of organ of zuckerlandl very similar to __ Epi/norepi become __/__ via COMT broken down to __ by MAO urinary __ is elevated in androgen secreting tumor
``` catecholamine paraganglioma pheo metanephrine/normetanephrine VMA ``` 17 ketosteroid
37
pt w PE/DVT has __ inc ventilation/HR __ results, dec CO2 pt gets respiratory __ w hypoxemia
hypoxemia hyperventilation alkalosis