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SF3 Exam 1 > SF3 Exm 1 EMBRY > Flashcards

SF3 Exm 1 EMBRY Flashcards

1
Q

Aortic Arch 1

A

Degenerates

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2
Q

Aortic Arch 2

A

Degenerates

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3
Q

Aortic Arch 3

A

Proximal- Common carotid Artery

Distal- Internal carotid artery/external carotid artery

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4
Q

Aortic Arch 4

A

Left- Arch of aorta w/ aortic sac and dorsal aorta

Right- R subclavian artery

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5
Q

Aortic Arch 5

A

Degenerates

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6
Q

Aortic Arch 6

A

Proximal- Left and right pulmonary arteries

Distal- Degen on right but makes DUCTUS Arteriosis in left

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7
Q

Where does the laryngeal vagus nerve on the right side go?

A

6 and 5 degen, so it hooks up to 4 around the right subclavian artery

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8
Q

Where does the laryngeal on the left side go?

A

6 forms the ligamentum arteriosum once born, so it hooks the ligament and arch of aorta

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9
Q

What do the right and left ant. cardinal veins make?

A

Contribute to Internal Jugular vein

Anastomoses makes left braciocephalic vein

Right ant vein makes right braciocephalic

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10
Q

What forms the Sup Vena Cava?

A

Right ant cardinal vein and right common cardinal vein

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11
Q

Left umbilical vein

A

Ligamentum teres hepatis

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12
Q

Ductus venosus

A

Ligamentum venosum

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13
Q

Foramen ovale

A

Fossa ovalis

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14
Q

Ductus arteriosus

A

Ligamentum arteriosum

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15
Q

Umbilical artery

A

Internal iliac a.
Sup vesical a.
Medial umbilical ligament

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16
Q

What transports oxygenated blood in fetus?

A

Left umbilical vein

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17
Q

absence of what causes foramen of bochdalek

A

pleuroperitoneal membranne closure

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18
Q

what forms the central tendon of the diaphragm

A

septum transversum

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19
Q

what forms the legs of the diaphragm

A

dorsal mesentary

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20
Q

what makes the mucsles of the diaphragm

A

myoblasts from somatic mesoderm

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21
Q

What fuse seal the diagphragm off

A

pleuroperitoneal membranes, dorsal mesentaries, and septum transversum

22
Q

relax smooth muscle?

A

block Ca

Open K+ channels

Up cGMP

Up cAMP

23
Q

cause smooth muscle contraction?

A

Open Ca

Open SR

Inhibit MLCP

24
Q

Contraction of cardiac muscle requires calcium entering and interacting with?

A

RyR2 in SR to release more Ca

25
Q

Funny current is slow build up due to influx of?

A

Sodium

26
Q

Relative refract period

A

can get a “relative” reaction but not from normal conditions

27
Q

effective refract period

A

NO contraction can happen

28
Q

What is SERCA

A

Ca pump in SR that req ATP

29
Q

Phospholamban

A

In SR

unphosphorylated inhibits Ca uptake
phosphorylated makes SERCA more active, less Ca out

Causes STRONGER next contraction

30
Q

B1 andrenergic signaling does what?

A

Catecholamines release and cause stronger contractions due to more Ca.

Also increase phospholamban, so they increase relaxation too.

NET EFFECT increase Heart rate

31
Q

Glycosides (digoxin, ouabain) do what?

A

Block Na K pump. Na stays inside and makes more calcium stay inside the cell

32
Q

Smooth part or Right ventricle?

A

Infundibulum

Conus Arteriosus

33
Q

Smooth walled left ventricle portion?

A

aortic vestibule

34
Q

Post Interventricular branch off of the RCA supplies?

A

1/3 of interventricular septum

35
Q

Ant interventricular branch from LCA

A

Both ventricles and ant 2/3 of interventricular septum

36
Q

Left dominant heart supplies?

A

All of the septum. At risk if blocked

37
Q

SA location

A

RA in superior cristae terminalis

38
Q

AV location

A

inferior part of interatrial septum in RA

39
Q

Hear tricuspid?

A

left 5th intercostal close to sternum

40
Q

Hear mitral?

A

over apex left 5th intercostal

41
Q

Hear pulmonary?

A

medial end left 2nd intercostal space

42
Q

Hear aortic?

A

medial end right 2nd intercostal space

43
Q

Where do aortic arches originate from

A

truncus arteriosus

44
Q

What does the bulbis cordis become?

A

smooth parts of left and right ventricle

45
Q

smooth part of right atrium forms from?

A

right horn sinus venosus

46
Q

Coronary sinus forms from?

A

sinus venosus

47
Q

Tetrology of Fallot?

Results from unequal division of?

A

Interventric septal defect
Hypertrophy of RV
Over-riding aorta
Pulmonary stenosis

Bulbus cordis

48
Q

What passes through T8?

A

Inf. Vena Cava
R. phrenic

Called caval opening

49
Q

What passes through T10?

A

Esophagus
R and L Vagus

Esophageal Hiatus

50
Q

What passes through T12?

A

Descending Aorta
Thoracic Duct
Azygous Vein

Aortic hiatus

SF3 Exam 1 (2 decks)

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