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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
Funny current is slow build up due to influx of?
Sodium
26
Relative refract period
can get a "relative" reaction but not from normal conditions
27
effective refract period
NO contraction can happen
28
What is SERCA
Ca pump in SR that req ATP
29
Phospholamban
In SR unphosphorylated inhibits Ca uptake phosphorylated makes SERCA more active, less Ca out Causes STRONGER next contraction
30
B1 andrenergic signaling does what?
Catecholamines release and cause stronger contractions due to more Ca. Also increase phospholamban, so they increase relaxation too. NET EFFECT increase Heart rate
31
Glycosides (digoxin, ouabain) do what?
Block Na K pump. Na stays inside and makes more calcium stay inside the cell
32
Smooth part or Right ventricle?
Infundibulum Conus Arteriosus
33
Smooth walled left ventricle portion?
aortic vestibule
34
Post Interventricular branch off of the RCA supplies?
1/3 of interventricular septum
35
Ant interventricular branch from LCA
Both ventricles and ant 2/3 of interventricular septum
36
Left dominant heart supplies?
All of the septum. At risk if blocked
37
SA location
RA in superior cristae terminalis
38
AV location
inferior part of interatrial septum in RA
39
Hear tricuspid?
left 5th intercostal close to sternum
40
Hear mitral?
over apex left 5th intercostal
41
Hear pulmonary?
medial end left 2nd intercostal space
42
Hear aortic?
medial end right 2nd intercostal space
43
Where do aortic arches originate from
truncus arteriosus
44
What does the bulbis cordis become?
smooth parts of left and right ventricle
45
smooth part of right atrium forms from?
right horn sinus venosus
46
Coronary sinus forms from?
sinus venosus
47
Tetrology of Fallot? Results from unequal division of?
Interventric septal defect Hypertrophy of RV Over-riding aorta Pulmonary stenosis Bulbus cordis
48
What passes through T8?
Inf. Vena Cava R. phrenic Called caval opening
49
What passes through T10?
Esophagus R and L Vagus Esophageal Hiatus
50
What passes through T12?
Descending Aorta Thoracic Duct Azygous Vein Aortic hiatus

SF3 Exam 1 (2 decks)

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