Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Buzzwords Step 1 > Embryology > Flashcards

Embryology Flashcards

1
Q

What structure is derived from the prochordal plate?

A

Mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the only ORGAN supplied by the FOREGUT artery that is of MESODERMAL origin?

A

Spleen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In which direction and how far does the gut rotate?

A

counterclockwise 270 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What structure connects the primitive gut to the yolk sac?

A

The yolk stalk (vitelline duct)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the artery of the embryonic foregut?

A

Celiac artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When does the primitive gut herniate out of the embryo?

When does it return back in to the embryo?

A

6 weeks

10 weeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What 2 pathologic conditions occur when the gut does not return to the embryo?

A

Omphalocele and gastroschisis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

around what structure does the midgut rotate?

A

Superior mesenteric artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What 3 things cause the indifferent gonad to become a testis and where do they come from?

A
  1. Testis-determining factor (TDF) from the short arm of the Y chromosome
  2. Mullerian inhibiting factor (MIF) from sertoli cells
  3. Testosterone from leydig cells
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where does the embryologic foregut end?

A

At the first part of the duodenum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the artery of the embryonic hindgut?

A

inferior mesenteric artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what 3 embryonic cell layers form the chorion

A
  1. cytotrophoblast
  2. Syncytiotrophoblast
  3. Extraembryonic mesoderm
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which neuropore closes last?

A

Caudal - and it is the first to open too

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the artery of the embryonic midgut

A

Superior mesenteric artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

From where are nephrons derived embryonically

A

metanephros

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the 5 derivatives of the ventral mesentery?

A

1 falciform ligament
2. hepatoduodenal ligament
3. hepatogastric ligament
4 and 5. Coronary and triangular ligaments of the liver
All else is dervied from the dorsal mesentery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When do the septum primum and the septum secundum of the heart fuse?

A

After birth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The cerebral cortex is a derivative of what?

A

The telencephalon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The umbilical vein of the embryo becomes ___ adult structure

A

Ligamentum teres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The ductus venosus of the embryo becomes ___ adult structure

A

Ligamentum venosum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The foramen ovale of the embryo becomes ___ adult structure

A

Fossa ovale

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

The ductus arteriosus of the embryo becomes ___ adult structure

A

Ligamentum arteriosum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

The umbilical artery of the embryo becomes ___ adult structure

A

Medial umbilical ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Where does the hindgut end?

A

Superior portion of the anal canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Where does the midgut end?
at the right 2/3 of the transverse colon
26
from where is the tongue musculature derived?
occipital somaties
27
What 2 brachial arches contribute to the formation of the ANTERIOR 2/3 of the tongue?
first and some of the second
28
what are the 2 fourth pharyngeal pouch derivatives
Superior parathyroid glands and the ultimobranchial body
29
what 2 structures are derived from the fourth aortic arch?
arch of the aorta and the R subclavian artery
30
What adult structures are derived from preotic somites?
muscles of the internal eye
31
What structure is derived from the first pharyngeal pouch?
The middle ear
32
What 2 branchial arches contribute to the POSTERIOR 2/3 of the tongue?
third and part of fourth
33
What are the 2 third pharyngeal pouch derivatives?
inferior parathyroid glands and the thymus
34
What structure is derived from the first aortic arch?
Maxillary artery
35
from what are the urinary bladder and the urethra derived?
urogenital sinus
36
from what are the pumonary trunk and the ascending aorta derived?
Truncus arteriosum
37
What disorder will result when there is failure of the urachus to close, causing a leakage of urine out of the umbilicus?
Urachal fistula
38
The common carotid and internal carotid arteries are derivatives of what embryonic structure?
Third aortic arch
39
The palatine tonsils are derived from what embryonic structure?
second pharyngeal pouch
40
What are the sixth aortic arch derivatives?
R and L pulmonary arteries and the ductus arteriosus
41
The stapedial artery is derived from what?
Second aortic arch
42
The mesonephric ducts contribute to what renal structures?
Collecting ducts, calyx, renal pelvis, and ureters
43
Of what embryonic structure is the coronary sinus a derivative?
The L horn of the sinus venosus
44
What CN is assoc with the FIRST pharyngeal arch?
CN V
45
What CN is assoc with the SECOND pharyngeal arch?
CN VII
46
What CN is assoc with the THIRD pharyngeal arch?
CN IX
47
What CN is assoc with the FOURTH pharyngeal arch?
CN X
48
What CN is assoc with the FIFTH pharyngeal arch?
None, it degenerates
49
What CN is assoc with the SIXTH pharyngeal arch?
CN X
50
From where is the external auditory meatus derived?
First pharyngeal groove
51
From where is the smooth portion of the R atrium derived?
R horn of the sinus venosus
52
Meckel's diverticulum is a remnant of what embryonic structure?
Vitelline duct (yolk sac)
53
Pons and cerebelum are derived from what portion of the embryonic neural tissue?
Metencephalon
54
The medulla is a derivative of what portion of the embryonic neural tissue?
Myelencephalon
55
What structure "tells" the overlying cells to begin neurulation?
Notochord
56
What structure splits the cloacal membrane, resulting in the formation of the perineum
Urorectal septum
57
In the adult, the thoracic veins are derived from what structure?
The cardinal veins
58
The GI tract and abdominal veins are derived from what structure?
VItelline veins
59
From what is the thyroid gland derived?
Floor of the endoderm (the posterior aspect of the tongue)
60
The thalamus and its related structures are derivatives of what?
The diencephalon

Buzzwords Step 1 (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions