Embryology Year 1

Question 0

Pulmonary Trunk

Answer 0

Truncus Arteriosus

Question 1

Ascending Aorta

Answer 1

Truncus Arteriosus

Question 2

Trabeculated (rough) Left Ventricle

Answer 2

Primitive Ventricle

Question 3

Trabeculated (rough) Right Ventricle

Answer 3

Primitive Ventricle

Question 4

Right Trabeculated (rough) Atrium

Answer 4

Primitive Atrium (right part)

Question 5

Left Trabeculated (rough) Atrium

Answer 5

Primitive Atrium (left part)

Question 6

Right Smooth Atrium

Answer 6

Right Sinus Venosus

Question 7

Coronary Sinus

Answer 7

Left Sinus Venosus

Question 8

Left Smooth Atrium

Answer 8

Pulmonary Veins

Question 9

Interatrial Septum

Answer 9

Septum Secundum (right) and Septum Primum (left)

Question 10

Smooth Left Ventricle (outflow tracts)

Answer 10

Bulbus Cordis

Question 11

Smooth Right Ventricle (outflow tracts)

Answer 11

Bulbus Cordis

Question 12

Pericardial Cavity

Answer 12

Coelom

Question 13

2 Pleural Cavities

Answer 13

Coelom

Question 14

Abdominal Cavity

Answer 14

Coelom

Question 15

Central Tendon of Diaphragm

Answer 15

Septum Transversum

Question 16

Dorso-Lateral Diaphragm

Answer 16

2 pleuroperitoneal folds

Question 17

Thin dorsal part of diaphragm

Answer 17

Mesoesophagus (2 sheets of splanchnic mesoderm)

Question 18

Adult kidney

Answer 18

Metanephros (metanephrogenic mesenchyme)

Question 19

Rectum

Answer 19

Dorsal cloaca

Question 20

Urinary bladder (part)

Answer 20

Ventral cloaca (urogenital sinus, ventral to urorectal fold)

Question 21

Urethra (part)

Answer 21

Ventral cloaca (urogenital sinus, ventral to urorectal fold)

Question 22

Base of bladder

Answer 22

Distal mesonephric ducts and ureters

Question 23

Collecting ducts

Answer 23

Uretic bud

Question 24

Calyces

Answer 24

Uretic bud

Question 25

Pelvices

Answer 25

Uretic bud

Question 26

Vas deferens

Answer 26

Mesonephric ducts

Question 27

2 Fallopian tubes

Answer 27

2 Müllerian ducts

Question 28

Uterus

Answer 28

Fusion of Müllerian ducts

Question 29

Upper ⅔ of vagina

Answer 29

Fusion of Müllerian ducts

Question 30

Lower ⅓ of vagina

Answer 30

Sinovaginal bulbs (from base of urogenital sinus)

Question 31

Clitoris/glans of penis/navicular fossa

Answer 31

Genital tubercle

Question 32

Labia minor/shaft of penis and penile urethra

Answer 32

Urogenital folds

Question 33

Labia major/scrotum

Answer 33

Labioscrotal swellings

Question 34

Capillaries/glomeruli

Answer 34

Metanephros

Question 35

Membranous interventricular septum (superior part)

Answer 35

Spiral septum
Endocardial cushions
Muscular interventricular septum

Question 36

Aorta and pulmonary trunk

Answer 36

Truncus Arteriosus divided by spiral septum

Question 37

Rough walled left atrial appendage

Answer 37

Embryonic atrium

Question 38

Embryonic shunts

Answer 38

Ductus Arteriosus
Ductus Venosus
Foramen ovale

Question 39

Embryology of the lungs

Answer 39

Digestive tract (endoderm) -> laryngotracheal groove -> lung bud -> left and right bronchial buds -> continue splitting

Question 40

Visceral pleura

Answer 40

Splanchnic mesoderm

Question 41

Parietal pleura

Answer 41

Somatic mesoderm

Question 42

Periods of lung development

Answer 42

Pseudoglandular (weeks 8-16)
Canalicular (weeks 17-26)
Terminal sacs (weeks 26 to birth)
Formation of alveoli (week 32 to 8 years)

Question 43

Rete testis

Answer 43

Mesonephric tubules

Question 44

Urogenital ridges

Answer 44

Intermediate mesoderm

Gives rise to urinary system and internal genital system

Question 45

Ureter

Answer 45

Uretic buds elongate to form metanephric ducts -> ureters