Embryo Test 4 8

Front 1

1. Muscles of the pharynx
2. Anterior belly of the digastric muscle
3. Muscles of mastication
4. Hyoid bone
5. Innervated by cranial nerve X
6. Bones of the middle ear
7. Oral part of the tongue
8. Innervated by cranial nerve VII
A. arch I
B. arch II
C. arch III
D. arch IV
E. arch VI
AB. arches I and II
AC. arches II and III
AD. arches IV and VI

Back 1

1. Muscles of the pharynx D. arch IV

2. Anterior belly of the digastric muscle A. arch I

3. Muscles of mastication A. arch I

4. Hyoid bone AC. arches II and III
5. Innervated by cranial nerve X AD. arches IV and VI??
D arch IV

6. Bones of the middle ear AB. arches I and II

7. Oral part of the tongue A. arch I

8. Innervated by cranial nerve VII B. arch II

Front 2

9. superior parathyroid gland
10. palatine tonsil
11. thymus
12. ultimobranchial body
13. middle ear cavity


A. pouch 1
B. pouch 2
C. pouch 3
D. pouch 4
E. pouch 5

Back 2

9. superior parathyroid gland D. pouch 4

10. palatine tonsil B. pouch 2

11. thymus C. pouch 3? B pouch 2

12. ultimobranchial body E. pouch 5? C pouch 3

13. middle ear cavity
A. pouch 1

Front 3

14. Which of the following contribute to the innervation of the tongue?
A. CN V
B. CN VII
C. CN VIII
D. A and B
E. A, B, and C

Back 3

D. A and B

Front 4

15. The copula contributes to the formation of the root of the tongue.
A. true B. false

Back 4

B. false

Front 5

16. The thyroid gland develops from an outgrowth of pharyngeal pouch 3.
A. true B. false

Back 5

B. false?

True

Front 6

17. The intermaxillary segment develops from the:
A. medial nasal prominences
B. lateral nasal prominences
C. both
D. neither

Back 6

A. medial nasal prominences

Front 7

18. The nasolacrimal groove develops between the:
A. lateral and medial nasal prominences
B. medial nasal prominence and intermaxillary segment
C. lateral nasal prominence and maxillary prominence
D. maxillary and mandibular prominences

Back 7

C. lateral nasal prominence and maxillary prominence

Front 8

19. The palatine shelves are outgrowths of arch I.
A. true B. false

Back 8

A. true

Front 9

20. The nasal placodes develop within the:
A. maxillary prominence
B. frontonasal prominence
C. both
D. neither

Back 9

B. frontonasal prominence

Front 10

21. Remnants of pharyngeal cleft _____ are normally present in the adult.
A. one
B. two
C. both
D. neither

Back 10

A. one

Front 11

22. The laryngotracheal diverticulum develops into the:
A. larynx
B. trachea
C. both
D. neither

Back 11

C. both

Front 12

23. The secondary bronchii determine the number of lobes that develop in each lung.
A. true B. false

Back 12

A. true

Front 13

24. The presence of sufficient surfactant is a factor in the survival of premature babies.
A. true B. false

Back 13

A. true

Front 14

25. The lungs are usually considered to be mature at about:
A. fetal month 4
B. fetal month 7
C. the time of birth
D. age 8

Back 14

D. age 8

Front 15

26. Which of the following are examples of first arch syndromes?
A. Treacher Collins
B. Pierre Robin
C. DiGeorge
D. A and B
E. A, B, and C

Back 15

D. A and B

Front 16

27. Branchial cysts are remnants of the thyroglossal duct.
A. true B. false

Back 16

B. false

Front 17

28. Failure of the palatine shelves to fuse results in a:
A. posterior cleft palate
B. anterior cleft palate
C. either
D. neither

Back 17

A. posterior cleft palate

Front 18

29. Which of the following results in disruption of the nasolacrimal duct?
A. median facial cleft
B. lateral facial cleft
C. oblique facial cleft
D. anterior facial cleft.

Back 18

C. oblique facial cleft

Front 19

30. Treacher Collins syndrome affects development of the:
A. eyelids
B. ears
C. both
D. neither

Back 19

C. both

Front 20

31. The islets of Langerhans are derived from the:
A. ectoderm
B. endoderm
C. mesoderm

Back 20

B. endoderm

Front 21

32. The ileum is derived from the:
A. midgut
B. hindgut
C. both
D. neither

Back 21

A. midgut

Front 22

33. The duodenum is derived from the:
A. foregut
B. midgut
C. both
D. neither

Back 22

C. both

Front 23

34. Most of the liver is derived from the dorsal liver bud.
A. true B. false

Back 23

B. false

Front 24

35. Branches of the ______ supply blood to the jejunum.
A. celiac trunk
B. superior mesenteric artery
C. inferior mesenteric artery

Back 24

B. superior mesenteric artery

Front 25

36. The cloaca is found in the:
A. foregut
B. midgut
C. hindgut
D. foregut and midgut
E. midgut and hindgut

Back 25

C. hindgut

Front 26

37. The greater curvature of the stomach develops along the ______wall of the foregut.
A. dorsal
B. ventral

Back 26

A. dorsal

Front 27

38. The developing liver remains attached to the duodenum through the bile duct.
A. true B. false

Back 27

A. true

Front 28

39. Which of the following is derived from the foregut?
A. pancreas
B. liver
C. both
D. neither

Back 28

C. both

Front 29

40. Ectopic pancreatic tissue is frequently found in Meckel’s diverticulum.
A. true B. false

Back 29

A. true

Front 30

41. The gonad develops along gender-specific pathways in response to testosterone.
A. true B. false

Back 30

B. false

Front 31

42. Which of the following produce MIS?
A. Leydig cells
B. Sertoli cells
C. both
D. neither

Back 31

B. Sertoli cells

Front 32

43. The external genitalia of the male develop in response to dihydrotestosterone.
A. true B. false

Back 32

A. true

Front 33

44. The epithelial lining of the urinary bladder is derived from:
A. ectoderm
B. mesoderm
C. endoderm

Back 33

C. endoderm

Front 34

45. Which of the following develop from the mesonephric duct?
A. epididymis
B. vas deferens
C. both
D. neither

Back 34

C. both

Front 35

46. The urogenital sinus develops into the urethra in:
A. males
B. females
C. both
D. neither

Back 35

C. both