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Flashcards in Test 1 SG Deck (50):
1

1. What type of meiotic division does the primary oocyte stop during the prenatal period (prior to puberty)?

Prophase

2

The first polar body contains

23 chromosomes

3

3. Development and proliferation of the notochord induces:

neural plate formation

4

4. The notochordal process grows cranially from the primitive pit until it reaches the _________ and stops:

prechordial plate

5

5. The oropharyngeal membrane contains mesoderm: T or F

Fasle

6

6. Cloacal membrane eventually becomes the:

Anus

7

7. Which produce testosterone in adolescent males?

Leydig

8

8. After ovulation the secondary oocyte is surrounded by a layer of follicular cells called:

Corona radiata

9

9. Oogonia are present in 21 year old women? T or F

False

10

10. The first polar body is formed after the:

first meiotic division

11

11. Ovarian follicular cells secrete mostly:

Estrogen

12

12. The second polar body contains:

small amounts of cytoplasm

13

13. According to Albertus Magnus, what controls conception?

Saturn

14

14. A primary oocyte contains 22 autosomes and the following:

one x chromosome

15

15. As the bilaminar disk becomes a trilaminar disk, epiblast cells migrate through the:

primitive groove

16

16. Because of Aristotle’s teaching, French Noblemen had their left testicle removed to ensure:

they would have male offspring

17

17. Neural crest cells are the premordium of:

Spinal ganglia

18

Fusion of neural folds form the

Neural tube

19

Fusion of lateral folds form

Brain

20

Notochord becomes part of the following in neonate

Vertebral bodies

21

If fertilization occurs in corpus lutea

Produces progesterone to support the pregnancy

22

Which hormone stimulates testosterone production in males

Lutenizing hormone (LH)

23

Each somite is innervated by how many spinal nerves

1

24

The cardiogenic area in the trilaminar disk is ____ to the oropharyngeal membrane

Cranial

25

The fluid filled cavities that develop in the lateral embryonic mesoderm are called

Celom

26

The muscels of the back are derived from what part of the somite

Epaxial part of myotome

27

One spermatid ultimately yields how many mature sperm

1

28

After fertilization, the zona pellucida becomes

Zona rxn

29

The inner cell mass of a blastomere becomes the

Future embryo

30

If pregnancy occurs, what phase of the menstral cycle does not occur?

Ischemic

31

The prechordial plate is a thickening of the cells on the cranial end of the ____ layer of the embryoblast

Hypoblast

32

As the notochord grows new cells are added to the caudal end
T or F

False

33

The neural plate invaginates beginning on day 18, this forms the

Neural groove

34

The neural crest cells are located between what and what

Neural tube and surface ectoderm

35

Each somite is associated with how many dermatomes

2

36

Epaxial muscles are innervated by what

Dorsal primary rami

37

The lateral body walls are formed from the ectoderm and what?

Somatopleure

38

During the initial stages of cardiac development, the atria are what to the ventricles

Inferior

39

Secondary villi have a core of what that develop blood vessels

Mesenchyme

40

Neural crest cells normally seperate from the overlying ectoderm
T or F

False

41

The notochord is what to the neural tube

Deep

42

Somites develop from what part of the mesoderm?

Paraxial

43

Which part of the somite becomes the axial skeleton

Sclerotome

44

The hypaxial portion of themyotome develops what muscles

Superficial neck

45

One oogonia can eventually become how many secondary oocytes

1

46

The corona radate surrounding an unfertilized secondary oocyte contains how mnay polar bodies

1

47

The synchytiotrophoblast produces what that helps to maintain the pregnancy?

HCG

48

Cell division that is occuring in the arm of a 20 y/o female is called meiosis
T or F

False

49

Meiosis produces a cell with how many chromosomes?

23

50

Gonadotropin releasing hormone is produced where

Hypothalamus