Test 1 SG

Question 1

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

Answer 1

Prophase

Question 2

The first polar body contains

Answer 2

23 chromosomes

Question 3

3. Development and proliferation of the notochord induces:

Answer 3

neural plate formation

Question 4

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

Answer 4

prechordial plate

Question 5

5. The oropharyngeal membrane contains mesoderm: T or F

Answer 5

Fasle

Question 6

6. Cloacal membrane eventually becomes the:

Answer 6

Anus

Question 7

7. Which produce testosterone in adolescent males?

Answer 7

Leydig

Question 8

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

Answer 8

Corona radiata

Question 9

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

Answer 9

False

Question 10

10. The first polar body is formed after the:

Answer 10

first meiotic division

Question 11

11. Ovarian follicular cells secrete mostly:

Answer 11

Estrogen

Question 12

12. The second polar body contains:

Answer 12

small amounts of cytoplasm

Question 13

13. According to Albertus Magnus, what controls conception?

Answer 13

Saturn

Question 14

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

Answer 14

one x chromosome

Question 15

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

Answer 15

primitive groove

Question 16

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

Answer 16

they would have male offspring

Question 17

17. Neural crest cells are the premordium of:

Answer 17

Spinal ganglia

Question 18

Fusion of neural folds form the

Answer 18

Neural tube

Question 19

Fusion of lateral folds form

Answer 19

Brain

Question 20

Notochord becomes part of the following in neonate

Answer 20

Vertebral bodies

Question 21

If fertilization occurs in corpus lutea

Answer 21

Produces progesterone to support the pregnancy

Question 22

Which hormone stimulates testosterone production in males

Answer 22

Lutenizing hormone (LH)

Question 23

Each somite is innervated by how many spinal nerves

Answer 23

1

Question 24

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

Answer 24

Cranial

Question 25

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

Answer 25

Celom

Question 26

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

Answer 26

Epaxial part of myotome

Question 27

One spermatid ultimately yields how many mature sperm

Answer 27

1

Question 28

After fertilization, the zona pellucida becomes

Answer 28

Zona rxn

Question 29

The inner cell mass of a blastomere becomes the

Answer 29

Future embryo

Question 30

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

Answer 30

Ischemic

Question 31

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

Answer 31

Hypoblast

Question 32

As the notochord grows new cells are added to the caudal end

T or F

Answer 32

False

Question 33

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

Answer 33

Neural groove

Question 34

The neural crest cells are located between what and what

Answer 34

Neural tube and surface ectoderm

Question 35

Each somite is associated with how many dermatomes

Answer 35

2

Question 36

Epaxial muscles are innervated by what

Answer 36

Dorsal primary rami

Question 37

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

Answer 37

Somatopleure

Question 38

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

Answer 38

Inferior

Question 39

Secondary villi have a core of what that develop blood vessels

Answer 39

Mesenchyme

Question 40

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

Answer 40

False

Question 41

The notochord is what to the neural tube

Answer 41

Deep

Question 42

Somites develop from what part of the mesoderm?

Answer 42

Paraxial

Question 43

Which part of the somite becomes the axial skeleton

Answer 43

Sclerotome

Question 44

The hypaxial portion of themyotome develops what muscles

Answer 44

Superficial neck

Question 45

One oogonia can eventually become how many secondary oocytes

Answer 45

1

Question 46

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

Answer 46

1

Question 47

The synchytiotrophoblast produces what that helps to maintain the pregnancy?

Answer 47

HCG

Question 48

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

Answer 48

False

Question 49

Meiosis produces a cell with how many chromosomes?

Answer 49

23

Question 50

Gonadotropin releasing hormone is produced where

Answer 50

Hypothalamus