Quiz on 2.1 & 2.4

Question 1

when gametes combine they form a

Answer 1

zygote

Question 2

cell division that makes different types of cells from another cell is called

Answer 2

differentation

Question 3

the hallow ball of cells form the zygote is the

Answer 3

blastula

Question 4

a human 10 weeks of age from conception is

Answer 4

an embryo

Question 5

the embryo will attach and gain nourishment through fingerlike projections into the uterus. this area will develop into the _______ and _______ of the fetus

Answer 5

chorion

amnion

Question 6

the embryo differentiates into three primary ______ layers

Answer 6

germ

Question 7

the future organs and systems built from the three germ lyers are its

Answer 7

derivitives

Question 8

the _________ is the first derivative of the ectoderm on the outer body of the embryo

Answer 8

epidermis

Question 9

ectoderm that has been folded in from the surface and sunk below the surface as a tube from head to tail is called the

Answer 9

neural tube

Question 10

the combination of sperm and egg cells to form a zygote is called ___________ and it usually occurs in the fallopian tube

Answer 10

fertilization

Question 11

_________ is the embedding of the developing embryo into the maternal uterine wall

Answer 11

implantation

Question 12

T/F

the embryo is the group of cells that will differentiate into a human being

Answer 12

true

Question 13

the blastula contains cells that differentiate into the embryo and the _______ and fluid

Answer 13

supporting tissue placenta

Question 14

T/F
following development of the embryo, we begin with a flat plate of cells that fold up into a tube that then folds over as a C-shaped organism

Answer 14

true

Question 15

at first, nourishment for the embryo comes from a temporary fluid-filled sac called the ______ sac

Answer 15

yolk

Question 16

the three embryonic germ layers are

Answer 16

mesoderm
ectoderm
endoderm

Question 17

ectoderm folding in along the length of the embryo is called the ________ groove and it becomes the ________ tube

Answer 17

neural

neural

Question 18

neural tube derives the ________ and ________ of the central nervous system

Answer 18

brain

spinal cord

Question 19

pairs of neural crest cells coming off the spinal cord will become the ________ nerves

Answer 19

spinal nerves

Question 20

T/F

the only place in the embryo where ectoderm will turn into mesoderm is in the tail

Answer 20

false

Question 21

the __________system consisting of the brain, spinal cord, and all the nerves derives from ectoderm

Answer 21

nervous

Question 22

the _______ and _________ systems develop from the endodermial tube

Answer 22

respiratory

digestive

Question 23

cells that bud off of the neural tube in pairs are called

Answer 23

neural crest cells

Question 24

pairs of neural crest cells coming off the brain area will become

Answer 24

cranial nerves

facial mesoderm

Question 25

the beginning portion of the developing endoderm tube is the ____ which is a wide area that forms paired pouches

Answer 25

pharynx

Question 26

the endoderm tube bulges out and bends just beyond the esophagus to form the

Answer 26

stomach

Question 27

paired bumps of mesoderm form along the sides of the neural tube and are called

Answer 27

somites

Question 28

which is not a division of the somite

Answer 28

dermis

Question 29

t/f | the circulatory system derives from paired tubes of endoderm

Answer 29

false

Question 30

paired bumps growing along either side of the embroyo's head and neck region are called the pharyngeal

Answer 30

arches

Question 31

the outside of an arch is covered with ____; the pouch is made of______

Answer 31

ectoderm | endoderm

Question 32

t/f | grooves I and IV eventually disappear

Answer 32

false

Question 33

which does not derive from pouch I?

Answer 33

external auditory meatus

Question 34

what derives the palatine tonsils?

Answer 34

pouch II

Question 35

the anterior two thirds of the tongue is called the

Answer 35

body

Question 36

t/f | the lateral lingual processes coalesce with the tuberculum impar to form the posterior tongue

Answer 36

false

Question 37

the v-shaped row of bumps on the tongue are the _____, and they mark be border between anterior and posterior tongue

Answer 37

circumvallate papillae

Question 38

which pharyngeal arch divides into the maxillary and mandibular processes

Answer 38

I

Question 39

which process does not come from the frontal process?

Answer 39

maxillary process

Question 40

t/f | the globular process becomes the philtrum and the primary palate

Answer 40

true

Question 41

two systems that give structure and movement to the body are the ______ and _______ systems, they derive from mesoderm

Answer 41

muscle | skeletal

Question 42

the tissue that is "left over" from development with no particular funtion in the adult is called

Answer 42

remnant

Question 43

the area of the embryo that will become the future mouth is called the _____. It is covered for a short time by the ______ membrane

Answer 43

stomodem | buccopharyngeal

Question 44

the cartilage of arch I is called ______ cartilage

Answer 44

meckels

Question 45

the ossicles come from the cartilage of arch I (Meckel's) and arch II, also known as _____ cartilage

Answer 45

reichets

Question 46

how many processes come together to form the tongue

Answer 46

6

Question 47

the remnant of the developing thyroid gland left on the surface of the tongue is called

Answer 47

foramen cecum

Question 48

the facial process that becomes the forehead is called the ______ process

Answer 48

frontonasal

Question 49

which processes coalesce to become the hard palate

Answer 49

primary palate

Question 50

do the two maxillary processes ever come together?

Answer 50

yes

Question 51

if facial processes do not come together properly, a _____ lip or palate may result

Answer 51

cleft

Question 52

the temporary "jawbone" in the mandibular arch is known as

Answer 52

meckel's cartilage

Question 53

Germ layer that derives digestive system

Answer 53

endoderm

Question 54

Germ layer that derives thyroid gland

Answer 54

endoderm

Question 55

Germ layer that derives epidermis

Answer 55

ectoderm

Question 56

Germ layer that derives bones

Answer 56

mesoderm

Question 57

Germ layer that derives brain

Answer 57

ectoderm

Question 58

Germ layer that derives muscle

Answer 58

mesoderm

Question 59

Germ layer that derives respiratory system

Answer 59

endoderm

Question 60

Germ layer that derives lining of anterior two thirds of tongue

Answer 60

ectoderm

Question 61

Arch/pouch/groove? eustachian tube

Answer 61

pouch I

Question 62

Arch/pouch/groove? parathyroid glands

Answer 62

pouches III and IV

Question 63

Arch/pouch/groove? Meckel's cartilage

Answer 63

arch I

Question 64

Arch/pouch/groove? palatine tonsils

Answer 64

pouch II

Question 65

Arch/pouch/groove? Eardrum

Answer 65

groove I and pouch I

Question 66

Arch/pouch/groove? External meatus

Answer 66

groove I

Question 67

What becomes cheeks

Answer 67

maxillary

Question 68

What becomes forehead

Answer 68

frontal

Question 69

What becomes mandible

Answer 69

mandibular

Question 70

What becomes side of nose

Answer 70

lateral nasal

Question 71

What becomes philtrum

Answer 71

median nasal/globular

Question 72

What becomes sides of palate

Answer 72

maxillary

Question 73

What becomes front of palate

Answer 73

globular