× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
I
3
p
2
w
2
y
2
J
2
Q
2
r
2
o
2
e
2
j
2
d
2
T
2
New Topic  
xoxololo xoxololo
wrote...
Posts: 566
Rep: 0 0
6 years ago
Which germ layer are the bones (except facial) derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm



(Question 2) Arrange the following in the sequence in which they form in the embryo. (1) neural plate (2) neural tube (3) notochord (4) primitive streak
 
  A. 1, 2, 3, 4
  B. 1, 3, 2, 4
  C. 4, 3, 1, 2
  D. 4, 1, 3, 2
  E. 3, 4, 1, 2



(Question 3) The embryo is most sensitive to outside influences that can cause malformations during the
 
  A. first two weeks after fertilization.
  B. third to the ninth weeks of development.
  C. ninth to the sixteenth weeks of development.
  D. twelfth to the twentieth weeks of development.
  E. twenty-first to twenty-sixth week of development.



(Question 4) Which germ layer is the epidermis derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm



(Question 5) Which germ layer is tooth enamel derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm



(Question 6) Which germ layer is the urinary bladder derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm



(Question 7) Which germ layer is the cardiovascular system derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm



(Question 8) Which germ layer is the brain and spinal cord derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm



(Question 9) Which germ layer is most muscle derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm



(Question 10) Which germ layer is the thyroid derived from?
 
  A. ectoderm
  B. mesoderm
  C. endoderm
Read 85 times
2 Replies

Related Topics

Replies
wrote...
6 years ago
1) B

- - -

2) C

- - -

3) B

- - -

4) A

- - -

5) A

- - -

6) C

- - -

7) B

- - -

8) A

- - -

9) B

- - -

10) C
xoxololo Author
wrote...
6 years ago
Literally the most helpful website ever
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1633 People Browsing
Related Images
  
 977
  
 474
  
 14294
Your Opinion
Do you believe in global warming?
Votes: 488