Germ Layer Derivatives

Question 1

epidermis

Answer 1

ectoderm

Question 2

hair

Answer 2

ectoderm

Question 3

nails

Answer 3

ectoderm

Question 4

sweat glands

Answer 4

ectoderm

Question 5

sebaceous glands

Answer 5

ectoderm

Question 6

lens of the eye

Answer 6

ectoderm

Question 7

anterior epithelium of the cornea

Answer 7

ectoderm

Question 8

acinar cells of parotid gland

Answer 8

ectoderm

Question 9

acinar cells of mammary gland

Answer 9

ectoderm

Question 10

epithelial lining of:
a- lower anal canal
b- distal part of male urethra
c- external auditory meatus

Answer 10

ectoderm

Question 11

muscles (smooth, cardiac, skeletal)

Answer 11

mesoderm

Question 12

muscles of tongue

Answer 12

mesoderm

Question 13

laryngeal cartilage

Answer 13

mesoderm

Question 14

connective tissue

Answer 14

mesoderm

Question 15

dermis and subcutaneous layer of skin

Answer 15

mesoderm

Question 16

bone

Answer 16

mesoderm

Question 17

cartilage

Answer 17

mesoderm

Question 18

dura mater

Answer 18

mesoderm

Question 19

endothelium of blood and lymph vessels

Answer 19

mesoderm

Question 20

red blood cells and white blood cells

Answer 20

mesoderm

Question 21

spleen

Answer 21

mesoderm

Question 22

kidney

Answer 22

mesoderm

Question 23

testes, epididymus, ductus deferens, seminal vesicle, ejaculatory duct

Answer 23

mesoderm

Question 24

ovary, uterus, uterine tubes, and superior 1/3 of vagina

Answer 24

mesoderm

Question 25

hepatocytes

Answer 25

endoderm

Question 26

acinar cells of the **pancreas**

Answer 26

endoderm

Question 27

acinar cells of **submandibular and sublingual glands**

Answer 27

endoderm

Question 28

epithelial lining of the gastrointestinal tract

Answer 28

endoderm

Question 29

epithelial lining of the trachea, bronchi, and lungs

Answer 29

endoderm

Question 30

urinary bladder, female urethra, and most of male urethra

Answer 30

endoderm

Question 31

auditory tube and middle ear cavity

Answer 31

endoderm