LESSON 1&2 (base On Pictures)

Question 1

Bilaminar germ disc:

Size
Weeks

Answer 1

1.5 mm

2 weeks

Question 2

(32 - cell, 6 days)

Answer 2

›»»Blastocyst

Question 3

Blastocyst size

Answer 3

1.5 mm

Question 4

Period of Organogenesis

Answer 4

PERIOD OF THE EMBRYO

Question 5

1/100 to 4/100 inch

Answer 5

PERIOD OF THE EMBRYO

Question 6

PERIOD OF THE EMBRYO week

Answer 6

> 2 to 8 weeks (14th day to 56th day)

Question 7

“PERIOD OF THE THREE’S”

Answer 7

Trilaminar Germ Disk Stage

Question 8

1. Gastrulation
   • 2. Neurulation
   • 3. Organogenesis

Answer 8

Trilaminar Germ Disk Stage

( 3 Weeks Old or the)

Question 9

Formation of the primitive streak

Answer 9

Day 15

Question 10

Derivatives of the 3 germ layers

Answer 10

Ectoderm
Mesoderm
Endoderm

Question 11

• Nervous system
• Sensory epithelium of eye, ear, nose
• Epidermis, hair, nails
• Mammary and cutaneous glands
• Epithelium of sinuses, oral and nasal cavities, intraoral glands
• Tooth enamel

Answer 11

Ectoderm

Question 12

• muscies
• CT derivatives: bone cartilage, blood, dentin, pulp, cementum, periodontal ligament

Answer 12

-Mesoderm

Question 13

GI tract epithelium and associated glands

Answer 13

Endoderm

Question 14

NEURULATION

Days?

Answer 14

17 days