Embryology final PASSED Actual Exam
Questions and CORRECT Answers
Future site of heart development - CORRECT ANSWER✔✔- Cardiogenic region
Future site of the mouth; organizer of the head region - CORRECT ANSWER✔✔-
Prechordal plate
Future site of the oral cavity - CORRECT ANSWER✔✔- Oropharyngeal membrane
Future site of the oral cavity - CORRECT ANSWER✔✔- Cloacal membrane
Blood cell formation - CORRECT ANSWER✔✔- Angiogenesis
Blood vessel formation - CORRECT ANSWER✔✔- Vasculogenesis
Blood formation and specialization of blood cells (erythrocytes, leukocytes, thrombocytes. -
CORRECT ANSWER✔✔- Hematogenesis
Give rise to the vertebrae, ribs and scapula - CORRECT ANSWER✔✔- Sclerotome
Give rise to the dermis of the skin - CORRECT ANSWER✔✔- Dermatome
Give rise to muscle of the trunk and back - CORRECT ANSWER✔✔- Myotome
The first pair of somites first appear on about day_____ of embryonic development -
CORRECT ANSWER✔✔- 20
Subsequent somites appear in_________ order - CORRECT ANSWER✔✔- Craniocaudal
, About 3 pairs of somites develop each day until the______week of embryonic development -
CORRECT ANSWER✔✔- Fifth
About ______ pairs of somites develop during the somite period (week 3-5) - CORRECT
ANSWER✔✔- 42-44
The process by which the bilaminar embryonic disc is converted into a trilaminar embryonic
disc is referred to as - CORRECT ANSWER✔✔- Gastrulation
During this period, each germ layer give rise to specific tissues and organs - CORRECT
ANSWER✔✔- Gastrulation
This period is often referred to as the beginning of morphogenesis, the development of
body form and structure of various organs of the body. - CORRECT ANSWER✔✔-
Gastrulation
This period begins with the formation of the primitive streak. - CORRECT ANSWER✔✔-
Gastrulation
Appears at the beginning of the 3rd week on the dorsal aspect of the embryonic disc,
resulting from migration of cells of the epiblast. - CORRECT ANSWER✔✔- Primitive streak
As soon as this structure appears, it is possible to identify the embryo's cranial and
caudal ends. - CORRECT ANSWER✔✔- Primitive streak
As the ___ elongates, its cranial end forms the primitive node. - CORRECT ANSWER✔✔-
Primitive streak
The ____ appears on the dorsal aspect of the embryonic disc during the third week of human
development, forming mesoderm until the early part of the fourth week of human
development. - CORRECT ANSWER✔✔- Primitive streak
Questions and CORRECT Answers
Future site of heart development - CORRECT ANSWER✔✔- Cardiogenic region
Future site of the mouth; organizer of the head region - CORRECT ANSWER✔✔-
Prechordal plate
Future site of the oral cavity - CORRECT ANSWER✔✔- Oropharyngeal membrane
Future site of the oral cavity - CORRECT ANSWER✔✔- Cloacal membrane
Blood cell formation - CORRECT ANSWER✔✔- Angiogenesis
Blood vessel formation - CORRECT ANSWER✔✔- Vasculogenesis
Blood formation and specialization of blood cells (erythrocytes, leukocytes, thrombocytes. -
CORRECT ANSWER✔✔- Hematogenesis
Give rise to the vertebrae, ribs and scapula - CORRECT ANSWER✔✔- Sclerotome
Give rise to the dermis of the skin - CORRECT ANSWER✔✔- Dermatome
Give rise to muscle of the trunk and back - CORRECT ANSWER✔✔- Myotome
The first pair of somites first appear on about day_____ of embryonic development -
CORRECT ANSWER✔✔- 20
Subsequent somites appear in_________ order - CORRECT ANSWER✔✔- Craniocaudal
, About 3 pairs of somites develop each day until the______week of embryonic development -
CORRECT ANSWER✔✔- Fifth
About ______ pairs of somites develop during the somite period (week 3-5) - CORRECT
ANSWER✔✔- 42-44
The process by which the bilaminar embryonic disc is converted into a trilaminar embryonic
disc is referred to as - CORRECT ANSWER✔✔- Gastrulation
During this period, each germ layer give rise to specific tissues and organs - CORRECT
ANSWER✔✔- Gastrulation
This period is often referred to as the beginning of morphogenesis, the development of
body form and structure of various organs of the body. - CORRECT ANSWER✔✔-
Gastrulation
This period begins with the formation of the primitive streak. - CORRECT ANSWER✔✔-
Gastrulation
Appears at the beginning of the 3rd week on the dorsal aspect of the embryonic disc,
resulting from migration of cells of the epiblast. - CORRECT ANSWER✔✔- Primitive streak
As soon as this structure appears, it is possible to identify the embryo's cranial and
caudal ends. - CORRECT ANSWER✔✔- Primitive streak
As the ___ elongates, its cranial end forms the primitive node. - CORRECT ANSWER✔✔-
Primitive streak
The ____ appears on the dorsal aspect of the embryonic disc during the third week of human
development, forming mesoderm until the early part of the fourth week of human
development. - CORRECT ANSWER✔✔- Primitive streak
