Question 1

________ Neurocentral joint
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Neurocentral joint
A) A
B) B
C) C
D)...

Question 2

________ Articulates with the centrum
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Articulates with the centrum
A) A
B)...

Question 3

________ Forms in the mandibular prominence of the first pharyngeal arch
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The mandibular prominence of the first pharyngeal arch gives rise to the lower jaw, therefore the forms within this structure are related to the development of the jaw. Choice A appears to be the best option as it is located within the area described.

Question 4

________ Condensations of mesenchyme
A) Dermatome
B) Phocomelia
C) Digital rays
D) End of fourth week
E) Amelia

Accepted Answer

The distal parts of limb buds are formed by the condensations of mesenchyme, known as digital rays.

Question 5

________ Form the scalene muscles
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The scalene muscles are located in the neck, and choice C is the only muscle group shown in the image that is located in the neck area. Choices A, B, D, and E are all unrelated muscle groups.

Question 6

________ Part of the cartilaginous neurocranium
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Part of the cartilaginous neurocranium
A)...

Question 7

________ Muscles originate from somites
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Muscles originate from somites
A) A
B)...

Question 8

________ Give rise to the muscles of mastication
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Give rise to the muscles...

Question 9

________ Centrum
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Centrum
A) A
B) B
C) C
D) D
E)...

Question 10

________ Form the tongue muscles
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Form the tongue muscles
A) A
B)...

Question 11

________ Part of the membranous neurocranium
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Part of the membranous neurocranium
A)...

Question 12

________ Exerts an inductive influence
A) Upper limb
B) Apical ectodermal ridge
C) Somites
D) Meromelia
E) Lower limb

Accepted Answer

The apical ectodermal ridge (AER) is a structure in the developing limb bud that exerts an inductive influence, directing the growth and differentiation of underlying mesenchymal cells. It is responsible for promoting the growth of the limb along its proximodistal axis (from the shoulder or hip to the fingertip or toe) by signaling to the mesenchyme, which then differentiates into the various tissues of the limb, including bone, muscle, cartilage, and skin.

Question 13

________ Rotates laterally
A) Upper limb
B) Apical ectodermal ridge
C) Somites
D) Meromelia
E) Lower limb

Accepted Answer

The developing upper limbs rotate laterally through 90 degrees on their longitudinal axes;as a result,the elbows face dorsally or posteriorly in an embryo at the end of the eighth week.

Question 14

________ Disappears during childhood
A) A
B) B
C) C
D) D
E) E

Accepted Answer

According to the image code, the missing part is in the second position (the second underscore). The corresponding option in the list is B, which shows a person disappearing during childhood.

Question 15

________ Normally regress during the eighth week
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Normally regress during the eighth...

Question 16

________ Replaced by a synovial joint
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Replaced by a synovial joint
A)...

Question 17

________ Its cartilage is ossified during infancy
A) A
B) B
C) C
D) D
E) E

Accepted Answer

The answer of  ________ Its cartilage is ossified during...

Question 18

________ Rotates medially
A) Upper limb
B) Apical ectodermal ridge
C) Somites
D) Meromelia
E) Lower limb

Accepted Answer

The lower limb rotates medially during development. The upper limb rotates laterally. The apical ectodermal ridge and somites are not involved in limb rotation. Meromelia refers to a partial absence of limbs.

Question 19

________ Limb muscles
A) Upper limb
B) Apical ectodermal ridge
C) Somites
D) Meromelia
E) Lower limb

Accepted Answer

The limb muscles develop from mesenchyme that is derived from mesenchyme in the myotome regions of the somites.Following mesenchymal-epithelial transformation,the muscle-forming cells-myoblasts-migrate into the primordia of the limbs.

Question 20

________ Partial absence of a limb
A) Upper limb
B) Apical ectodermal ridge
C) Somites
D) Meromelia
E) Lower limb

Accepted Answer

Meromelia refers to the partial absence or loss of a limb, typically due to a developmental abnormality or injury. It can occur in either the upper or lower limb, and may involve partial or complete absence of specific segments or bones within the limb. Choice A refers specifically to absence or abnormalities of the upper limb, while choice E refers to the lower limb; choices B and C are unrelated to limb absence or development.

Quiz 1: Gametogenesis and Fertilization

________ Neurocentral joint

________ Articulates with the centrum

________ Forms in the mandibular prominence of the first pharyngeal arch

________ Condensations of mesenchyme

________ Form the scalene muscles

________ Part of the cartilaginous neurocranium

________ Muscles originate from somites

________ Give rise to the muscles of mastication

________ Centrum

________ Form the tongue muscles

________ Part of the membranous neurocranium

________ Exerts an inductive influence

________ Rotates laterally

________ Disappears during childhood

________ Normally regress during the eighth week

________ Replaced by a synovial joint

________ Its cartilage is ossified during infancy

________ Rotates medially

________ Limb muscles

________ Partial absence of a limb