Exam 3- Embryology of the Anterior Thorax Flashcards Preview

Spinal Anatomy > Exam 3- Embryology of the Anterior Thorax > Flashcards

Flashcards in Exam 3- Embryology of the Anterior Thorax Deck (12)
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1
Q

How many primary centers of ossification appear in the manubrium?

A

1-3 centers have been identified

2
Q

How many primary centers of ossification appear in the corpus sterni?

A

typically 6

3
Q

In what part of the sternum will a secondary center of ossification appear?

A

the xiphoid process

4
Q

When does the xiphoid process first demonstrate a center of ossification?

A

sometimes during or after 3 years old

5
Q

When will synchondroses between sternabrae begin to ossify?

A

during puberty

6
Q

Synchondroses of the corpus sterni will fuse together beginning with which sternabrae?

A

the lower sternabrae fuse first; they ossify in a caudal to cranial direction

7
Q

In what part of the rib will primary centers of ossification appear?

A

the body (corpus, shaft)

8
Q

In what parts of the rib will secondary centers of ossification appear?

A

the head, articular surface of the tubercle and the non-articular surface of the tubercle

9
Q

Which ribs will demonstrate primary centers of ossification for the body (corpus or shaft)?

A

all ribs; ribs 1-12

10
Q

Which ribs lack secondary centers of ossification?

A

ribs 11 and 12

11
Q

Which ribs demonstrate three secondary centers of ossification?

A

ribs 2-9

12
Q

Which ribs have only two secondary centers of ossification?

A

ribs 1 and 10