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Human Identification > Ribs > Flashcards

Ribs Flashcards

1
Q

How many pair of ribs are there?

A

12

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2
Q

What ribs are true ribs?

A

1-7

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3
Q

How do true ribs articulate with the sternum?

A

Costal Cartilages

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4
Q

What ribs are the false ribs?

A

8-10

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5
Q

What do the false ribs articulate with?

A

Costal margin

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6
Q

What is false ribs?

A

ribs that indirectly articulate with the sternum as their costal cartilages

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7
Q

What ribs are the floating ribs?

A

11 and 12

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8
Q

Where do the floating ribs terminate?

A

Abdominal musculature

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9
Q

What is the pattern of length seen in the ribs?

A

Ribs increase in length from 1-7 and decrease in length 8-12

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10
Q

What end of the ribs is often used for age estimation?

A

Sternal end

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11
Q

What edge of the rib is the “sharp” edge?

A

Caudal (cranial is more blunt)

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12
Q

Name the 2 kinds of ribs

A

Typical and Atypical

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13
Q

How many articular facets does a typical rib usually have?

A

3 (superior and inferior and articular facet of tubercle)

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14
Q

Rib one has 2 grooves for which vascular structures?

A

Subclavian artery and vein

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15
Q

What rib has a tubercle for scalene anterior?

A

Rib 1

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16
Q

Where does scalene anterior run to and from?

A

From C3-C6 transverse processes to scalene tubercle on rib 1

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17
Q

What movements does scalene anterior produce

A

Raises rib 1, flexion and rotation of neck

18
Q

In what direction does rib 2 deviate?

A

Inferiorly

19
Q

What muscles attaches to rib 2?

A

Serratus anterior and scalene posterior

20
Q

Where does serratus anterior run to and from

A

It runs to the second rib from the scrapula

21
Q

Where does scalene posterior run to and from

A

It runs to the second rib from the posterior tubercles of transverse processes of cervical vertebrae C4-C6

22
Q

What movements does scalene posterior produce?

A

Raises rib 2, flexion and rotation of neck

23
Q

Name the atypical ribs

A

1,2,11 and 12

24
Q

How many articular facets does rib 11 have on its head?

A

1 singular one

25
Q

What feature does rib 11 lack?

A

Tubercle

26
Q

What feature is “shallow” on rib 11?

A

Costal groove

27
Q

Which rib is shorter 11 or 12?

A

22

28
Q

What is not present on rib 12?

A

Angle

29
Q

Name 4 pathological ribs

A
  1. Lumbar
  2. Cervical ribs
  3. Bifid ribs
  4. Fused ribs
30
Q

Whats the difference between bifid ribs and fused ribs

A

Bifid ribs: 1 body and 2 sternal ends

Fused ribs: 2 heads fusing 1 into 1 body

31
Q

How many pairs of costal cartilages are there?

A

12

32
Q

What are the costal cartilages

A

Persistent unossified extensions of cartilaginous models that preceded fully ossified ribs

33
Q

What is the purpose of these constal cartilages

A

Allow movement of inspiration and expiration

Give elasticity to thorax

34
Q

What kind of cartilage are costal cartilages

A

Hyaline

35
Q

What is the costochondral junction?

A

A junction between the distal parts of ribs (concave part anteriorly) and constal cartilage (convex end)

36
Q

Can the costal cartilage ossify at all?

A

Yes slowly over time

37
Q

Where is the 1st costosternal joint located

A

Between costal cartilage pair 1 and the manubrium of the sternum

38
Q

What kind of joint is the 1st costosternal joint?

A

Primary cartilaginous joint (can synostose with age)

39
Q

If synostosis happens with the first costosternal joint and the manubrium, what fusion cannot occur?

A

Manubriosternal fusion (between manubrium and sternum)

40
Q

If the manubrium and sternum fuse, can manubriocostal fusion occur?

A

No

41
Q

What kinds of joints are 2nd-7/8th costosternal joints?

A

Synovial joints

42
Q

What costosternal joints are rarely synovial and may have an empty joint cavity?

A

9 and 10

Human Identification (5 decks)

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