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DEN1DSB > WEEK 4 > Flashcards

WEEK 4 Flashcards

1
Q

dorsal body cavities includes

A

cranial cavity
vertebral canal

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2
Q

ventral body cavity includes

A

thoracic cavity
abdominopelvic cavity

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3
Q

transverse thoracic plane extends across

A

sternomanubrial joint and 4th thoracic veretrbra

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4
Q

anterior end of a rib articulates with

A

costal cartilage

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5
Q

posterior end of a typical rib articulates with the

A

body and transverse process of a verterbra

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6
Q

costal margin is formed by the numbers

A

8, 9 and 10 costal cartilages

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7
Q

true ribs (1-7) articulate with

A

sternum via own costal cartilage

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8
Q

false ribs (8 - 10) articulate with

A

sternum via costal cartilage above

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9
Q

Where are Paranasal air sinuses found

A

Seen within pneumatic bones - help reduce weight of skull

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10
Q

What is Paranasal air sinuses lined by

A

Mucous membranes- humidifies inhaled air

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11
Q

Are Paranasal air sinuses resonating chambers

A

YES

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12
Q

3 groups of ethmoidal air sinus

A

Anterior
Middle
Posterior

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13
Q

4 paranasal air sinuses

A

Frontal air sinus , ethmoidal air sinus , maxillary air sinus , sphenoidal air sinus

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14
Q

Location of the maxiallry sinus

A

Seen within maxilla

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15
Q

Location of sphenoidal sinus

A

Seen within the sphenoid

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16
Q

Location of the frontal sinus

A

Seen within the frontal bone

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17
Q

Location of the ethmoidal sinus

A

Seen within the ethmoid

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18
Q

Communication of the maxiallry sinus

A

Opens into the nasal cavity through middle meatus

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19
Q

Communication of the frontal sinus

A

Opens int nasal cavity via spehnoethmoid recess

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20
Q

Communication of the sphenoidal sinus

A

Middle- open into middle meatus

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21
Q

Communication of the ethmoidal sinus

A

Anterior and Middle enter through the middle meatus. Posterior opens to nasal cavity through superior meatus

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22
Q

Is the inferior chonae an independent bone

A

yes

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23
Q

The anterior and middle ethmoidal sinuses open into the nasal cavity through the..

A

Middle meatus

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24
Q

The posterior ethmoidal sinus opens into the nasal cavity through the..

A

Superior meautus

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25
Q

The inferior meatus receives the opening of the

A

Nasolacrimal duct

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26
Q

Nasolacrimal duct

A

Nasal cavity

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27
Q

The frontal sinus opens through what opening

A

Middle meatus

28
Q

The sphenoidal sinus opens into what cavity

A

Nasal cavity

29
Q

The sphenoidal sinus opens though what opening

A

Sphenoethmoidal recess

30
Q

The maxillary sinus opens into what cavity

A

Nasal cavity

31
Q

The maxillary sinus opens through what opening

A

Middle meatus

32
Q

The posterior ethmoidal air sinus opens into the

A

Superior meatus

33
Q

The maxiallry air sinus opens into the

A

Middle meatus

34
Q

The frontal air sinus open into the

A

Middle meatus

35
Q

The sphenoidal air sinus opens into the

A

Sphenodethmoidal recess

36
Q

The anterior ethmoidal air sinus opens into

A

Middle meatus

37
Q

The nasolacrimal duct opens into the

A

Inferior meatus

38
Q

Middle ethmoidal air sinus opens into

A

Middle meatus

39
Q

What type of bone does the shaft have

A

Lots of compact bone

40
Q

What does the medulla cavity store

A

Bone marrow

41
Q

What bone is the skull

A

Diploic bone

42
Q

diploic bone

A

spongey bone surrounded by 2 plates of compact bone

43
Q

What is the endosteum?

A

thin membrane that lines the medullary cavity

44
Q

What tissue is periosteum

A

dense irregular connective tissue

45
Q

Is compact bone heavy or light

A

Heavy

46
Q

Is trabecular bone heavy or light

A

Light

47
Q

Two chemical compositions of bone

A

Organic
Inorganic

48
Q

Inorganic chemical composition of bone

A

mineral salts
- seen in form of HYDROXYAPATITE CRYSTALS
- Mainly calcium phosphates, responsible for bone hardness and its resistance to compression

49
Q

organic chemical composition of bone

A

cells
1. osteoprogenitor cells
2. osteoblasts
3. osteocytes
4. osteoclasts

50
Q

What are Osteoprogenitor cells

A

Stem cells

51
Q

What are osteoblasts

A

Bone building cells

52
Q

What are osteocytes

A

Mature bone cells

53
Q

What are oestoclasts?

A

Bone removing cells

54
Q

Organic matrix of bone

A

Collagen fibres, glycoproteins and proteoglycans

55
Q

What is lacunae?

A

small cavities in bone that contain osteocytes

56
Q

What is lamellae?

A

Layers of bone matrix + fibres

57
Q

What is the osteon?

A

Groups of lamellae (plates) arranged in rings and surround a central HAVERSIAN/ CENTRAL CANAL (concentric lamellae)

58
Q

What is canaliculi?

A

small canals that communicate lacunae to each other and the central canal

59
Q

What s volkmans Canal

A

connect blood vessels of periosteum with that of the central canal and the medullary cavity

60
Q

Key feature of compact bone

A

Presence of osteons

61
Q

Osteon is what

A

Central Haversian canal surrounded by concentric rings of lamellae

62
Q

The structure that connects two Haversian canals is

A

Volkmans canal

63
Q

Osteocytes are seen within spaces called

A

Lamellae

64
Q

What does pink in histology mean

A

Cellular components take stain

65
Q

What are the white spaces in a cell

A

Marrow spaces filled with adipose tissue = fat cells

66
Q

End of long bone do

A

Form an articulation

DEN1DSB (10 decks)

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