WEEK 4 Flashcards by Amyra Handa

dorsal body cavities includes

cranial cavity
vertebral canal

How well did you know this?

Not at all

Perfectly

ventral body cavity includes

thoracic cavity
abdominopelvic cavity

How well did you know this?

Not at all

Perfectly

transverse thoracic plane extends across

sternomanubrial joint and 4th thoracic veretrbra

How well did you know this?

Not at all

Perfectly

anterior end of a rib articulates with

costal cartilage

How well did you know this?

Not at all

Perfectly

posterior end of a typical rib articulates with the

body and transverse process of a verterbra

How well did you know this?

Not at all

Perfectly

costal margin is formed by the numbers

8, 9 and 10 costal cartilages

How well did you know this?

Not at all

Perfectly

true ribs (1-7) articulate with

sternum via own costal cartilage

How well did you know this?

Not at all

Perfectly

false ribs (8 - 10) articulate with

sternum via costal cartilage above

How well did you know this?

Not at all

Perfectly

Where are Paranasal air sinuses found

Seen within pneumatic bones - help reduce weight of skull

How well did you know this?

Not at all

Perfectly

What is Paranasal air sinuses lined by

Mucous membranes- humidifies inhaled air

How well did you know this?

Not at all

Perfectly

Are Paranasal air sinuses resonating chambers

YES

How well did you know this?

Not at all

Perfectly

3 groups of ethmoidal air sinus

Anterior
Middle
Posterior

How well did you know this?

Not at all

Perfectly

4 paranasal air sinuses

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

How well did you know this?

Not at all

Perfectly

Location of the maxiallry sinus

Seen within maxilla

How well did you know this?

Not at all

Perfectly

Location of sphenoidal sinus

Seen within the sphenoid

How well did you know this?

Not at all

Perfectly

Location of the frontal sinus

Seen within the frontal bone

How well did you know this?

Not at all

Perfectly

Location of the ethmoidal sinus

Seen within the ethmoid

How well did you know this?

Not at all

Perfectly

Communication of the maxiallry sinus

Opens into the nasal cavity through middle meatus

How well did you know this?

Not at all

Perfectly

Communication of the frontal sinus

Opens int nasal cavity via spehnoethmoid recess

How well did you know this?

Not at all

Perfectly

Communication of the sphenoidal sinus

Middle- open into middle meatus

How well did you know this?

Not at all

Perfectly

Communication of the ethmoidal sinus

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

How well did you know this?

Not at all

Perfectly

Is the inferior chonae an independent bone

yes

How well did you know this?

Not at all

Perfectly

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

Middle meatus

How well did you know this?

Not at all

Perfectly

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

Superior meautus

How well did you know this?

Not at all

Perfectly

The inferior meatus receives the opening of the

Nasolacrimal duct

Nasal cavity

The frontal sinus opens through what opening

Middle meatus

The sphenoidal sinus opens into what cavity

Nasal cavity

The sphenoidal sinus opens though what opening

Sphenoethmoidal recess

The maxillary sinus opens into what cavity

Nasal cavity

The maxillary sinus opens through what opening

Middle meatus

The posterior ethmoidal air sinus opens into the

Superior meatus

The maxiallry air sinus opens into the

Middle meatus

The frontal air sinus open into the

Middle meatus

The sphenoidal air sinus opens into the

Sphenodethmoidal recess

The anterior ethmoidal air sinus opens into

Middle meatus

The nasolacrimal duct opens into the

Inferior meatus

Middle ethmoidal air sinus opens into

Middle meatus

What type of bone does the shaft have

Lots of compact bone

What does the medulla cavity store

Bone marrow

What bone is the skull

Diploic bone

diploic bone

spongey bone surrounded by 2 plates of compact bone

What is the endosteum?

thin membrane that lines the medullary cavity

What tissue is periosteum

dense irregular connective tissue

Is compact bone heavy or light

Heavy

Is trabecular bone heavy or light

Light

Two chemical compositions of bone

Organic Inorganic

Inorganic chemical composition of bone

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

organic chemical composition of bone

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

What are Osteoprogenitor cells

Stem cells

What are osteoblasts

Bone building cells

What are osteocytes

Mature bone cells

What are oestoclasts?

Bone removing cells

Organic matrix of bone

Collagen fibres, glycoproteins and proteoglycans

What is lacunae?

small cavities in bone that contain osteocytes

What is lamellae?

Layers of bone matrix + fibres

What is the osteon?

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

What is canaliculi?

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

What s volkmans Canal

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

Key feature of compact bone

Presence of osteons

Osteon is what

Central Haversian canal surrounded by concentric rings of lamellae

The structure that connects two Haversian canals is

Volkmans canal

Osteocytes are seen within spaces called

Lamellae

What does pink in histology mean

Cellular components take stain

What are the white spaces in a cell

Marrow spaces filled with adipose tissue = fat cells

End of long bone do

Form an articulation