anatomy: osteology

Question 1

What is the two components of the skull

Answer 1

1. Cranial bones
2. Facial bones

Question 2

What is the function of the cranial bones

Answer 2

Surrounds & protects brain

Question 3

What is the function of the facial bones

Answer 3

Protect & support the entrances to the digestive & respiratory tract

Question 4

What is the four main sutures of the skull

Answer 4

1. Coronal suture: attaches frontal to parietal bone of either sides
2. Lambdoid suture: connects occipital to parietal bones
3. Sagittal suture: connects parietal bones
4. Squamous suture: between temporal & parietal bones

Question 5

What is the weakest point of the skull

Answer 5

Pterion

Question 6

What is sutures

Answer 6

Fibrous immovable joints

Question 7

What is fontanelle

Answer 7

Large membranous gaps between bones due to incomplete fusion of sutures

Question 8

Identify the 8 cranial bones of the skull

Answer 8

image

Question 9

Identify the 14 facial bones of the skull

Answer 9

image

Question 10

What is another word for cranial bones

Answer 10

Neurocranium

Question 11

What is another word for facial bones

Answer 11

Viscerocranium

Question 12

What is the two fontanelle is neonates

Answer 12

1. Frontal fontanelle: junction of coronal & sagittal suture
2. Occipital fontanelle: junction of sagittal & lambdoid suture

Question 13

What is the two functions temporomandibular joint

Answer 13

1. Protrusion & retraction of upper part
2. Elevation & depression of lower part

Question 14

What is the three articulating surfaces of temporomandibular joint

Answer 14

1. Mandibular fossa,
2. Articular tubercle
3. Head of mandible

Question 15

What is the two neurovascular supplies of temporomandibular joint

Answer 15

1. External carotid (superficial branch)
2. Mandibular nerve

Question 16

What is the differences between cervical vertebrae

Answer 16

C1 no body
C2 atlas
C3-7 sulcus of spinal nerve & transverse foramen

Question 17

What is a cranial fossa

Answer 17

Depression at base of skull

Question 18

What is the three cranial fossas

Answer 18

1. Anterior/front cranial fossa
2. Middle cranial fossa
3. Posterior/back cranial fossa

Question 19

What three bones forms the anterior cranial fossa

Answer 19

Parts of frontal, ethmoid & sphenoid bones

Question 20

What is the content of the anterior cranial fossa

Answer 20

Frontal lobe of cerebral cortex

Question 21

What is the three openings in the anterior cranial fossa

Answer 21

1. Foramen caecum
2. Optic canal
3. Cribriform foramina

Question 22

What two bones forms the middle cranial fossa

Answer 22

Parts of sphenoid & temporal bones

Question 23

What is the content of the middle cranial fossa (2)

Answer 23

Temporal lobe of brain & pituitary gland

Question 24

What is the six openings in the middle cranial fossa

Answer 24

1. Superior orbital fissure
2. Foramen rotundum
3. Foramen ovale
4. Carotid canal
5. Foramen lacerum
6. Foramen spinosum

Question 25

What four bones forms the posterior cranial fossa

Answer 25

Parts of temporal, occipital, sphenoid & parietal bones

Question 26

What is the content of the posterior cranial fossa (2)

Answer 26

Brainstem & cerebellum

Question 27

What is the four openings in the posterior cranial fossa

Answer 27

1. Foramen magnum 2. Internal acoustic meatus 3. Jugular foramen 4. Anterior condylar canal

Question 28

What fossa is deep to the ramus of mandible

Answer 28

Infratemporal fossa

Question 29

What fossa forms the pyramidal space from infratemporal fossa to nasal cavity

Answer 29

Pterygopalatine fossa