the nose

Question 1

what is the septal cartilage?

Answer 1

cartilage assoc w/ the midline that helps separate the nose into two nostrils

Question 2

what is the allar cartilage?

Answer 2

the cartage that helps to form the shape of the nostrils

Question 3

what is the external nose structure composed of?

Answer 3

bone and cartilage

Question 4

explain the arterial supply to the nose

Answer 4

the nose has a rich blood supply

the vessels supplying the external nose originate from both arteries supplying the face and also vessels deeper w/in the head that supply the orbit and palate

Question 5

what nerve supplies the bridge of the nose?

Answer 5

the opthalmic division of the trigeminal nerve

Question 6

what nerve supplies the alae of the nose?

Answer 6

the maxillary division of the trigeminal nerve

Question 7

what bones are found in the septal region of the nose?

Answer 7

vomar and ethmoid bones

Question 8

what bone is found in the most superior parts of the bridge of the nose?

Answer 8

the nasal bones

Question 9

explain what forms the conchae

Answer 9

the ethmoid bone forms the superior and middle conchae

the inferior concha is an individual bone (not part of the ethmoid)

Question 10

what is the medial wall of the nose?

Answer 10

the septal wall that separates the nasal passage into 2 cavities

Question 11

in life what covers the bony and cartilaginous aspects of the nose?

Answer 11

a mucus lining

Question 12

what are the conchae?

Answer 12

there are three folds on each lateral wall of the nasal passages called conchae

Question 13

what is the space under the conchae called?

Answer 13

a meatus

Question 14

what is the function of the conchae?

Answer 14

the conchae help to swirl the air as it passes through the nasal cavity which allows it to be slightly warmed before it passes into the nasopharynx

Question 15

how are odour particles detected?

Answer 15

as the air swirls in the nose it will pass the olfactory cells in the roof of the nasal cavity, facilitating the detection of odour particles

Question 16

what are the maxillary paranasal sinuses?

Answer 16

the large mucus lined spaces ether side of the nose

Question 17

where are paranasal sinuses found?

Answer 17

in the frontal, maxillary and sphenoid bones

Question 18

what is the purpose of the paranasal sinuses?

Answer 18

to make the front of the head lighter and easier to maintain in position

Question 19

explain the sensory innervation to the paranasal sinuses

Answer 19

the paranasal sinuses are supplied w/ sensory innervation by branches of the trigeminal nerve

Question 20

where is kisselbachs plexus?

Answer 20

on the medial wall of the nose

Question 21

explain the sensory innervation to the lateral walls of the nose

Answer 21

the lateral walls are supplied w/ sensory innervation by the opthalmic and maxillary divisions of the trigeminal nerve

Question 22

where can the olfactory bulb be seen?

Answer 22

the olfactory bulb communicating w/ the olfactory nerve can be seen in the roof of the cavity

Question 23

what nerve supplies the medial walls?

Answer 23

the trigeminal nerve

Question 24

where do the nasal cavities drain blood to?

Answer 24

the facial vein, pterygoid venous plexus and the cavernous venous sinus