Sinuses

Question 1

what are sinuses

Answer 1

mucous membrane-lined spaces in certain cranial and facial bones
- continuous lining of nasal cavity

Question 2

functions of sinuses

Answer 2

• lighten the skull bones
• humidifying and heating inhaled air
• add resonance to voice

Question 3

what are maxillary sinuses

Answer 3

• pyramidal in shape
• lie on either side of nasal cavity - below orbits

Question 4

what are frontal sinuses

Answer 4

• irregular + varied in shape and size
• above nasal cavity + orbits
• posterior to superciliary arches to frontal bone

Question 5

what are ethmoid sinuses

Answer 5

• numerous small cavities - irregular in shape
• between medial wall of orbits and nasal cavity

Question 6

what are sphenoidal sinuses

Answer 6

• cuboid in shape
• lie within body of sphenoidal bone below sella turcica

Question 7

sinus belonging to the jaw

Answer 7

maxillary

Question 8

sinus in front/ forehead

Answer 8

frontal

Question 9

wedge shaped like sinus

Answer 9

sphenoid

Question 10

sieve-like sinus

Answer 10

ethmoid