primary choana
Initial opening of the nasal pits and olfactory sac of the embryo into the rostral part of the primordial oronasal cavity, before the formation of the secondary palate.
| Type | Organ |
| Body System | Respiratory |
| Parent Structure | naris |
| FMA ID | 295944 |
Frequently Asked Questions
What is the primary choana?
Initial opening of the nasal pits and olfactory sac of the embryo into the rostral part of the primordial oronasal cavity, before the formation of the secondary palate.
What body system is the primary choana part of?
The primary choana is part of the Respiratory.
Related Structures
afferent filamental artery
AFA
afferent lamellar arteriole
afferent lamellar arterioles
air capillary of parabronchus
air capillary
air sac
psotcranial air sac
airway submucosal gland
respiratory tract submucosal gland
ala of nose
ala nasi
alary cartilage
alinasal cartilage
anterior maxillary process
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