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What is the only cartilage in the upper aerodigestive tract to form a complete circle?
Wiki User
∙ 12y ago
It is the cricoid cartilage
Wiki User
∙ 12y ago
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What connects the upper and lower respiratory systems?
The Cricoid cartilage. The larynx is the organ at the end of the upper respiratory tract (responsible for preventing food and drink going down the airway and contains the vocal chords) the trachea is the first organ in the lower respiratory tract (the windpipe). The thyroid cartilage is located around the mid to lower larynx and the cricoid cartilage links the bottom of the larynx to the top of the trachea. The epithelial cells (internal surface) change from mostly squamous cells (smooth lining) to columnar epithelial cells (many with microscopic hairlike protrusions called cilia).
What is the function larynx?
The part of the respiratory tract between the pharynx and the trachea, having walls of cartilage and muscle and containing the vocal cords enveloped in folds of mucous membrane.the voice box in which contains the vocal cords in the neck
Fistulous tract or track?
tract
What is the fiber tract that carries impulses to the cerebrum and then to the lower CNS called?
This fiber tract is called the projection tract.
What is the functinal difference between the conducting airways and the respiratory airways?
The conducting airways transport atmospheric gases down the respiratory tract to the respiring airways, where gas exchange takes place. Gas exchange does not take place in the conducting airway, which contains cartilage, cilia, and mucosal cells.
Why is cartilage important in the gaseous exchange system?
it prevents our tract from colasping
Do chordates have a complete digestive tract?
yes!
Is the planaria digestive tract complete or incomplete?
Mammals have a complete digestive tract, it starts from mouth to anus. Although each species have some different type and length of tract, they have esophagus, ventriculus, intestinum which function to support a complete food metabolism. Besides, some digestive glands also support this function.
Does a perch have a gastrovascular cavity or a complete digestive tract?
Perch have complete digestive systems
Where does the upper airway or upper respiratory tract end?
some say the vocal cords (glottis) or others say a line of cartilage.
The complete lining of a person's digestive tract is renewed approximately every?
The digestive tract is renewed every 3-5 days.
What phylum of worms has a true coelom and a complete digestive tract?
Annelida
What feeds on the undigested food in the digestive tract to help complete digestion?
Bacteria.
What is cartilege?
Cartilage is a flexible yet firm connective tissue that is found in different forms in the respiratory tract and larynx. It is also found in the external ear and joints.
Is the crayfish digestive tract complete or incomplete?
complete. The crayfish has both a mouth for ingesting food and an anus to expel the waste.
Which phylum of worms has a false coelom and a complete digestive tract?
aschelminthes
Do clams have a complete or incomplete digestive tract?
They have complete digestive system.
