Lecture 21

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Question 1 of 37

What bone separates the nares? = Nasal septum.

Question 1 of 37

Question 2 of 37

What does the nose do to the air? (3) = Warms, humidifies, cleans.

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Question 3 of 37

Describe the respiratory tract? (from the nose) (7) = Nasal cavity – pharynx – larynx – trachea – bronchi – bronchioles – alveoli.

Question 3 of 37

Question 4 of 37

What is ventilation? = The drawing of air into and out of the lungs.

Question 4 of 37

Question 5 of 37

What is respiration? (external) = Air and blood.

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Question 6 of 37

What is internal respiration? (tissue) = Blood – tissue.

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Question 7 of 37

What is cellular respiration? = Inside cell (cellular respiration)

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Question 8 of 37

What are upper respiratory tract infections? (3) = Strep throat, hay fever, rheumatic fever, laryngitis.

Question 8 of 37

Question 9 of 37

What are the structures of the upper respiratory tract? (3) = Nasal cavity, pharynx, larynx.

Question 9 of 37

Question 10 of 37

What are the structures of the lower respiratory tract? (5) = Trachea, bronchi, lobar bronchioles, smaller bronchi, alveoli ducts and sac.

Question 10 of 37

Question 11 of 37

What does not take place in the upper respiratory tract? = Gas exchange.

Question 11 of 37

Question 12 of 37

What are the required conditions of breathable (gas exchange – conditioning) air? (3) = Filter decrease | 37o warm, wet 100%, clean. | Bacteria, virus, dust.

Question 12 of 37

Question 13 of 37

What are nose hairs? What is their function? = Vibrissae.

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Question 14 of 37

What are the bony shelves? = Conchae (bony shelves).

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Question 15 of 37

What cells line the respiratory tract? = Epithelium (ciliated) (in upper).

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Question 16 of 37

What is the function of the goblet cells? = Secrete mucous.

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Question 17 of 37

What covers the cilia? = Mucous.

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Question 18 of 37

What is the action of the cilia to move the mucous? (name) = Mucociliary escalator.

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Question 19 of 37

What glands lie under the epithelium? = Sero mucous glands.

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Question 20 of 37

What do they do? = H2O and filter the air.

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Question 21 of 37

Why do we bleed when we get punched in the nose? = Large amount blood vessels (rich blood supply).

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Question 22 of 37

What is the purpose of rich blood supply? = Warm air.

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Question 23 of 37

What do the conchae do? (2) = Mix air (by swirling), slow passage of air.

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Question 24 of 37

What does moving the air do? = Forces CT into mucosa (filter and wet).

Question 24 of 37

Question 25 of 37

What does slowing the air do? = Warms it.

Question 25 of 37

Question 26 of 37

What is the purpose of the sinus? (2) = Lightens head, resonate voice.

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Question 27 of 37

What are the sections of the pharynx? (3) = Naso pharynx, oropharynx, connects to oral cavity, laryngopharynx.

Question 27 of 37

Question 28 of 37

What are exposed to food? = Oropharynx, laryngopharynx.

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Question 29 of 37

What prevents food going into the nasopharynx during swallowing? = Soft palate.

Question 29 of 37

Question 30 of 37

What closes the epiglottis? = Feed bollus.

Question 30 of 37

Question 31 of 37

What is the first branch of the respiratory tree? = Main stem (left and right branch).

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Question 32 of 37

Which lung is smaller? = Left: smaller.

Question 32 of 37

Question 33 of 37

Why? = Heart occupies more space on the left.

Question 33 of 37

Question 34 of 37

How many lobar bronchia in each lung? = 3 – R. 2 – L.

Question 34 of 37

Question 35 of 37

List the tree branches of trachea – alveolar sacs? (10) = Trachea – main (primary) bronchi – lobar (secondary) bronchi – segmental (tertiary) bronchi – bronchioles - respiratory bronchioles - alveolar ducts, sacs, alveoli.

Question 35 of 37

Question 36 of 37

Which are respiratory zone? = Respiratory bronchi (20th branch).

Question 36 of 37

Question 37 of 37

What are the purposes of trachea cartilage? = Keeps it open (patent).

Question 37 of 37