What best explain the passage of air across alveolar membranes?

What best explain the passage of air across alveolar membranes?
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diffusion through moist thin epithelial cells
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How many structures are supported by cartilaginous rings ? Larynx, Trachea, Bronchi, Initial bronchioles, Terminals bronchioles, Alveolar duct, Alveol

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Which of the following statement(s) is/are true concerning CO2 transfer in the lung? a. Carbon dioxide excretion is a direct function of alveolar ventilation b. Normally end tidal CO2 should be identical to PaCO2 c. The gradient between end tidal and arterial CO2 can be an indirect measure of nonperfused alveoli d. Positive pressure ventilation under normal airway pressures creates a significant end tidal PaCO2 gradient

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Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls. (a) Pneumonia (b) Asthma (c) Pleurisy (d) Emphysema

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The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. (a) C : Arterial capillary - Passes oxygen to tissues (b) A : Alveolar cavity - Main site of exchange of respiratory gases (c) D : Capillary wall - Exchange of O2 and CO2 takes place here (d) B : Red blood cells - Transport of CO2 mainly

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Which one of the following characters is not typical of the Class Mammalia? (a) Thecodont dentition (b) Alveolar lungs (c) Ten pairs of cranial nerves (d) Seven cervical vertebrae

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As far as localised alveolar osteitis is concerned; which one of the following is true? A. The incidence in the mandible and maxilla is similar B. The prophylactic prescription of antibiotics prior to extraction reduces the incidence. C. Excessive fibrinolysis is the likely aetiology D. Purulent exudate must be seen for a diagnosis and irrigation is mandatory E. Zn oxide eugenol and alvogyl dressing promote a rapid bone growth

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The most desirable outcome of endodontic treatment is, A. The healing of the alveolar bone B. The deposition of cementum at the apex C. Formation of fibrous capsule around the apex

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The ”biologic width” is the distance between the A. Base of the gingival sulcus and the crest of alveolar bone B. Free gingival margin and the base of the gingival sulcus C. Free gingival margin and the alveolar bone D. Free gingival margin and the mucogingival junction E. Free gingival margin and the base of connective tissue attachment

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A palatal root displaced into the antrum while extracting; what is your decision to retrieve it: A. Through the alveolar B. Surgical opening of canine fossa C. Nasal antrostomy

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All of the following should be considered for systemic antibiotic except: A. Extraction of tooth with acute dento alveolar abscess B. Necrotic ulcerative gingivitis (ANUG) unless it is acute. C. Extraction of 38 or 48 with acute pericoronitis D. Full mouth extraction for a patient with perio disease

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.The places for newly erupted mandibular molars are created by: A. Resorption of anterior ramus and apposition posteriorly B. Apposition of alveolar process C. Apposition of inferior boarder of mandible

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What is NOT CORRECT in regard to the lingual nerve: A. It is posterior and medial to the inferior alveolar nerve B. It passes close to the mandibular 3rd molar C. It may be anaesthetised by the mandibular nerve block D. It provides supply to the lingual gingiva E. Supplies anterior 2/3 of the tongue

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Last Answer : A. It is posterior and medial to the inferior alveolar nerve

The vertical incision of a mucoperiostal flap should: A. Always extend to the alveolar mucoperiostal B. Bisect the middle of gingival papillae C. Be at the right angle of the tooth

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Last Answer : A. Always extend to the alveolar mucoperiostal

What is the most important function of periodontal ligament: A. Keep teeth in the socket B. Protect alveolar bone C. Provide nutrition

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All of the following are keratinised EXCEPT of: A. Crevicular epithelium B. Palatal epithelium C. Alveolar mucosa D. Free gingiva E. Attached gingiva

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Chronic inflammatory periodontal diseases originate in: A. The marginal gingiva B. The crystal alveolar bone C. The cervical cementum

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Last Answer : B. The crystal alveolar bone

Posterior superior alveolar nerve supplies:** A. 8, 7 and 6 except the mesio buccal root of 6 B. 8, 7 and 6

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Which of the following statement is correct for a periodontal disease:** A. The finger pressure is enough for mobility diagnosis B. A communicable disease C. X ray after intra alveolar surgery is sufficient for diagnosis healing D. Systemic diseases have no effects on it E. ZoE paste will accelerate healing

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Which one of following statement about Overdenture is not correct: A. Greater occlusal loads can be applied by the patient B. Retention and stability are generally better than with conventional complete denture C. Alveolar bone resorption is reduced D. The retained roots are covered by the denture thus protecting them from caries and periodontal diseases

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The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. the inter occlusal distance will be physiologically acceptable after treatment B. there will be sufficient tooth bulk in the abutment teeth for proper retention of the crowns C. at least two third of the original alveolar process will remain for adequate periodontal support D. the aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction

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Last Answer : A. the inter occlusal distance will be physiologically acceptable after treatment

In young children what is the commonest finding after dental complaint: A. Acute periodontal abscess B. Chronic periodontal abscess C. Apical abscess D. Chronic alveolar abscess

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The BEST treatment for alveolar abscess:******** A. Endontic treatment or extraction B. Incision and drainage alone C. Extraction D. Endodontic

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As far as localised alveolar osteitis (dry socket) is concerned; which one of the following is true? M07 A. The incidence in the mandible and maxilla is similar B. The prophylactic prescription of antibiotics prior to extraction reduces the incidence. C. Excessive fibrinolysis is the likely aetiology D. Purulent exudate must be seen for a diagnosis and irrigation is mandatory E. Zinc oxide eugenol and alvogyl dressing promote a rapid bone growth

Description : As far as localised alveolar osteitis (dry socket) is concerned; which one of the following is true? M07 A. The incidence in the mandible and maxilla is similar B. The prophylactic ... diagnosis and irrigation is mandatory E. Zinc oxide eugenol and alvogyl dressing promote a rapid bone growth

Last Answer : C. Excessive fibrinolysis is the likely aetiology

The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. The inter occlusal distance will be physiologically acceptable after treatment B. There will be sufficient tooth bulk in the abutment teeth for proper retention of the crowns C. At least two third of the original alveolar process will remain for adequate periodontal support D. The aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction

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In the inferior alveolar block the needle goes through or close to which muscles: A. Buccinator and superior constrictor B. Medial and lateral pterygoid C. Medial pterygoid and superior instructor D. Temporal and lateral pterygoid E. Temporal and medial pterygoid

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Last Answer : A. Buccinator and superior constrictor

The lamina dura is seen on periapical radiographs as:CHECK A. Usual radiolucency between tooth root and surrounding bone as a thin white line. B. Cribriform plate of bone making the tooth socket C. Dense crestal bone consistent with a healthy periodontal status D. Pattern of radiopaque lines in supporting alveolar bone

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Last Answer : B. Cribriform plate of bone making the tooth socket