Pharynx

Xem 1-20 trên 25 kết quả Pharynx
  • Tuyến nước bọt (1-3 đôi) đổ vào khoang miệng ở chỗ gốc môi dưới hoặc thông với bộ phận miệng. Pharynx (hầu): với bắp thịt kiểm bơm. Có khi có tuyến hầu như ở ong mật. Phía sau hẹp lại thành ống dấu thức ăn (thực quản). Oesophagus (thực quản):thành có cơ vòng và cơ dọc. Ingluvies (diều):phình to ra để chứa thức ăn. Proventriculus (dạ dày trước, mề, dạ dày hình chén). Có khi không tồn tại, thí dụ ở bọn hút máu, ở sâu non.

    pdf11p myxaodon10 14-06-2011 75 34   Download

  • Hầu (pharynx) là ngã tư gặp nhau của đường tiêu hoá và đường hô hấp, không khí từ mũi qua hầu để vào thanh quản, thức ăn từ miệng qua hầu vào thực quản. 1. HÌNH THỂ NGOÀI VÀ LIÊN QUAN Là một ống được cấu tạo bởi cân và cơ kéo dài từ nền sọ tới ngang mức đốt sống cổ VI, dài độ 15cm, ở trên rộng độ 5cm, ở dưới hẹp dần đổ vào thực quản (rộng 2cm). 1.1. Hình thể ngoài Hầu giống như một cái phễu, có miệng ở trên mở ra trước thông với...

    pdf6p ytaxinhdep 19-10-2010 84 18   Download

  • Thanh hầu (laryngo pharynx) Là phần dưới cùng, rộng ở trên và hẹp ở dưới. - Thành sau kéo dài từ đất sống CIV đến đốt sống CVI. - Thành trước nằm ngay sau thanh quản. Giữa là nắp thanh môn, lỗ thanh quản. Bên ngoài thanh quản là ngách hình lê và sụn giáp. Ngách hình lê được giới hạn bên trong là nếp phễu nắp thanh môn, sụn phễu và sụn nhẫn, bên ngoài là màng giáp móng và sụn giáp.

    pdf5p ytaxinhdep 19-10-2010 67 10   Download

  • Harrison's Internal Medicine Chapter 32. Oral Manifestations of Disease Oral Manifestations of Disease: Introduction As primary care physicians and consultants, internists are often asked to evaluate patients with disease of the oral soft tissues, teeth, and pharynx. Knowledge of the oral milieu and its unique structures is necessary to guide preventive services and recognize oral manifestations of local or systemic disease (Chap. e7).

    pdf5p ongxaemnumber1 29-11-2010 60 7   Download

  • The oesophagus is a muscular tube connecting the pharynx to the stomach and measuring 25–30 cm in the adult. Its primary function is as a conduit for the passage of swallowed food and fluid, which it propels by antegrade peristaltic contraction. It also serves to prevent the reflux of gastric contents whilst allowing regurgitation, vomiting and belching to take place. It is aided in these functions by the upper and lower oesophageal sphincters sited at its proximal and distal ends.

    pdf394p crazy_sms 07-05-2012 22 8   Download

  • The rationale for selecting three cardinal symptoms is based on their high sensitivity and their relatively high specificity for ABRS, especially when considering the time interval of persistence for 10 days or longer. 36-38 Purulent nasal drainage predicts presence of bacteria on antral aspi- ration when reported as purulent rhinorrhea by the patient, when manifest as postnasal drip or purulent discharge in the posterior pharynx, or when observed in the nasal cavity or near the sinus ostium. 39,40 Purulent rhinorrhea also predicts radiographic evidence of ABRS.

    pdf38p nhacnenzingme 28-03-2013 62 5   Download

  • Diphtheria is a nasopharyngeal and skin infection caused by Corynebacterium diphtheriae. Toxigenic strains of C. diphtheriae produce a protein toxin that causes systemic toxicity, myocarditis, and polyneuropathy. The toxin is associated with the formation of pseudomembranes in the pharynx during respiratory diphtheria. While toxigenic strains most frequently cause pharyngeal diphtheria, nontoxigenic strains commonly cause cutaneous disease.

    pdf14p ozon_ozon 26-04-2012 35 5   Download

  • Harrison's Internal Medicine Chapter 131. Diphtheria and Other Infections Caused by Corynebacteria and Related Species Diphtheria Diphtheria is a nasopharyngeal and skin infection caused by Corynebacterium diphtheriae. Toxigenic strains of C. diphtheriae produce a protein toxin that causes systemic toxicity, myocarditis, and polyneuropathy. The toxin is associated with the formation of pseudomembranes in the pharynx during respiratory diphtheria. While toxigenic strains most frequently cause pharyngeal diphtheria, nontoxigenic strains commonly cause cutaneous disease.

    pdf5p colgate_colgate 21-12-2010 47 4   Download

  • The average annual incidence rates of certain cancers, including cervical, esophageal, liver, oral cavity and pharynx, and stomach cancer were significantly higher in the poorest areas in New Jersey as compared to the wealthiest areas. Among men, lung cancer incidence rates were significantly higher in the poorest areas, while lung cancer rates for women did not differ substantially among the three poverty area groups (areas with high poverty, medium poverty, and low poverty).

    pdf0p khongmuonnghe 07-01-2013 18 3   Download

  • Bài viết này chỉ đề cập đến phần trên của bộ phận hô hấp (upper respiratory tract); phần này bao gồm: mũi, miệng, cổ họng kể cả thanh quản (larynx), pharynx (yết hầu?). Nhiễm trùng phần trên của đường hô hấp là loại nhiễm trùng thông thường nhất, gây ra bởi siêu vi khuẩn, vi khuẩn hoặc các loại vi sinh khác. Hầu hết những sự nhiễm trùng này dẫn đến cảm lạnh, hoặc cúm nhẹ; ngắn hạn và không nguy hại đến sức khỏe.

    pdf21p quanhenguyhiem 19-08-2013 48 4   Download

  • Infection of the submandibular and/or sublingual space typically originates from an infected or recently extracted lower tooth. The result is the severe, lifethreatening infection referred to as Ludwig's angina (see "Oral Infections," above). Infection of the lateral pharyngeal (or parapharyngeal) space is most often a complication of common infections of the oral cavity and upper respiratory tract, including tonsillitis, peritonsillar abscess, pharyngitis, mastoiditis, or periodontal infection.

    pdf6p ongxaemnumber1 29-11-2010 37 3   Download

  • The presenilin proteins are required for intramembrane cleavage of a subset of type 1 membrane proteins including the Alzheimer’s disease amyloid precursor protein. Previous studies indicate presenilin proteins form enzymatically act-ive high molecular mass complexes consisting of hetero-dimers of N- and C-terminal fragments in association with nicastrin, presenilin enhancer-2 and anterior pharynx defective-1 proteins.

    pdf11p dell39 03-04-2013 13 2   Download

  • Thec-secretase complex mediates the final proteolytic event in Alzheimer’s disease amyloid-bbiogenesis. This membrane complex of presenilin, ante-rior pharynx defective, nicastrin, and presenilin enhancer-2 cleaves the C-terminal 99-amino acid fragment of the amyloid precursor protein intra-membranously atc-sites to form C-terminally heterogeneous amyloid-b and cleaves at ane-site to release the intracellular domain or e-C-terminal fragment.

    pdf14p fptmusic 12-04-2013 13 2   Download

  • Harrison's Internal Medicine Chapter 38. Dysphagia Dysphagia: Introduction Dysphagia is defined as a sensation of "sticking" or obstruction of the passage of food through the mouth, pharynx, or esophagus. However, it is often used as an umbrella term to include other symptoms related to swallowing difficulty. Aphagia signifies complete esophageal obstruction, which is usually due to bolus impaction and represents a medical emergency. Difficulty in initiating a swallow occurs in disorders of the voluntary phase of swallowing. However, once initiated, swallowing is completed normally.

    pdf5p ongxaemnumber1 29-11-2010 37 2   Download

  • Oropharyngeal motor dysphagia results from impairment of the voluntary effort required in bolus preparation or neuromuscular disorders affecting bolus preparation, initiation of the swallowing reflex, timely passage of food through the pharynx, and prevention of entry of food into the nasal and the laryngeal opening. Paralysis of the suprahyoid muscles leads to loss of opening of the UES and severe dysphagia. Because each side of the pharynx is innervated by ipsilateral nerves, a unilateral lesion of motor neurons leads to unilateral pharyngeal paralysis.

    pdf5p ongxaemnumber1 29-11-2010 38 2   Download

  • Harrison's Internal Medicine Chapter 136. Meningococcal Infections Definition Neisseria meningitidis is the etiologic agent of two life-threatening diseases: meningococcal meningitis and fulminant meningococcemia. More rarely, meningococci cause pneumonia, septic arthritis, pericarditis, urethritis, and conjunctivitis. Most cases are potentially preventable by vaccination. Etiologic Agent Meningococci are gram-negative aerobic diplococci. Unlike the other neisseriae, they have a polysaccharide capsule.

    pdf5p colgate_colgate 21-12-2010 46 2   Download

  • Single-dose regimens of the third-generation cephalosporins ceftriaxone (given IM) and cefixime (given orally) are the mainstays of therapy for uncomplicated gonococcal infection of the urethra, cervix, rectum, or pharynx. Quinolone-containing regimens are no longer recommended in the United States as first-line treatment because of widespread resistance to these agents. Because co-infection with C. trachomatis occurs frequently, initial treatment regimens must also incorporate an agent (e.g., azithromycin or doxycycline) that is effective against chlamydial infection.

    pdf7p colgate_colgate 21-12-2010 34 2   Download

  • Gas Pharyngitis: Treatment In the usual course of uncomplicated streptococcal pharyngitis, symptoms resolve after 3–5 days. The course is shortened little by treatment, which is given primarily to prevent suppurative complications and ARF. Prevention of ARF depends on eradication of the organism from the pharynx, not simply on resolution of symptoms, and requires 10 days of penicillin treatment (Table 130-3). Erythromycin may be substituted for penicillin in cases of penicillin allergy.

    pdf5p colgate_colgate 21-12-2010 35 2   Download

  • Related sensations during eating such as somatic sensations of coolness, warmth, and irritation are mediated through the trigeminal, glossopharyngeal, and vagal afferents in the nose, oral cavity, tongue, pharynx, and larynx. Flavor is the complex interaction of taste, smell, and somatic sensation.

    pdf26p socolanong 25-04-2012 30 2   Download

  • Neisseria meningitidis is the etiologic agent of two life-threatening diseases: meningococcal meningitis and fulminant meningococcemia. More rarely, meningococci cause pneumonia, septic arthritis, pericarditis, urethritis, and conjunctivitis. Most cases are potentially preventable by vaccination. Etiologic Agent Meningococci are gram-negative aerobic diplococci. Unlike the other neisseriae, they have a polysaccharide capsule. They are transmitted among humans—their only known habitat—via respiratory secretions.

    pdf19p ozon_ozon 26-04-2012 21 2   Download

CHỦ ĐỀ BẠN MUỐN TÌM

Đồng bộ tài khoản