All Subjects Medicine Surgery Pathology Anatomy Pharmacology Social & Preventive Medicine Microbiology Gynaecology & Obstetrics Dental Physiology Biochemistry Pediatrics
Showing 188245 questions
Sort:
43870 Physiology

A 45-year old woman is admitted to the hospital following a head injury. She has severe polyuria (producing 1 L of urine every 2 hours) and polydipsia (drinking 3 to 4 glasses of water every hour).During a 24-hour period in the hospital, the woman produces 10 L of urine, containing no glucose. She is placed on overnight water restriction for fuher evaluation. The following morning, she is weak and confused. Her serum osmolarity is 330mOsm/L, her serum is 164 mEg/L, and her urine osmolarity is 70 mOsm/L. She is treated with dDAVP by nasal spray. Within 24 hours of initiating the treatment, her serum osmolarity is 295mOsm/L and her urine osmolarity is 620mOsm/L.

ADiabetes Mellitus Type I
BDiabetes Mellitus Type II
CCentral Diabetes Insipidus
DJuvenile Diabetes Insipidus
Physiology
View Explanation →
43873 Medicine

A 62-year-old woman presents with fever, cough, sputum production, and pleuritic chest pain. CXR reveals a right middle lobe infiltrate, and she is started on antibiotics for the treatment of pneumonia. Her sputum Gram stain is positive for S pneumoniae. Which of the following immunologic mechanisms is the most specific host defense against pneumococcal infection?

Aintact splenic function
Bintact complement function
CIgG antibody directed against capsular antigens
Dalveolar macrophages
Medicine
View Explanation →