Which of the following systems is the respiratory system dependent upon in order to distribute oxygen to the body and return oxygen to the lungs?

Which of the following is the most common cause of pneumonia?

Onset of type 1 diabetes mellitus usually occurs after age 30 years.

Test your understanding by matching the term with its correct definition.

A patient is admitted to the ED with extensive burn injuries. Which of the following signs would suggest that the patient has a above glottis inhalation injury?

A vaccine against a Salmonella pathogen includes a purified bacterial protein combined with an aluminum salt adjuvant that helps promote activation and maturation of dendritic cells. Explain: a) why is the adjuvant important in this vaccine formulation and how does it enhances antigen recognition, presentation to T cells, and eventually improves antibody production by B cells? b) Where do Dendritic cells go after they mature, what type of MHC is involved and the type of T cell that is activated 

A 55-year-old patient wakes up and notices a sudden inability to move the muscles on the right side of their face. They report difficulty closing their right eye completely, struggle to smile symmetrically, experience drooling from the right side of their mouth, and perceive tastes differently. They also find that normal sounds seem louder in their right ear. There are no other symptoms of weakness or difficulty speaking. Based on the description of cranial nerve disorders in the sources, what is the most likely diagnosis?

Yellow bone marrow primarily consists of fat.

A 55-year-old patient with a known history of migraines presents to the emergency department. They report experiencing a severe headache that started earlier today. This headache felt different than their usual migraines – more intense and localized differently. Following the peak of the headache, they developed new symptoms: weakness in their right arm and hand, and difficulty speaking clearly. These new symptoms have not resolved and are present several hours later. Physical examination confirms right-sided facial droop, weakness in the right upper extremity, and expressive aphasia (difficulty speaking). Based on the patient’s presentation of new, persistent focal neurological deficits occurring in the context of a severe headache, which condition is most likely the cause, according to the information in the sources?

Case Study: The Young Gymnast’s Injury Maya is a 14-year-old gymnast actively involved in high-intensity training. During a landing, she felt a sharp pain in her lower leg, and an X-ray revealed a fracture of her tibia in the metaphyseal region, close to the distal epiphysis. The fracture line runs at an angle through the diaphysis but does not penetrate the skin. Based on the description, what type of fracture did Maya most likely sustain?