The volume of air that remains in the lungs after a maximum forced expiration is called: MCQ with Answer and Explanation

Explanation:
Pertussis (whooping cough) is a respiratory infection characterized by severe coughing fits. Diphtheria is Corynebacterium, tetanus Clostridium, scarlet fever Streptococcus.

Explanation:
The cerebrum is the largest part of the brain, responsible for higher functions like voluntary motor actions, sensory processing, and intelligence. The cerebellum coordinates muscle movements and maintains posture and balance. The medulla oblongata contains vital centers controlling involuntary functions like heartbeat, breathing, and blood pressure. All three statements are correct.

Explanation:
Rheumatoid arthritis is a chronic inflammatory autoimmune disease where the immune system mistakenly attacks the body's own healthy tissues, specifically the synovial membranes of joints. This leads to painful swelling, bone erosion, and joint deformity. Other examples of autoimmune diseases include Type 1 diabetes, multiple sclerosis, and systemic lupus erythematosus.