A child eats a meal containing bread, butter, and chicken. Which sequence best describes how the major nutrients in this meal are digested in the body?

• All nutrients are digested only in the small intestine.

• Carbohydrates begin digestion in the mouth, fats in the mouth and stomach, and proteins in the stomach and small intestine.
  

• Carbohydrates are digested in the stomach, fats in the mouth, and proteins in the small intestine.

• Carbohydrates are digested in the stomach, fats in the mouth, and proteins in the small intestine.

What is the main muscle responsible for breathing?

• Intercostal muscles

• Diaphragm

• Abdominal muscles

• Pectoralis major

Which part of the brain controls the rate of respiration?

• Cerebellum

• Cerebrum

• Hypothalamus

• Medulla oblongata

During inhalation, what happens to the pressure inside the lungs compared to the atmospheric pressure?

• It becomes greater

• It becomes lower

• It remains the same

• It becomes equal

A patient has damage to the alveolar walls, leading to reduced surface area for gas exchange. What condition does this most likely indicate?

• Asthma

• Bronchitis

• Emphysema

• Pneumonia

What structure prevents food from entering the windpipe during swallowing?

• Hard palate

• Tongue

• Epiglottis

• Uvula

(honest reaction ni sir kapag d mo nasagot) A 25-year-old female presents with obesity, hirsutism, and infertility. Ultrasound shows multiple immature follicles. What is the most likely diagnosis?

• Ovarian tumor

• Premature ovarian failure

• Corpus luteum cyst

• Polycystic Ovary Syndrome (PCOS)

If the vas deferens is blocked, which reproductive function is directly impaired?

• Testosterone secretion

• Sperm storage

• Seminal fluid production

• Sperm transport

Which compensation mechanism is expected in metabolic acidosis?

• 
  Increased ventilation to reduce CO2

• Decreased kidney secretion of hydrogen ions

• 
  Decrease in respiratory rate to retain CO2

• 
  Retention of bicarbonate by the lungs

Food passes quickly through the esophagus by coordinated muscular contractions. What process is responsible?

• Segmentation

• Emulsification

• Peristalsis

• Churning