Which part of the respiratory system is referred to as the "voice box"?

• Pharynx

• Trachea

• Larynx

• Bronchi

What is the function of alveoli in the respiratory system?

• To produce sound

• To exchange oxygen and carbon dioxide with blood

• To filter air

• To store nutrients

What is the function of the pleura in the respiratory system?

• It absorbs nutrients from food.

• It secretes digestive enzymes.

• It prevents the lungs from rubbing together.

• It aids in the contraction of stomach muscles.

Which organs are part of the alimentary canal in the digestive system?

• Liver, gallbladder, pancreas

• Mouth, pharynx, esophagus, stomach, intestines

• Teeth, tongue, salivary glands

• Lungs, heart, kidneys

What is the role of the submucosa in the digestive tract?

• It secretes mucus and digestive enzymes.

• It contains blood vessels, nerves, and glands.

• It is responsible for muscle contractions.

• It absorbs nutrients into the bloodstream.

What is the primary function of saliva during mastication?

• To break down proteins

• To moisten food and aid in mixing and swallowing

• To absorb nutrients

• To neutralize stomach acid

Which enzyme in saliva begins the chemical digestion of carbohydrates?

• Pepsin

• Lipase

• Salivary amylase

• Trypsin

What is the role of the esophagus in digestion?

• To secrete digestive enzymes

• To absorb nutrients

• To push nutrients into the pharynx

• To move nutrients to the stomach

What is the semi-liquid substance formed in the stomach called?

• Bolus

• Chyme

• Mucus

• Bile

What prevents the acidic gastric juices from digesting the stomach's own tissue?

• Cardiac sphincter

• Gastric juices

• Mucus and bicarbonate

• Salivary amylase