Which of the following best describes the lining epithelium of the respiratory region?

• Simple squamous epithelium with goblet cells

• Stratified squamous epithelium with cilia

• Pseudostratified columnar ciliated epithelium with goblet cells

• Transitional epithelium with mucous glands

Which type of epithelium primarily lines most of the nasal cavities and conducting portion of the respiratory system?

• Simple cuboidal epithelium

• Stratified squamous epithelium

• Pseudostratified ciliated columnar epithelium

• Transitional epithelium

Where are the olfactory chemoreceptors responsible for the sense of smell located?

• Respiratory epithelium

• Olfactory epithelium

• Alveolar epithelium

• Tracheal mucosa

In which species is the trachealis muscle found externally instead of internally?

• Horse

• Pig

• Ruminants

• Carnivores

What is the primary function of Type II pneumocytes in the alveoli?

• Gas exchange

• Producing mucus

• Producing surfactant to reduce surface tension

• Transporting oxygen into the bloodstream

Which characteristic of the tongue allows it to have a high level of mobility?

• The presence of papillae

• Its orientation within the oral cavity

• The arrangement of muscle fibers in multiple directions

• Its rich vascularization

What is the composition of the middle portion of the esophagus?

• Only skeletal muscle fibers

• Only smooth muscle fibers

• A combination of skeletal and smooth muscle fibers

• A mix of cardiac and smooth muscle fibers

Which part of the small intestine contains prominent Peyer’s patches?

• Duodenum

• Jejunum

• Ileum

• Cecum

What structures make up the portal triad in the liver?

• Hepatic artery, central vein, bile duct

• Portal vein, hepatic artery, bile duct

• Sinusoids, hepatocytes, bile canaliculi

• Hepatic artery, sinusoids, portal vein

Which of the following best defines the hepatic acinus?

• The basic structural unit of the liver based on a vascular perspective

• A hexagonal structure centered around the central vein

• A unit primarily responsible for bile production

• A structure that forms the bile ductules