Biology 200: The Special Senses

Which type of receptors do taste and smell primarily use?

• Photoreceptors

• Mechanoreceptors

• Chemoreceptors

• Thermoreceptors

Which receptors are used by the sense of sight?

• Chemoreceptors

• Mechanoreceptors

• Photoreceptors

• Thermoreceptors

What type of receptors are primarily involved in hearing and maintaining equilibrium?

• Chemoreceptors

• Photoreceptors

• Mechanoreceptors

• Thermoreceptors

What are the projections on the tongue where most taste receptors are found called?

• Taste buds

• Papillae

• Glands

• Muscles

Approximately how many papillae are there on the human tongue?

• 4,000

• 10,000

• 1,000

• 20,000

How many taste buds are approximately found on the human tongue?

• 10,000

• 4,000

• 1,000

• 20,000

What is the approximate lifespan of gustatory cells before they are replaced?

• 5 days

• 10 days

• 20 days

• 30 days

What type of cells are gustatory cells?

• Muscle cells

• Epithelial cells

• Nerve cells

• Blood cells

What is the function of gustatory cells?

• They produce hormones

• They absorb nutrients

• They send signals to sensory neurons

• They protect against pathogens

Which cranial nerve is NOT involved in transmitting taste information to the brain?

• VII (facial)

• IX (glossopharyngeal)

• X (vagus)

• XI (accessory)