Sensory perception

Question 1

What does hearing help with? (5)

Answer 1

• equilibrium
• orientation
• balance
• direction of gravity
• detection of vibrations

Question 2

What does the lateral line system help with? (2)

Answer 2

• detection of vibrations/water movements
• orientation to direction of disturbance, prey detection/predator avoidance

Question 3

How much faster does sound travel in water compared to air?

Answer 3

• 4.8x
• 330 vs 1500 m/s

Question 4

What are vibrations of molecules picked up by?

Answer 4

• inner ear

Question 5

What kind of transduction does the inner ear use?

Answer 5

• mechanico-electric

Question 6

What does the swim bladder do in herring and carp?

Answer 6

• connection to inner ear that amplifies perception of higher frequency sounds

Question 7

What does the swim bladder do in ostariphysans?

Answer 7

• connected to inner ear via weberian apparatus to improve hearing (like inner ear bone)

Question 8

What detects water movements on the lateral line? What are the water movements?

Answer 8

• mechanoreceptors (neuromasts)
• vibration/pressure