Sensory Systems — Flashcards

Flashcard 31: Amacrine cells produce _____polarizing potentials and spikes

Answer: de

Flashcard 32: The neural pathway from retina to visual cortex continues to develop till _____ years of age

Answer: 8

Flashcard 33: The _____ is an area of absolute scotoma in the visual field caused due to the absence of photoreceptors (rods and cones) in the region occupied by the optic disc.

Answer: physiological blind spot

Flashcard 34: Konio cells are involved in the transmission of _____.

Answer: color

Flashcard 35: Visible range of electromagnetic spectrum for the human eye is _____ nm.

Answer: 400 700

Flashcard 36: What is the value of endolymphatic potential?_____

Answer: +80mV

Flashcard 37: Presence of heat-seeking pit organ is a feature of _____ venomous snakes

Answer: Pit vipers (Crotalinae)

Extra: Pit organs (loreal pits) are specialized thermoreceptors located between the eye and the nostril. They detect infrared radiation (heat), allowing the snake to 'see' and locate warm-blooded prey in total darkness.

Flashcard 38: The rate of formation of aqueous humor is _____/min.

Answer: 2-3 μL (microliters)

Flashcard 39: What is the function of the VPL (ventral posterolateral) nucleus of the thalamus?

Answer: Relays sensory information from the body (pain, temperature, pressure, touch, vibration, and proprioception) to the somatosensory cortex.

Flashcard 40: Which optical pathway has high contrast gain?_____

Answer: Magnocellular