Sensory Biology And Animal Behaviour Flashcards
(25 cards)
What receptors detect light
Photoreceptors
What receptors detect smell, taste and pheromones
Chemoreceptors
What receptors detect touch and auditory sense
Mechanoreceptors
What is the sensory region of the brain
Thalamus
What type of eyes do insects have
Compound eyes - detect motion
What do eyespots detect
Light and dark
What is the ability of single lens eyes
Focus on an image
How many types of cone cells do dogs have, how does this effect the vision
Have 2 types
See a lower vibrancy of colour
Why do cats have more rods
Better night vision, able to sense movement (prey)
How many cones do birds have, what is the importance
Over 3 - (tetrachromatic)
Sexual signaling - females select bright coloured males as it shows their health
What type of eye position do preditors have
Binocular
What type of eye position do prey have
Monocular
Where is the horse blindspot
Upclose and in front
Describe olfaction
Detection of odorants (airborne chemicals)
Describe gestation
Detection of tastants (dissolved chemicals)
What is nepetalactone
Compound found in catnip - cause rubbing + protection against mosquitos
What is the Flehmen response
Curing up the lip to expose the vomeronasal organ
What muscle curls up the lip
Lavator labii superioris
How do pheromones cause a hormonal response
Vomeronasal organ stimulated
Sends impulse to VN bulb (accessory olfactory bulb)
Sends signal to amygdala (part of limbic system)
Then to hypothalamus, triggers GNRH release
Triggers FSH and LH secretion from adenohypophysis
Name some functions of pheromones
Sexual attraction.
Territorial marking
Security
Recognition
How do snakes detect heat from prey
Pits (organ) (holes in the Rostral region of the cranium
What’s re some functions of mechanoreceptors
Communication
Travel
Hearing
Temperature detection
Touch
How do fish detect vibrations
Lateral organ
How do elephant nose fish sense predators
Electrical impulses
