Chapter 9 Adaptive Questions

The release of neurotransmitter by taste receptor cells is most directly triggered by?

Calcium

What type of receptor is present in olfactory receptors that is important for olfactory transduction?

Metabotropic

Axons leave the retina via the?

Optic nerve

The two types of photoreceptors are the _____, which contribute to night vision, and the _____, which contribute to day vision.

Rods and Cones

Activation of which type of taste receptors involves ionotropic receptors?

Salty and sour

Accommodation allows the eye to focus on a close object by altering the

Shape of the lens

How is stimulus location encoded by the nervous system?

based on the topographic organization of neural pathways

Which of the following lists contains the five primary tastes?

bitter, salty, sour, sweet, and umami

Second-order neurons are which type of neuron?

interneurons

Richell has a skiing accident and damages her primary somatosensory cortex. What might Richell have problems doing after her injury?

knowing whether someone is touching her hand or wrist without looking

If you were to cut the left optic nerve in someone, they would no longer be able to see visual stimuli coming from the?

left nasal retina and left temporal retina

Ryan has an accident that damages his cervical spinal cord so that the neurons on the left side are destroyed. A doctor testing sensation in Ryan's legs, would find that Ryan can no longer perceive temperature or pain sensations in his ______ leg, and touch or pressure on his ______ leg.

left; right

Which type of receptor would respond to a sharp pinch?

mechanical nociceptor

The axons of first order olfactory neurons travel in the?

olfactory nerve

What happens as cation channels open due to sound waves moving hair cells?

potassium enters and depolarizes the cells

Chelsea develops an ear infection that affects function of her vestibular system. Which symptom would you expect her to experience?

problems with balance

In which sensory systems are receptive fields actual physical areas?

somatic and visual

Which of the following is the correct sequence of events in a sensory receptor during the process of sensation?

stimulus, transduction, graded potential, action potential

Which structure vibrates when sound waves hit it and transmits those vibrations to the middle ear?

tympanic membrane