1.Vision is a representation of an animal’s immediate environment. This ability

Question

1.Vision is a representation of an animal’s immediate environment. This ability depends upon photoreception, sensory input, information relay, and central integration. Where does sensory input from retinal ganglion cells occur?

midbrain

thalamus

sensory cortex

2. Where are the neurons that enable depth perception, pattern discrimination, goal definition, and an on-going comparison between path and goal once forward motion begins?

midbrain

thalamus

cerebral cortex

3. Which pair of fiber tracts enables voluntary motion?

tectospinal

vestibulospinal

corticospinal

4. Motivated behavior depends on information sharing between:

spinal cord and cerebellum

thalamus and cerebral cortex

cerebellum and cerebral cortex

hypothalamus and limbic cortex

5. Once initiated, forward motion is enabled by a central pattern generator. This term denotes control of spinal cord interneurons via input from:

premotor neurons in the cerebral cortex

premotor neurons in brainstem nuclei

proprioceptors and mechanoreceptors in legs and feet

6. Animals can fix their gaze as they move towards objects of interest. This ability is enabled by the vestibulo-ocular reflex. In other words, the movement of the head through space – as detected by vestibular cells – enables extrinsic eye muscles to move the eyes within their orbits. Axons from the -motor neurons that innervate extrinsic eye muscles are found within:

cranial nerve pair III (oculomotor)

cranial nerve pair IV (trochlear)

cranial nerve pair VI (abducens)

all of the above

Explanation / Answer

1. Sensory input from retinal ganglion cells occur: Thalamus

2. neurons that enable depth perception, pattern discrimination, goal definition, and an on-going comparison between path and goal once forward motion begins: Cerebral Cortex

3. fiber tracts enables voluntary motion: Corticospinal

4. Motivated behavior depends on information sharing between: Cerebellum and cerebral cortex

5. forward motion is enabled by a central pattern generator. This term denotes control of spinal cord interneurons via input from: Premotor neurons in brainstem nuclei

6.  Axons from the -motor neurons that innervate extrinsic eye muscles are found within: cranial nerve pair VI (abducens)

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