CH 2.1 Review Question's

Question 1

How well did Sherrington’s inferences about synapses harmonize with Cajal’s conclusions about the anatomy of neurons?

Answer 1

The two conclusions supported each other.

Question 2

The two conclusions supported each other.

Answer 2

Observations of reflexive responses

Question 3

Although one pinch did not cause a dog to flex its leg, a rapid sequence of pinches did. Sherrington cited this observation as evidence for what?

Answer 3

Temporal summation

Question 4

Although one pinch did not cause a dog to flex its leg, several simultaneous pinches at nearby locations did. Sherrington cited this observation as evidence for what?

Answer 4

Spatial Summation

Question 5

According to Sherrington, why do the extensor muscles of a leg relax when the flexor muscles contract?

Answer 5

Inhibitory connections in the spinal cord

Question 6

In the membrane of a neuron, what happens during an IPSP?

Answer 6

The potassium or chloride gates open.

Question 7

In what way were Sherrington’s conclusions important for psychology as well as neuroscience?

Answer 7

He demonstrated the importance of inhibition.