Exam 2 Practice

Question 1

What are the factors contributing to the uneven distribution of ions when the neuron is at rest?

Answer 1

Selective permeability of certain ions and sodium potassium pumps

Question 2

Which ion first rushes into a cell when the threshold of excitation has occurred?

Answer 2

Sodium

Question 3

Which of the type of receptor is directly activated by a neurotransmitter?

Answer 3

Ionotropic receptors

Question 4

In Parkinson’s disease, there is too little _______ and in Alzheimer’s disease, there is too little _______

Answer 4

Dopamine; Acetylcholine

Question 5

Compared with fMRI, EEG has worse ____ resolution and better _____ resolution

Answer 5

Spatial; temporal

Question 6

What are the factors contributing to the even distribution of ions when the neuron is at rest?

Answer 6

Random motion and Electrostatic pressure