Which of the following was the key characteristic of early humans that allowed them to effectively out-compete other species?

Question 1 of 20

5.0 Points

Which of the following is a key a function of the glial cells?

[removed] A. Protection of the outer surface of the brain
[removed] B. Removal of physical debris from the brain
[removed] C. Secretion of CSF in the brain
[removed] D. Movement of vesicles along the axon

Question 2 of 20

5.0 Points

__________ neurons gather information from the environment related to light, odors, and contact of our skin with objects.

[removed] A. Sensory
[removed] B. Motor
[removed] C. Inter-
[removed] D. Relay inter-

Question 3 of 20

5.0 Points

The difference in electrical charge between the inside and the outside of the axon membrane is defined as the __________ potential.

[removed] A. membrane
[removed] B. local
[removed] C. glial
[removed] D. action

Question 4 of 20

5.0 Points

__________ is thought to be an advantage associated with the development of color vision in primates.

[removed]

A. The ability to breed at night

[removed]

B. The ability to move in the forest at night

[removed]

C. The capacity to discriminate ripe from unripe fruit

[removed]

D. The capacity to communicate using symbols

Question 5 of 20

5.0 Points

Synaptic vesicles are produced in the:

[removed] A. neuron soma.
[removed] B. dendrites.
[removed] C. glial cells.
[removed] D. neuron lysosomes.

Question 6 of 20

5.0 Points

The most common neuron type in the central nervous system is the __________ neuron.

[removed]

A. multipolar

[removed]

B. apolar

[removed]

C. sensory

[removed]

D. bipolar

Question 7 of 20

5.0 Points

A drug that inactivates the enzyme acetylcholinesterase would be expected to:

[removed] A. prolong the effects of acetylcholine in the synapse.
[removed] B. terminate the effects of acetylcholine in the synapse.
[removed] C. speed up the synthesis of acetylcholine.
[removed] D. impair the synthesis of acetylcholine.

Question 8 of 20

5.0 Points

Johannes Müller proposed:

[removed] A. an important role for natural selection in the evolution of behavior.
[removed] B. that language is a function of the right hemisphere.
[removed] C. that the brain is divided into different functional areas with each receiving signals from a different set of nerves.
[removed] D. that the pineal body allows the brain to control the mind.

Question 9 of 20

5.0 Points

__________ are physicians trained to diagnose and to treat central nervous system diseases.

[removed] A. Psychologists
[removed] B. Neurologists
[removed] C. Anatomists
[removed] D. Behavioral neuroscientists

Question 10 of 20

5.0 Points

A large, dense-core vesicle found in the axon terminal is likely to contain:

[removed] A. peptide neurotransmitters.
[removed] B. neurotransmitter receptors.
[removed] C. enzymes that degrade transmitter molecules.
[removed] D. synthesis peptides.

Question 11 of 20

5.0 Points

__________ neurons function to contract muscles.

[removed] A. Sensory
[removed] B. Motor
[removed] C. Inter-
[removed] D. Relay

Question 12 of 20

5.0 Points

The principle of natural selection proposes that certain characteristics that __________ will become more prevalent in a species.

[removed]

A. are associated with multiple genetic mutations

[removed]

B. inhibit reproductive behaviors

[removed]

C. increase reproductive success

[removed]

D. impair adaption to the local environment

Question 13 of 20

5.0 Points

A drug that specifically killed the __________ cells would be expected to alter the physical and nutritional support of brain cells.

[removed] A. phagocyte
[removed] B. Schwann
[removed] C. microglia
[removed] D. astrocyte

Question 14 of 20

5.0 Points

The nucleus of the nerve cell is located within the:

[removed] A. soma.
[removed] B. axon.
[removed] C. axon terminals.
[removed] D. dendrites.

Question 15 of 20

5.0 Points

__________ are located only within the central nervous system.

[removed] A. Sensory
[removed] B. Motor
[removed] C. Relay interneurons
[removed] D. Projection neurons

Question 16 of 20

5.0 Points

A scientific explanation of a complex phenomenon that is cast in terms of a simpler one involves the process of:

[removed] A. rationalization.
[removed] B. reduction
[removed] C. falsification.
[removed] D. generalization.

Question 17 of 20

5.0 Points

The most common neuron type in the central nervous system is the __________ neuron.

[removed] A. multipolar
[removed] B. apolar
[removed] C. sensory
[removed] D. bipolar

Question 18 of 20

5.0 Points

Placing neurons and their synaptic contacts into a medium containing no calcium ions would be expected to: