Chapter 11

Question 0

Which of the following influences the speed of an action potential

Answer 0

Both the presence of myelin sheath and the diameter of Axon

Question 1

Which of the following statements correctly characterize an action potential

Answer 1

Action potentials are initiated by depolarization of the membrane to threshold

Question 2

Which of the following cell types makes up the majority of cells in the nervous system

Answer 2

Neuroglial cells

Question 3

What do multiple sclerosis and ALS have in common

Answer 3

They both damage the myelin sheath, slowing action potential transmission.

Question 4

All of the following are directly involved in synaptic transmission except

Answer 4

Voltage sensitive ion channels in the post synaptic membrane.

Question 5

An _______ neurotransmitter causes _______ of the post synaptic membrane.

Answer 5

Both b and c

Question 6

Information coming into the central nervous system arrives via ________ while information going from the central nervous system to the muscles glands and organs travel via ________

Answer 6

Sensory neurons

Motor neurons

Question 7

The brain and spinal cord make up the

Answer 7

Central nervous system

Question 8

A spinal reflects requires the participation of each of the following except

Answer 8

Cerebral cortex

Question 9

Which of the following would cause an acceleration of heart rate and increase in blood pressure and a slowing of digestive processes

Answer 9

Sympathetic division of the autonomic nervous system

Question 10

Which part of the brain is responsible for regulating the heart and respiratory rates and blood pressure

Answer 10

Medulla oblongata

Question 11

The coordination necessary for musicians to play the piano depends on control exerted by the

Answer 11

Cerebellum

Question 12

All the following are associated with storage of long-term memory except

Answer 12

Limbic system

Question 13

Which of the following is characteristic of psycho active drugs

Answer 13

The altar levels of neurotransmitters

Question 14

Which of the following statements regarding infections of the nervous system is accurate

Answer 14

Bacterial meningitis is generally more severe than viral meningitis

Question 15

Which of the following ions are directly involved in the generation of an action potential

Answer 15

Sodium ions and potassium ions

Question 16

An action potential will be generated when the sum of all graded potentials reaches

Answer 16

Threshold

Question 17

The action of neurotransmitters is very fleeting due to their prompt removal from the synthetic cleft all of the following are strategies for rapid removal of neurotransmitters except

Answer 17

Rapid uptake of the neurotransmitter by the postsynaptic neuron

Question 18

Short-term memory occurs in

Answer 18

The limbic system

Question 19

Excitatory neurotransmitters ______

Answer 19

Result in depolarization of the postsynaptic membrane

Question 20

What event at the axon terminal’s is stimulated by the action potential

Answer 20

The release of a no transmitter in the synapse

Question 21

Which neuroglial cells form the myelin sheath on axon in the CNS and are attacked and lost in the disease multiple sclerosis

Answer 21

Oligodendrocytes

Question 22

Which of these statements concerning psychoactive drugs is false

Answer 22

Psychoactive drugs cannot cross the blood brain barrier

Question 23

Central nervous system _____

Answer 23

Receives processes and stores information

Question 24

Where is cerebrospinal fluid found in the brain

Answer 24

In the ventricles and between the arachnoid and pis mater

Question 25

Parkinson's disease is caused by

Answer 25

A shortage of dopamine

Question 26

What ion enters the axon terminus during an action potential and results in the release of neurotransmitter in the synapse

Answer 26

Calcium ions

Question 27

When one neuron transmits an impulse to many neurons this is known as

Answer 27

Divergence

Question 28

The ability to use and understand language make decisions and engage in conscience thought are located in the

Answer 28

Thalamus | Cerebrum

Question 29

Young boy receives an injury to the back of his head and is now having problems with balance. What area of the brain has probably been injured

Answer 29

Cerebellum

Question 30

The motor division of the PNS carries info from the CNS

Answer 30

True

Question 31

Dendrites are slender extensions of the cell body that carry information away from the cell body of the neuron

Answer 31

False

Question 32

The meninges are four chambers in the brain that are filed with cerebrospinal fluid

Answer 32

False

Question 33

Motor neurons serving smooth and cardiac muscle are part of the somatic nervous system

Answer 33

False

Question 34

Psychoactive drugs may act by altering the concentration of no transmitters in the brain

Answer 34

True

Question 35

Spinal reflexes are voluntary responses to stimuli and often act to protect the body

Answer 35

False

Question 36

The hidden brain is the region that receives and integrates sensory input from the external environment and determines most of our more complex behavior

Answer 36

False

Question 37

Inhibitory neurotransmitters cause the hyperpolarization of the postsynaptic cell

Answer 37

True

Question 38

Alzheimer's disease is a disorder of memory impairment and Parkinson's disease affects physical activity

Answer 38

True

Question 39

Schwann cells produce a carbohydrate like insulating material called myelin

Answer 39

False

Question 40

The hypothalamus maintains homeostasis and regulates temperature control, water balance

Answer 40

True

Question 41

The reticular activating system is located near the base of the forebrain and influences emotions

Answer 41

False

Question 42

The resting membrane potential of is when the inside of the neuron is more negatively charged in the outside of the neuron

Answer 42

True

Question 43

An action potential is a sudden temporary reversal of voltage difference across the cell membrane of neuron

Answer 43

True

Question 44

The sympathetic division of the automatic nervous system is responsible for the fight or flight response.

Answer 44

True