Final

Question 1

A complete lesion of the left lateral geniculate nucleus produces which one of the following visual field defects?

Answer 1

Loss of the right visual field

Question 2

The optic nerve is composed of axons from which cell type?

Answer 2

Ganglion

Question 3

Humans can perceive complex sounds containing different frequencies because the basilar membrane

Answer 3

simultaneously vibrates at multiple locations along its length

Question 4

The voltage-gated K channel (VGKC) is also called a delayed rectifier because

Answer 4

it opens AFTER the opening of the voyages gated Na china and rests the membrane potential to the resting membrane potential

Question 5

What comes first in the release of neurotransmitters from synaptic vesicles

Answer 5

Docking

Question 6

The transmission of electrical signals from one neurons to another neuron

Answer 6

is slower in chemical synapses that in electrical synapses

Question 7

Changing the number Ca channels in a chemical synapse is an example of which mechanism of synaptic plasticity

Answer 7

Presynaptic modulation

Question 8

Humans cannot use x rays vision because

Answer 8

x-rays contain too much energy and destroys rhodopsin

Question 9

Which neurotransmitter binds to the nicotinic receptor?

Answer 9

Acetylcholine

Question 10

The detection of sugar molecules by taste cells on the tongue requires

Answer 10

Ca stimulated NT release from synaptic vesicles

Question 11

The detection of light in the eye is based upon the light induced change of

Answer 11

cis-retinal to trans-retinal

Question 12

Saltatory conduction of action potentials requires

Answer 12

oligondendrocytes

Question 13

The period of excitability during which a greater than normal strength of stimulus is required to elicit an nerve cell response is the _______

Answer 13

Relative refractory period

Question 14

Cone cells in the human eye have different optimal sensitivity spectra: blue, green, and red. These difference are the result of

Answer 14

differences in opsin

Question 15

The function of ganglion receptive fields is to______

Answer 15

• Distinguish bright objects against a dark background by the ON ganglion
• Distinguish dimmer objects against their background by the OFF ganglion cells

Question 16

Primary role of calcium in the activation of SKELETAL muscle is to

Answer 16

remove the inhibition of the reaction between actin filaments and myosin filaments

Question 17

Primary role of calcium in the activation of SMOOTH muscle is to

Answer 17

activate myosin molecules so they can interact with actin filaments

Question 18

As the intensity of stimulation increases, more and more muscles fibers will become activation. This process is called_____

Answer 18

Recruitment

Question 19

During aerobic conditions in the animal cell_____

Answer 19

more ATP is produced in the mitochondria than in the cytoplasm

Question 20

Which chemicals are synthesized in the presynaptic terminals and packaged in clear -core vesicles

Answer 20

small molecules neurotransmitters

Question 21

The detection of many individual odors by mammals is thought to be due to

Answer 21

combinational coding

Question 22

Conduction of action potentials along a nerve axons requires

Answer 22

a depolarization large enough to exceed threshold potential leading to the AP

Question 23

Lateral inhibition results_______

Answer 23

in an increase in stimulus contrast

Question 24

The function renshaw cells is to

Answer 24

inhibit the action of a chemical synapse

Question 25

Compared with fast chemical synaptic transmissions, a synapse with a slow chemical transmission

Answer 25

uses metabotropic receptors

Question 26

Which ion gate opens and closes the fastest

Answer 26

Voltage gated Sodium (VGNaC)

Question 27

What neurotransmitter is NOT packaged in vesicles

Answer 27

NO