Question 1

Different groups of cone cells are specialized for absorption in all the following regions of the visible spectrum except&#10;A)Green&#10;B)Red&#10;C)Blue&#10;D)Yellow

Accepted Answer

Cone cells in the human eye are specialized for absorption in the blue, green, and red regions of the visible spectrum, but not directly for yellow. Yellow light is perceived when both red and green cones are stimulated.

Question 2

Deep pressure on the skin is sensed by&#10;A)Free nerve endings&#10;B)Meissner\s corpuscles&#10;C)Pacinian corpuscles&#10;D)Merkel\s discs

Accepted Answer

Pacinian corpuscles are specialized nerve endings in the skin that respond to deep pressure and vibration, making them the correct answer for sensing deep pressure on the skin.

Question 3

Of the four basic taste modalities, the one most limited to the tip of the tongue is&#10;A)Bitter&#10;B)Sour&#10;C)Salty&#10;D)Sweet

Accepted Answer

The traditional tongue map suggests that the tip of the tongue is most sensitive to sweet tastes. However, it's important to note that modern research has shown that all parts of the tongue can detect all tastes to some extent, but the tip of the tongue is still often associated with heightened sensitivity to sweetness.

Question 4

Olfaction (smell) differs from other sensory modalities because it&#10;A)Does not transmit to the cerebral cortex but only to lower brain centers.&#10;B)Does not transmit to the cerebral cortex via the thalamus&#10;C)Can function as either an interoceptor or exteroceptor&#10;D)Uses lateral inhibition

Accepted Answer

Olfaction is unique among the senses because it does not transmit signals to the cerebral cortex via the thalamus. Instead, olfactory information is sent directly to the olfactory cortex, bypassing the thalamus, which is a relay station for other sensory modalities.

Question 5

Hair cells are involved in all of the following receptors except&#10;A)Semicircular canals&#10;B)The cochlea&#10;C)Taste buds&#10;D)The urethra

Accepted Answer

Taste buds are not involved in hair cells.

Question 6

Sound waves travel from the air to the tympanic membrane by way of the ;&#10;A)Pinna&#10;B)Auditory tube&#10;C)external auditory meatus&#10;D)Cochlear duct

Accepted Answer

The external auditory meatus is the canal that leads from the pinna to the tympanic membrane. Sound waves travel through this canal to reach the tympanic membrane.

Question 7

The sensory hair cells of the cochlea organ of Corti are anchored on the&#10;A)Basilar membrane&#10;B)Vestibular membrane&#10;C)Tectorial membrane&#10;D)Tympanic membrane

Accepted Answer

The sensory hair cells of the cochlea's organ of Corti are anchored on the Basilar membrane. This membrane plays a crucial role in the process of hearing by vibrating in response to sound, which in turn stimulates the hair cells to send nerve impulses to the brain.

Question 8

The optic nerve and blood vessels exits the eye, and arteries enter it, at the&#10;A)optic chiasma&#10;B)Macula&#10;C)fovea centralis&#10;D)optic disc

Accepted Answer

The optic disc is the point on the retina where the optic nerve fibers exit the eye and the central retinal artery enters. This area is also known as the blind spot because it lacks photoreceptor cells, making it insensitive to light.

Question 9

The ability of the eyes to keep an image focused on the retina despite changes in the distance to the object viewed is called&#10;A)Refraction&#10;B)Hyperopia&#10;C)Adaptation&#10;D)Accommodation

Accepted Answer

Accommodation is the process by which the eye changes optical power to maintain a clear image or focus on an object as its distance varies.

Question 10

Which of the following does not belong with the rest?&#10;A)Rod cells&#10;B)Amacrine cells&#10;C)Bipolar cells&#10;D)Ganglion cells

Accepted Answer

Rod cells are different from the others listed because they are photoreceptor cells responsible for vision in low light conditions, whereas amacrine cells, bipolar cells, and ganglion cells are all types of neurons involved in the processing and transmission of visual information within the retina, but they do not directly respond to light.

Question 11

____________ are the basic units of communication in the nervous system.&#10;A)Cells&#10;B)Neurons&#10;C)Axons&#10;D)Dendrites

Accepted Answer

The answer of ____________ are the basic units of communication...

Question 12

______________ help neurons by providing nutrition, removing waste products, and enhancing the speed of communication between neurons.&#10;A)Axons&#10;B)Dendrites&#10;C)Glial cells&#10;D)Cell body

Accepted Answer

The answer of ______________ help neurons by providing nutrition, removing...

Question 13

The three basic components of the neurons are ____________, ___________ and ____________.&#10;A)Cell body, Glial cells and Axon&#10;B)Dendrites, Axon and Glial cells&#10;C)Axon, Cell body and Synapse&#10;D)Cell body, Axon and Dendrites

Accepted Answer

The answer of The three basic components of the neurons...

Question 14

The _________________ is a white, fatty covering made up of glial cells that increases the rate at which neural messages are sent.&#10;A)Glial cell&#10;B)Endocrine&#10;C)Axon terminal&#10;D)Myelin sheath

Accepted Answer

The answer of The _________________ is a white, fatty covering...

Question 15

Within the neuron, information is communicated in the form of brief electrical messages called _______________.&#10;A)Myelin sheath&#10;B)Synapse&#10;C)Action potential&#10;D)Neurotransmitter

Accepted Answer

The answer of Within the neuron, information is communicated in...

Question 16

The _______________ is the minimum level of stimulation required to activate a particular neuron.&#10;A)Stimulus threshold&#10;B)Action potential&#10;C)Synaptic transmission&#10;D)Neurotransmission

Accepted Answer

The answer of The _______________ is the minimum level of...

Question 17

The synaptic vesicles contain chemicals called _______________.&#10;A)Synaptic gap&#10;B)Neurotransmitter&#10;C)Interneurons&#10;D)Myelin sheath

Accepted Answer

The answer of The synaptic vesicles contain chemicals called _______________.&#10;A)Synaptic...

Question 18

________________ is the process by which neurotransmitter molecules detach from a postsynaptic neuron and are reabsorbed by the presynaptic neuron so they can be recycled and used again.&#10;A)Inhibitory&#10;B)Excitatory&#10;C)Action potential&#10;D)Reuptake

Accepted Answer

The answer of ________________ is the process by which neurotransmitter...

Question 19

Our ability to perceive, feel, think, move, act and react depends on the delicate balance of ___________________ in the nervous system.&#10;A)Neurotransmitter&#10;B)Nervous cell&#10;C)Neurons&#10;D)Brain

Accepted Answer

The answer of Our ability to perceive, feel, think, move,...

Question 20

_______________ stimulates muscle contractions and is involved in memory functions.&#10;A)Acetylcholine&#10;B)Norepinephrine&#10;C)Dopamine&#10;D)Serotonin

Accepted Answer

The answer of _______________ stimulates muscle contractions and is involved...

Question 21

________________ is involved in a number of functions, including movement, attention and learning and abnormal levels are involved in some mental disorders.&#10;A)Acetylcholine&#10;B)Norepinephrine&#10;C)Dopamine&#10;D)Serotonin&#10;

Accepted Answer

The answer of ________________ is involved in a number of...

Question 22

_________________ is involved in sleep, moods and emotional states, including depression.&#10;A)Acetylcholine&#10;B)Norepinephrine&#10;C)Dopamine&#10;D)Serotonin

Accepted Answer

The answer of _________________ is involved in sleep, moods and...

Question 23

________________ has been implicated in some mental disorders and is involved in activation of neurons throughout the brain and in the process of learning and memory retrieval.&#10;A)Acetylcholine&#10;B)Norepinephrine&#10;C)Dopamine&#10;D)Serotonin&#10;

Accepted Answer

The answer of ________________ has been implicated in some mental...

Question 24

_________________ usually communicates inhibitory messages to other neurons and helps balance and offset excitatory messages.&#10;A)Gamma-aminobutyric acid (GABA)&#10;B)Norepinephrine&#10;C)Dopamine&#10;D)Serotonin&#10;

Accepted Answer

The answer of _________________ usually communicates inhibitory messages to other...

Deck 9: Sensory and Neural Systems