Biol 1201 Licata Exam 5, Ch. 50
Study online at https://quizlet.com/_ihc2a2
1. Afferent nerves carry sensory information __________ the central nervous sys-
tem (CNS), while efferent nerves carry motor commands __________ the CNS: to-
wards -- away from
2. Sensory receptors can be actual nerves themselves or it can be an indepen-
dent sensory cell that forms a synapse with a nerve cell and actually releases
neurotransmitters to the cell which then goes to the CNS (true or false): true
3. Is the sensory cell that forms a synapse with a nerve cell considered a neu-
ron?: No (It does have some of the same characteristics and it communicates with them)
4. After the signal reaches the neuron there are a few different ways you can
detect different gradients of a sensory signal (true or false): true
5. If a single sensory receptor is activated (for this example one that detects
touch) and gentle pressure is applied, what type of frequency of action poten-
tials will occur? (Low or High): Low (If there is more pressure then there will be a higher frequency of
action potentials)
6. Can a single neuron detect different levels of sensory input?: Yes, there is a gradient
of responses for every different signal
7. Does more physical pressure activate more neurons?: Yes, it also increases the frequency
of action potentials in each one
8. Are there a lot of different ways to modulate the sensory input that is received
through touch or sight or sound at the single cell level and by how many cells
(neurons) are actually involved in receiving the signal?: Yes
9. In the epidermis there is one type of neurons (true or false): false (there is a variety
of different neurons in the epidermis)
10. Some examples of what the neurons detect in the epidermis include....: Pain,
pressure, etc
11. Are there certain neurons that can detect when you hair is being moved or
pulled out?: yes
12. There are no organisms that have sensory inputs that humans do not have
(true or false): False (there are a lot of organisms that have sensory inputs that humans do not have)
13. There are multiple examples of an organisms that have sensory receptors
that humans do not have. For example, a lot of insects have _________ __________-
: chemo receptors (similar to smell but they are actually they are detecting other chemicals using different receptors)
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, Biol 1201 Licata Exam 5, Ch. 50
Study online at https://quizlet.com/_ihc2a2
14. When insects use chemo receptors, do they operate similarly to the way
some of our senses/ receptors work?: Yes (but they are slightly different)
15. An example of a sensory receptor that snakes have and we don't are
___________ __________: infrared receptors (thermal receptor)
16. Do any organisms have electromagnetic sensory detection?: Yes, Beluga whales are
an example, they can detect the difference in north and south
17. Do cows have electromagnetic detection?: Yes
18. A ___________ is a primitive form of detecting gravity and is usually found in
vertebrae animals: statocysts (similar to what happens in human ear)
19. Statocysts are a bunch of sensory cells that have cilia on them that detect
mineral beads called _____________. Where the mineral beads are is communicat-
ed to the neurons and then to the CNS. Statocysts detect ______________: Statolith
-- Gravity
20. __________ is a hair like structure (often called hair cells): Cilia
21. Do a lot of insects have primitive ears?: yes
22. Small ear bones connect and amplify sounds from the ear drum into the
_____________: cochlea
23. What is the spiral organ deep in your ear called?: Cochlea (This is where you are actually
hearing things)
24. The cochlea has a _________ outer shell: bone
25. In the middle of the cochlea spiral are little parts called the Organ of _______-
: Corti
26. The _______ _____ __________ is where the actual detection of sound occurs: Or-
gan of Corti
27. In the Organ of Corti (where you hear) what are the little neurons called?: Hair
Cells
28. What are the two membranes called that run down the cochlea?: Tectorial
Membrane -- Basilar Membrane
29. What do the hair cells in the cochlea detect sound?: They detect when the membranes
vibrate
30. The membrane vibrates at a different place down the cochlea depending on
the ___________ of the noise you heard: frequency
2/9
Study online at https://quizlet.com/_ihc2a2
1. Afferent nerves carry sensory information __________ the central nervous sys-
tem (CNS), while efferent nerves carry motor commands __________ the CNS: to-
wards -- away from
2. Sensory receptors can be actual nerves themselves or it can be an indepen-
dent sensory cell that forms a synapse with a nerve cell and actually releases
neurotransmitters to the cell which then goes to the CNS (true or false): true
3. Is the sensory cell that forms a synapse with a nerve cell considered a neu-
ron?: No (It does have some of the same characteristics and it communicates with them)
4. After the signal reaches the neuron there are a few different ways you can
detect different gradients of a sensory signal (true or false): true
5. If a single sensory receptor is activated (for this example one that detects
touch) and gentle pressure is applied, what type of frequency of action poten-
tials will occur? (Low or High): Low (If there is more pressure then there will be a higher frequency of
action potentials)
6. Can a single neuron detect different levels of sensory input?: Yes, there is a gradient
of responses for every different signal
7. Does more physical pressure activate more neurons?: Yes, it also increases the frequency
of action potentials in each one
8. Are there a lot of different ways to modulate the sensory input that is received
through touch or sight or sound at the single cell level and by how many cells
(neurons) are actually involved in receiving the signal?: Yes
9. In the epidermis there is one type of neurons (true or false): false (there is a variety
of different neurons in the epidermis)
10. Some examples of what the neurons detect in the epidermis include....: Pain,
pressure, etc
11. Are there certain neurons that can detect when you hair is being moved or
pulled out?: yes
12. There are no organisms that have sensory inputs that humans do not have
(true or false): False (there are a lot of organisms that have sensory inputs that humans do not have)
13. There are multiple examples of an organisms that have sensory receptors
that humans do not have. For example, a lot of insects have _________ __________-
: chemo receptors (similar to smell but they are actually they are detecting other chemicals using different receptors)
1/9
, Biol 1201 Licata Exam 5, Ch. 50
Study online at https://quizlet.com/_ihc2a2
14. When insects use chemo receptors, do they operate similarly to the way
some of our senses/ receptors work?: Yes (but they are slightly different)
15. An example of a sensory receptor that snakes have and we don't are
___________ __________: infrared receptors (thermal receptor)
16. Do any organisms have electromagnetic sensory detection?: Yes, Beluga whales are
an example, they can detect the difference in north and south
17. Do cows have electromagnetic detection?: Yes
18. A ___________ is a primitive form of detecting gravity and is usually found in
vertebrae animals: statocysts (similar to what happens in human ear)
19. Statocysts are a bunch of sensory cells that have cilia on them that detect
mineral beads called _____________. Where the mineral beads are is communicat-
ed to the neurons and then to the CNS. Statocysts detect ______________: Statolith
-- Gravity
20. __________ is a hair like structure (often called hair cells): Cilia
21. Do a lot of insects have primitive ears?: yes
22. Small ear bones connect and amplify sounds from the ear drum into the
_____________: cochlea
23. What is the spiral organ deep in your ear called?: Cochlea (This is where you are actually
hearing things)
24. The cochlea has a _________ outer shell: bone
25. In the middle of the cochlea spiral are little parts called the Organ of _______-
: Corti
26. The _______ _____ __________ is where the actual detection of sound occurs: Or-
gan of Corti
27. In the Organ of Corti (where you hear) what are the little neurons called?: Hair
Cells
28. What are the two membranes called that run down the cochlea?: Tectorial
Membrane -- Basilar Membrane
29. What do the hair cells in the cochlea detect sound?: They detect when the membranes
vibrate
30. The membrane vibrates at a different place down the cochlea depending on
the ___________ of the noise you heard: frequency
2/9
