Human Biology Basic Nervous System and Senses
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What are the two main constituents of the central nervous system?
What is the highest level of the brain that is responsible for sensation?
What part of the eye refracts and focuses light rays?
Which part of the ear collects sound waves and filters air?
An involuntary and predictable response to a given stimulus is a
______________?
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Can you taste a jawbreaker correctly with your nose plugged?
Do two points 1mm apart on your skin feel like one point?
When your hand involuntarily pulls back from a candle, you;ve
experienced a
______.
Which eye structure aids in refracting and focusing light rays?
Which spiral organ is responsible for hearing?
Cranial nerves take nerve pulses to and from the _________.
What part of the brain is responsible for sensation?
Which part of the eye admits light?
Which part of the ear is responsible for hearing and rotational and
gravitational equilibrium?
What protects the spinal cord?
What two types of nerves are in the peripheral nervous system?
What is the cerebrum?
Which part of the eye regulates light entrance?
What part of the ear amplifies sound waves and equalizes are pressure?
White masses carry nerve pulses up and down the _______.
What are the two divisions of the nervous system?
What is one function of the human ear?
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What portion of the brain is the largest, the cerebrum, the cerebellum, or
the medulla?
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Name one type of neuron and describe its function.
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Rod cells and cone cells belong to what part of the human anatomy, the
eye, ear or skin?
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What part of the brain has centers for pleasure, reproductive behavior,
hostility, and pain: thalamus, medulla oblongata or hypothalamus?
What are the senses that rely on Chemoreceptors??
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What are the 4 taste sensations?
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In a conditions called_________, lens elasticity decreases with age
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What creates the reflex of the hand jerking from touching a hot or sharp
object? (3 steps)
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What are the two parts of the nervous system?
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Where on the retina is the blind spot located?
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What structures protect the spinal cord.
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Which reflex did we test with the rubber hammer?
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What is the most developed level of the brain called?
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Which cells make (a.) black and white sight possible? (b.)
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And color?
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(T/F): A reflex is a predictable response to a given stimulus
(T/F): Sensory neuron takes impulse from a sensory receptor to the spinal
cord
List the two functions of the human ear
Are the touch receptors in the skin evenly distributed?
The 4 taste sensations are:
Match:
a) Brain
1) Retina
b) Human eye
2) Tympanic membrane
c) Human ear
3) Cerebellum
d) Spinal cord
4) Vertebrae column
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What are nerve cells called?
What are the five major senses and their major organs we will study
today?
Where is the control center of the nervous system?
What part of the brain is responsible for sensation?
The nervous system is divided into the ___________nervous system
and ________nervous system.
What is accommodation?
Can the difference in hearing ability between 2 ears lead to a mistaken
judgement about the direction of sound. True or False?
How does your sense of smell effect your sense of taste?
When you touch something sharp or hot and you automatically pull
your hand back, this is called a ________.
Which layer of the skin contains the touch receptors?
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The nervous system is divided into the ___________ nervous system
and the peripheral nervous system.
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The medulla, pons, and midbrain together make up the
_____________.
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The purpose of the Optic nerve is to:
1.
2.
3.
4.
Protect and support the eyeball
Make color vision possible
Transmit impulses to the brain from the eye.
Transmit impulses to the brain from the ear.
Is the Pinna part of the the outer, middle, or inner ear? __________
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The sensory receptors in human ________ respond to touch, pain,
temperature, and pressure.
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What are chemoreceptors? Provide 2 examples. [Hint: They are in your
mouth and your nose.]
EXPLAIN:
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How viruses work to cause disease.
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Why antibiotics are useless against viruses.
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T / F
Human beings have 4 retinas, 2 in each eye, one in the front
and one in the back.
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T / F
The cerebellum is part of the peripheral nervous system.
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T / F
The spinal cord is protected by the vertebral column.
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During an assault, someone was hit in the head with a baseball bat. Due
to the head injury, the brain lost control breathing and cardiac functions.
The person therefore stopped breathing and died soon after. The
________________ was the part of the brain that was damaged in the
attack.
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The _________ lobe of the Cerebrum controls motor functions and
permits conscious muscle control. It is also responsible for the abilities to
think, speak, and solve problems.
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The _____________ is the part of the brain that controls pleasure, sex,
hostility and pain. It also controls appetite, body temperature, and water
balance.
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The ___________ admits light into the eye. [Hint: It is the opening in the
middle of the iris]
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Which part of the ear (outer, middle, or inner) helps maintain equilibrium
(balance)? ________.
The ___________ is the part of the eye that contains the rods and the
cones.
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Trace the path of light in the eye – from the exterior of the eye to the optic
nerve.
__________  ___________  ____________  ____________ 
___________  ________  Optic nerve
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T / F
“Don’t fire your gun until you see the whites of their eyes!”
The cornea is the part of the eye that is being referred to in this statement.
 The brain is part of the:
a) nervous system b) digestive system c) urinary system
system
d) cardiovascular
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Identify the part of the brain described as “The most developed area of the
brain and responsible for higher mental capabilities. It’s divided into right
and left hemispheres.”:
a) Cerebellum
b) Hypothalamus c) Midbrain
d) Cerebrum
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What kind of neuron has long axons and takes nerve impulses FROM a
sensory receptor TO the spinal cord?
a) sensory neuron b) interneuron
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c) motor neuron
d) gray matter
A spinal ________________ is an involuntary and predictable response
to a given stimulus, which was tested in class involving the patellar tendon
(knee-jerk).
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Identify the part of the human eye with the following location/function:
“opening in middle of iris/admits light”.
a) retina
b) optic nerve
c) pupil
d) cornea
 The location in each eye, where the optic nerve exits the retina and
rod/cone cells are absent, is called _________________
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You tested the nearest point at which the end of a pencil could be clearly
seen (focused). As you get older, this distance will increase (further from
your eyes) …….(True / False)
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The function of the pinna (outer ear) is to collect sound waves (True /
False)
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Human chemoreceptors were tested sensing heat and cold with your
hands
(True / False)
The four taste sensations were tested in the lab. Those are:
___________________________________
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What part of the brain is largest in humans?
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Can a difference in hearing between each of your ears change your
judgment about where the sound is coming from? Yes or no. BONUS:
Explain why.
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Can two points 1mm apart on your skin feel like one point? BONUS: Why
or why not?