Name: ______Date: ______Period: _____
Nervous Structure Worksheet # 1 Mr. Vorstadt
Choose the response which best completes the following statements or answers the following questions.
_____ 1. A portion of a nervous system
illustrated in the diagram. Structure X
represents
(1.) a white blood cell
(2.) a red blood cell
(3.) a interneuron
(4.) a neuron
_____ 2. In the human nervous system, synapses are located directly between
(1.) cytons and axons (2.) axons and terminal branches
(3.) dendrites and axons (4.) terminal branches and dendrites
_____ 3. Which statement describes a
relationship between the human
cells illustrated in the
diagrams ?
(1.) A is produced by D.
(2.) B may cause D to contract.
(3.) B is used to repair C.
(4.) C transports oxygen to A.
_____4. The diagram represents a neuron.
Which number indicates the area where a stimulus is detected and an electrochemical impulse is conducted to the nucleus?
(1.) 1 (2.) 2 (3.) 3 (4.) 4
_____ 5. A change that initiates an electrochemical message along a neuron is known as
(1.) a response (2.) a synapse (3.) an impulse (4.) a stimulus
_____ 6. Which substances are secreted at the endings of nerve cells?
1. antigens 2. neurotransmitters 3. Lipids 4. antibodies
_____7. Which part of the human central nervous system is correctly paired with its function?
(1.) cerebellum -- serves as the center for reflex actions
(2.) spinal cord - coordinates learning activities
(3.) cerebrum - serves as the center for memory and reasoning
(4.) medulla - maintains muscular coordination
_____8. The portion of the brain directly involved with coordinating voluntary actions or
voluntary motor responses is the
(1.) spinal cord (2.) cerebellum (3.) medulla (4.) cerebrum
_____9. When a child runs to his mother after hearing a clap of thunder, the clap of thunder
would serve the nervous system role of acting as a(n)
(1.) effector (2.) stimulus (3.) response (4.) none of these
_____10. A change in the external or internal environment of an organism is known as
(1.) an impulse (2.) a stimulus (3.) response (4.) a synapse
_____11. Adding one drop of dilute hydrochloric acid to the water surrounding a hydra caused
the hydra to contract. The acid acted as
(1.) a response (2.) an impulse (3.) a neurotransmitter (4.) a stimulus
_____12. Which is an activity controlled primarily by the cerebellum?
(1.) thinking (2.) maintaining balance
(3.) breathing (4.) regulating your heartbeat
Correctly complete the following statements.
13. The portion of the brain which coordinates motor activities and balance is the
______.
14. A change in the surroundings or the environment that triggers a nerve impulse is called a(n)
______.
15. The portion of the brain which controls involuntary activities such as heart beating and
breathing is the ______.
16. The portion of the brain which controls thinking is the ______.
Correctly identify the following components of the human nervous system and briefly state their functions.
1.
2.
3.
4.
In the space provided before the description, write the letter of the structure to which it corresponds.
_____ 1. Synapse
_____ 2. Cell Body
_____ 3 Dendrites.
_____ 4. Axon
Match the letter item on the diagram with the correct term.
_____1- Stimulus _____2- Interneuron _____3- Sensory neuron
_____4- Effector (responds) _____5- Motor neuron
Nervous System
Across
2. Groups of tissues that perform a similar job
6. Gap between dendrites and adjacent cell
7. Pick up stimulus
8. Nerve cell
10. Quick automatic response to stimulus
11. Sheath Insulation around axon
12. Organisms keep internal conditions balanced
Down
1. Group of cells that do the same job
3. Longest part of neuron
4. Stem Controls involuntary actions
5. Largest part of brain
6. Any outside or internal change
9. Controls coordination and balance