Grade 12 Biology Test

22 Questions  I  By Miyoshimonster on December 8, 2008
Just a test I created to help myself study for my grade 12 midterm.

  

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1.  What is homeostasis?
A.
B.
2.  What are the 2 main divisions of the human nervous system?
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3.  What is the difference between the sympathetic nervous system and the parasympathetic nervous system?
4.  The [blank] cells, are non-conducting cells, which nourish and support nerve cells.
5.  The [blank] are the functional units of the nervous system, which conduct impulses. 
6.  The 3 types of neurons are,
A.
B.
C.
7.  Dendrites are shotm numerous, and branch out. They also [blank] incoming signals frmo sensory or interneurons and convey the signal to the [blank]
8.  What is another name for a cell body?
9.  What is the main function of the cell body?
10.  What are axons?
11.  Schwann cells do the following,
12.  The spaces between Schwann Cells are called,
A.
B.
C.
D.
13.  Describe the reflex arc
A.
B.
C.
D.
14.  Grey matter is found in the [blank] and are [blank]
15.  White matter is found in the [blank] and are [blank]
16.  What illness occurs, when the immune system attacks and destroys the myelin sheath surround the acons.
17.  During resting potental, the charge inside the cell is [blank] whereas the charge outside of the cell is [blank]
18.  Action Potentional works like this,
A.
B.
C.
19.  Action potention is an [black] response
20.  [Blank] potential is converted to a chemcial message at the synaptic [blank] between two neurons. The incoming [blank] potential in the pre-synaptic neuron causes vessicles containing [blank] molecules to fuse with the membrane. This relasese the neurotransmitters into the synaptic [blank], where they diffuse across to the post-synaptic neuron. The [blank] binds to the [blank] and opens a chemically-gated ion channel. When the channel opens, ions diffuse across the post-synaptic neuron and initiate an [blank] potential and the signal is successfully passed on. Then the [blank] is destroyed.
21.  Beurotransmitters taht open Na+ channels and depolarize the membrane initiating an action potentional are called [blank] stimulations.
A.
B.
C.
D.
22.  Neurotransmitters that open other channels that hyperpolarize the membrane and block an action potential are called, [blank]
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