13.5: Laboratory Activities and Assignment
- Page ID
- 53711
Laboratory Activities and Assignment
Part 1: Review of Introduction to the Nervous System
1. The diagram below shows a neuron with other neurons connected to it. In the blanks below, write the appropriate term for each numbered item from the choices listed below:
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1. _________________________ |
16.________________________ |
5. ________________________ |
17. ________________________ |
6. ________________________ |
18. ________________________ |
7. ________________________ |
21. ________________________ |
12. ________________________ |
22. ________________________ |
13., 14., 19., 25. _________________ |
23. ________________________ |
15. ________________________ |
2. Below is a microscopic image of neural tissue. What structural classification of neuron is this (pseudo unipolar, bipolar, or multipolar)? How do you know?
3. On the microscopic image of neural tissue below, label the following structures:
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4. For each of the descriptions below, indicate whether it refers to a sensory neuron or a motor neuron by writing either "sensory" or "motor" in the spaces provided.
a. ________________________ Neurons that carry olfactory (scent) information from the nose to the brain.
b. ________________________ Neurons that increase glandular secretions.
c. ________________________ Neurons that cause muscles controlling the jaw to contract during chewing.
d. ________________________ Neurons that transmit pain when stung by a bee.
e. ________________________ Also known as efferent neurons.
f. ________________________ Also known as afferent neurons.
g. ________________________ Neurons causes heart beats.
h. ________________________ Neurons causing diaphragm contractions to enable breathing.
i. ________________________ Neurons transmitting light information from the eyes to the brain.
j. ________________________ Neurons that cause smooth muscle in the blood vessels close to the skin to contract in cold weather to prevent heat loss through the skin.
k. ________________________ Neurons that collect and transmit auditory (sound) information to the brain.
l. ________________________ Neurons that sense the touch of an insect that lands on the skin.
m. ________________________ Neurons that sense an itchy feeling after being bitten by a mosquito.
n. ________________________ Neurons that cause the eyes to blink.
5. Below is an image of part of a cross section of a nerve. Note that this image is at a much higher magnification (400x) than the one shown in the chapter (100x). Identify the following structures in the image and label the image accordingly:
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6. Below are three different neurons. For each, indicate its structural classification (pseudounipolar, bipolar, or multipolar), and the types of functions each have in the human body (sensory neurons, motor neurons, or interneurons - some may have more than one).
7. Below is an illustration of neurons and glia in the CNS. Label each of the following:
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8. In the illustration above, there are two types of glia cells not shown.
a. Name the two types of glia cells that are not shown.
b. Why do these glia cells not belong in this illustration?
9. Multiple sclerosis is a demyelinating disease affecting the central nervous system. What type of cell would be the most likely target of this disease? Why?
Part 2: Introduction to the Nervous System Laboratory Activities
- Obtain the slides listed below that are available for today’s lab.
- Focus on each sample and identify the structures listed for each type of tissue.
- Indicate the total magnification you make each illustration at in the space provided.
- Illustrate each tissue you observe with the microscope at the magnification you listed.
- Label each illustration with the structures listed for each.
Central Nervous Tissue
Label the tissue with: neuron, cell body (neuron), nucleus (neuron), dendrite, axon, synapse, nuclei (glia), [pseudounipolar, bipolar, or multipolar, as appropriate for each neuron]
Dorsal Root Ganglion
Label the tissue with: cell body (neuron), nucleus (neuron), axons, Schwann cell nuclei, satellite cell nuclei, whether the neurons are sensory neurons or motor neurons
Peripheral Nerve (Cross Section)
Label the tissue with: epineurium, perineurium, fascicle, myelin sheath, axon
Neuromuscular Junction
Label the tissue with: muscle fiber, axon terminal, synapse
Attributions
Part 1: Review of Introduction to the Nervous System
- "Anatomy and Physiology I Lab" by Victoria Vidal is licensed under CC BY 4.0
- "Anatomy and Physiology Lab Homework" by Laird C Sheldahl is licensed under CC BY-SA 4.0
- "Animal Tissues and Organs" by Berkshire Community College Bioscience Image Library is in the Public Domain, CC0
- "Bipolar Interneuron.png" by Holly Fischer is licensed under CC BY 3.0
- "Complete neuron cell diagram numbered.svg" by LadyofHats is in the Public Domain
- "Digital Histology" by Department of Anatomy and Neurobiology and the Office of Faculty Affairs, Virginia Commonwealth University School of Medicine and the ALT Lab at Virginia Commonwealth University is licensed under CC BY 4.0
- "Multipolar Motor Neuron.png" by Holly Fischer is licensed under CC BY 3.0
- "Unipolar Sensory Neuron.png" by Holly Fischer is licensed under CC BY 3.0
Part 2: Introduction to the Nervous System Laboratory Activities
- "BIOL 250 Human Anatomy Lab Manual SU 19" by Yancy Aquino, Skyline College is licensed under CC BY-NC-SA 4.0