lymphatic system microbiology lab
DESCRIPTION
Lymphatic System Microbiology LabTRANSCRIPT
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Name________________________________________
LYMPHATIC SYSTEM & MICROBIOLOGY LAB
This laboratory exercise offers you the opportunity to explore structure and function of the lymphatic system and the world of microorganisms. A. Lymphatic system
In‐class: a. Chose two microscope slides of lymphatic organs or tissues provided today. b. View at 400X magnification. c. Sketch and label using lab resources.
Online:
a. View a microscope slide of a lymph node. Sketch or copy and paste image into your lab exercise and
label four structures at the 100Xmagnification. Use this resource: http://141.214.65.171/Histology/Basic%20Tissues/Epithelium%20and%20CT/027_HISTO_40X.svs/view.apml. Other sites are on the bottom of the Symbiosis Home Page.
b. Cite your source(s) (title, author, URL, date accessed)
Lymphatic organ or tissue sketches:
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B. Nonspecific Body Defenses
1. Name and explain three ways the integumentary system provides the first line of defense.
2. Draw lines connecting the phrases in Column A with the terms or phrases in Column B. Some terms from
Column A will be used more than once.
Column A Column B
Have microbial activity
Acids
Provide mechanical barriers
Lysozyme
Entraps microorganisms entering the respiratory passages
Mucosae
Part of the first line of defense
Mucus
Provide chemical barriers
Protein‐digesting enzymes
Sebum
Skin
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3. Describe the protective role of cilia in the first line of defense.
4. Phagocytosis
a. Define and sketch the process of phagocytosis.
b. Name and sketch two cell types that perform phagocytosis.
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5. Circe the “lost sheep” (the term that does not relate to the others) in each row:
a. redness pain swelling itching heat
b. neutrophils macrophages phagocytes natural killer cells
c. Inflammatory chemicals histamine kinins complement interferon
6. List three components of the inflammatory response.
C. Specific Body Defenses
Self & Non‐self
a. Draw a simple sketch of an antigen and explain how it operated in immunity. How does it relates to self and non‐self‐markers? What cell type synthesizes antibodies and in what organelle?
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b. What is the major histocompatibility complex? How does it contribute to homeostasis?
c. The immune system is supposed to defend you from harmful microorganisms. Why doesn’t it always work? In other words, why do some get sick and die from pathogens?
d. Describe how a particular blood antigen composition would respond to receiving a non‐compatible
blood type.
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D. Microbiology
1. Bacteria
In‐class instructions:
a. Choose three bacterial types from the ones provided today. b. View with oil immersion (refer to Microscope Lab). c. Sketch a colony of each and label with its name. d. “Characterize” your bacteria type using the chart.
Characterization example: Pseudomonas aeroginosa: A gram negative aerobic rod‐shaped
bacterium which does not form endospores, it performs catalase, benzidine and oxidase
reactions and does not metabolize glucose.
This description comes from finding the bacterial type on the chart, finding the column with the
“X” then following the “X” up. The description written in +, ‐, or words tells you the
characteristics of the bacterial type. Plus mean it does or has that quality, minus means that
action or quality is absent.
Online instructions:
a. Choose a type of bacteria that you are interested in. You can start here: http://tinyurl.com/bmf7fjm or find another site or book you like.
b. Sketch a cell or colony below. c. Write its name. d. Now see if your bacterial type is included in the Bacterial Classification Chart (see lab
instructions). You will see them listed by genus, the first word in the scientific name. e. “Characterize” your bacteria type using the chart.
Characterization example: Pseudomonas aeroginosa: A gram negative aerobic rod‐shaped
bacterium which does not form endospores, it performs catalase, benzidine and oxidase
reactions and does not metabolize glucose.
This description comes from finding the bacterial type on the chart, finding the column with the
“X” then following the “X” up. The description written in +, ‐, or words tells you the
characteristics of the bacterial type. Plus mean it does or has that quality, minus means that
action or quality is absent.
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Bacterial characterization and sketches:
2. Protozoa
In‐class instructions:
a. Choose a protozoan from those available today. b. View with oil immersion (refer to Microscope Lab). c. Sketch and label and structures you recognize or using available lab resources. d. Write a few sentences describing the mode of transmission and the symptoms of the disease.
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Online instructions:
a. Using this link, http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3103878/table/T1/, choose one protozoan disease from the list.
b. Perform an internet or library search for an image you can sketch or copy into this lab exercise. c. Cite your source (title, author, URL, date accessed or MLA format, if print resource) d. Label three structures. e. Write a few sentences describing how the disease is transmitted.
Protozoan sketches and description:
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E. Concept Map
Draw lines and explanations between these four organ systems. Find one way the immune system relates to each of the others.
Muscular System
Immune System
Skeletal System Cardiovascular System