IMM250H1 Lecture : Notes taken during lecture

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redtermite204

1 Mar 2011

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M idterm: 36 multiple choice questions; 2158 in the medical sciences building for the tutorial. Today"s material will not be on the midterm. Anatomical context where immune responses take place in body. movies are not testable material, just to fill in knowledge. Lymphocyte migration: lymphocytes always moving throughout body, need to patrol body for infection, tumour cell growth or antigen, anything dangerous or foreign to host. Lymphatic system network of conduits carrying lymph: plumbing , anything dangerous is put into lymph nodes, where they are. Interrogated : efferent going in, afferent where lymphocytes leave the nodes. Lymph interstitial fluid in tissues found between cells of body: enters lymphatic vessels to be sampled in the lymph nodes. systemic infection, for example, spleen is first point of contact with immune cells with pathogen: spleen filter agent for blood, lymph nodes filter agent for lymph.

Related Questions

Why is the spleen considered a secondary lymphoid organ?

A. B and T lymphocytes migrate to the spleen.

B.The spleen is not involved in the immune response even though it contains lymphocytes.

C.The spleen produces B and T lymphocytes.

D. The spleen contains erythrocytes as well as leukocytes.

limecockroach260

which of the following is NOT a function of lymph nodes?

a. cleansing the blood
b. providing a proliferation site for lymphocytes
c. activating the immune system
d. filtering lymph

jaderabbit973

2. The outermost layer of the human skin is called the __________. Dermis Fatty connective tissue Epidermis Ceruminous layer

3. The skin helps to protect the body from ultraviolet rays by ________________. A. Sweating B. Being flexible C. Using pigment - producing cells D. Being waterproof

4. Which of the following is NOT a protective function of the human skin? Protecting the body from chemicals Helping to regulate body temperature Protecting internal organs from abrasion Digesting external contaminants Creating a barrier between the body and ultraviolet rays from the sun

5. Which of the following is NOT an organ associated with the lymphatic system? Tonsils Spleen Pancreas Vermiform appendix Peyerâs patches

6. Tonsils ____________________. (Select all that apply) Are accessories of the integumentary system Are masses of lymphatic tissue embedded in mucous membranes Are regulated by the respiratory system Are frequently removed in a tonsillectomy Decrease in size as the body ages

7. During which stage of life are the lymphatic organs the most likely to be less functional and reduced in size? Infancy and Childhood Puberty Adulthood The size and function of the organs is not related to life stage

8. The two major groups of lymphocytes found in the body are the ___________. A lymphocytes and B lymphocytes Minor lymphocytes and Major lymphocytes B lymphocytes and C lymphocytes B lymphocytes and T lymphocytes

9. The organs associated with the Alimentary Canal share which similarity/similarities? They all belong to the lymphatic system They all belong to the gastrointestinal system Food does not pass directly through them during the process of digestion Food does pass directly through them during the process of digestion Both B and D

indigoporcupine929

IMM250H1 Lecture : Notes taken during lecture

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