Warmup: November 16, 2014
If a person does not
have enough platelets in her
blood, what will happen if
she gets a cut?
Lymphatic System
Chapter 23, Section 3
Objectives
• What is the function of the
lymphatic system?
• What are the parts of the
lymphatic system?
What is the lymphatic sytem?
*The lymphatic system is the group of vessels,
organs, and tissues that collects excess fluid and
returns it to the blood. The lymphatic system
also helps your body fight pathogens.
*It is composed of: lymph capillaries, lymph
vessels, bone marrow, lymph nodes, the thymus,
and the spleen,
Vocabulary
1. lymph capillaries-smallest vessels that carry
fluid collected by the lymphatic system (can
include dead cells or pathogens)
2. lymph vessels-larger vessels of the lymphatic
system
3. lymph nodes- small masses of tissue that
remove pathogens and dead cells from
lymph
4. lymph-fluid and particles absorbed by the
lymph capillaries
Lymph vessels and capillaries
Vocabulary cont….
5. Bone marrow-soft tissue inside bones that
makes red and white blood cells
6. lymphocytes-white blood cells part of the
lymphatic system that fights infection
7. thymus-located just above the heart, where T
cells develop further after the bone marrow
8. spleen-largest lymphatic organ, located in
abdomen, stores lymphocytes, fights infection,
destroys old blood cells
Lymph System In Body
Draw the picture
and label the:
Spleen, thymus,
lymph nodes, lymph
vessels, and tonsils
Spleen
Lymph vessel
More Vocabulary
9. tonsils- lymphatic tissue at the back of the
mouth
Summary
In-Class Questions
1. How do the lymphatic and circulatory systems
work together?
2.
Work with a partner to list (in order) how fluid
flows from the cardiovascular system to the
lymphatic system (after reading the section)
3.
Sometimes you can easily feel your lymph
nodes when they are swollen. If you had
swollen lymph nodes, what could you infer?
Homework 11/17
1. How does the lymphatic system fight infection?
2. Complete the Process Chart below to show how fluid travels
between the cardiovascular system and the lymphatic system.
1. Plasma is pushed out of capillaries.
2.
3.
4.
3. What are three things that can be found in lymph?
4. Why is it important that lymphatic tissue is spread throughout the
body?
Warmup: October 29, 2013
Name and describe three functions of
the lymphatic system.
Warmup 10/31
Describe (without notes) using all the
vocabulary words, the passageway air takes to
get into the lungs…. (at least 8 vocab words)