ASU BIO 202 LAB. Lymphatic and
Immune System
Lymphatic System - answer-A network of vessels throughout the body that works in
parallel to cardiovascular system;
-Thin-walled, low-pressure vessels return lymph to venous circulation
-Lymphatic vessels function as clean -up crew
Lymph - answer-Excess tissue fluid, damaged cells, and microorganisms flow slowly
back towards the venous system that pass through lymph node
-Once interstitial fluid is in the lymph capillaries it is called lymph.
Lymph Node - answer-Part of the lymphatic organ
-Arrangements of lymphatic tissue surrounded by connective tissue capsule
-Found along lymphatic vessels and act as small filter that the lymph passes through
before going into venous circulation.
Immune System - answer-Involves the lymphatic vessels, lymph nodes, and other
lymphatic tissues that act as a major operational sites
-Attacks and destroys microorganisms and cancer cells at these checkpoint
-Does not have a set of organ in particular
Lymphocyte - answerCells of the immune system that makes use of other organ system
(in particular the lymphatic system) for conducting immune surveillance and isolating
and destroying potential pathogens.
Three Primary Functions of Lymphatic System - answer1) Transporting excess
interstitial fluid back to heart
2)Absorbing dietary fat
3)Activating the immune system
Transporting excess interstitial fluid back to the heart - answer-Process of filtration
pushes water out of blood into interstitial fluid (approx. 1.5mL/min fluid lost from
circulation.
Lymphatic system—-> picks up lost fluid—-> carries it through—-> Lymphatic vessels
——> returns it to the—-> Cardiovascular system
Lymph Capillary - answer-Where water in the interstitial fluid enter; surrounded by
capillary beds.
-Have highly permeable walls that allow large substances and volumes of fluid enter/exit
Once inside lymph capillaries fluid is called a lymph.
-Delivered to larger lymph-collecting vessels
, Lymph-collecting Vessels - answer-Lymph capillary --> lymph collecting vessels
-Contains valves to ensure that lymph flows in one direction.
-Drains to larger lymph trunks(9)
Lymph nodes: - answerArrangements of lymphatic tisssue surrounded by a connective
tissue capsule
- Lymph gland AKA lymph glands- Act as filters that remove potential pathogens from
the lymph before it is delivered to the blood.
-
Main Lymph Trunks - answer1)Jugular Trunks (2)
-Drains head and neck
2)Subclavian Trunks (2)
-Drain upper limb
3)Bronchomediastinal Trunks (2)
-Drains thorax
4)Intestinal Trunk
-Drains abdomen
5)Lumbar Trunks (2)
-Drains pelvis and lower limb
-Nine in total
Lymph trunks drain Into lymph ducks
Lymph Ducts - answer-Drains into lymph ducts
-Two types:
-Right lymphatic duct (Drains right upper limb and right side of head, neck, and thorax)
- Delivers lymph to the blood at the junction of the right subclavian and internal jugular
veins
Thoracic duct (Drains remaining lymph of body)
-Drains lymph into blood at the junction of the left subclavian + internal jugular veins
2.)Absorbing Dietary Fats - answer-Fats are not absorbed from small intestine directly
into blood capillaries because they are too large.
-Fats are instead absorbed in lymphatic capillary called lacteal
Lacteal - answerLacteal—>Delivers fats —-> lymph-collecting vessels and intestinal
trunks ——>which fatty lymph enters cisterna chyli——-> Thoracic duct—-> Fat joins
the rest of the lymph
Cisterna Chyli - answerLarge lymphatic vessel that drains fatty lymph into the thoracic
ducts at which the fatty lymph then joins the rest of the lymph
Immune System
Lymphatic System - answer-A network of vessels throughout the body that works in
parallel to cardiovascular system;
-Thin-walled, low-pressure vessels return lymph to venous circulation
-Lymphatic vessels function as clean -up crew
Lymph - answer-Excess tissue fluid, damaged cells, and microorganisms flow slowly
back towards the venous system that pass through lymph node
-Once interstitial fluid is in the lymph capillaries it is called lymph.
Lymph Node - answer-Part of the lymphatic organ
-Arrangements of lymphatic tissue surrounded by connective tissue capsule
-Found along lymphatic vessels and act as small filter that the lymph passes through
before going into venous circulation.
Immune System - answer-Involves the lymphatic vessels, lymph nodes, and other
lymphatic tissues that act as a major operational sites
-Attacks and destroys microorganisms and cancer cells at these checkpoint
-Does not have a set of organ in particular
Lymphocyte - answerCells of the immune system that makes use of other organ system
(in particular the lymphatic system) for conducting immune surveillance and isolating
and destroying potential pathogens.
Three Primary Functions of Lymphatic System - answer1) Transporting excess
interstitial fluid back to heart
2)Absorbing dietary fat
3)Activating the immune system
Transporting excess interstitial fluid back to the heart - answer-Process of filtration
pushes water out of blood into interstitial fluid (approx. 1.5mL/min fluid lost from
circulation.
Lymphatic system—-> picks up lost fluid—-> carries it through—-> Lymphatic vessels
——> returns it to the—-> Cardiovascular system
Lymph Capillary - answer-Where water in the interstitial fluid enter; surrounded by
capillary beds.
-Have highly permeable walls that allow large substances and volumes of fluid enter/exit
Once inside lymph capillaries fluid is called a lymph.
-Delivered to larger lymph-collecting vessels
, Lymph-collecting Vessels - answer-Lymph capillary --> lymph collecting vessels
-Contains valves to ensure that lymph flows in one direction.
-Drains to larger lymph trunks(9)
Lymph nodes: - answerArrangements of lymphatic tisssue surrounded by a connective
tissue capsule
- Lymph gland AKA lymph glands- Act as filters that remove potential pathogens from
the lymph before it is delivered to the blood.
-
Main Lymph Trunks - answer1)Jugular Trunks (2)
-Drains head and neck
2)Subclavian Trunks (2)
-Drain upper limb
3)Bronchomediastinal Trunks (2)
-Drains thorax
4)Intestinal Trunk
-Drains abdomen
5)Lumbar Trunks (2)
-Drains pelvis and lower limb
-Nine in total
Lymph trunks drain Into lymph ducks
Lymph Ducts - answer-Drains into lymph ducts
-Two types:
-Right lymphatic duct (Drains right upper limb and right side of head, neck, and thorax)
- Delivers lymph to the blood at the junction of the right subclavian and internal jugular
veins
Thoracic duct (Drains remaining lymph of body)
-Drains lymph into blood at the junction of the left subclavian + internal jugular veins
2.)Absorbing Dietary Fats - answer-Fats are not absorbed from small intestine directly
into blood capillaries because they are too large.
-Fats are instead absorbed in lymphatic capillary called lacteal
Lacteal - answerLacteal—>Delivers fats —-> lymph-collecting vessels and intestinal
trunks ——>which fatty lymph enters cisterna chyli——-> Thoracic duct—-> Fat joins
the rest of the lymph
Cisterna Chyli - answerLarge lymphatic vessel that drains fatty lymph into the thoracic
ducts at which the fatty lymph then joins the rest of the lymph
