Structure of Lymphatic System
Components of Lymphatic System
The Lymph
Function of Lymphatic system
All you need to know about Lymphatic System
EFFECT OF CHANGES IN
SODIUM ION CONCENTRATION
Normal sodium ion concentration in blood is 135 to 145
mEq/L. Change in concentration of sodium ion does not alter the electrical activity of heart severely. Only the low level of sodium ion in body fluids reduces the electrical activity of cardiac muscle and electrocardiogram (ECG) shows low-voltage waves.
Changes in the concentration of potassium and
calcium ions have significant effects on heart.
EFFECT OF CHANGES IN
SODIUM ION CONCENTRATION
Normal sodium ion concentration in blood is 135 to 145
mEq/L. Change in concentration of sodium ion does not alter the electrical activity of heart severely. Only the low level of sodium ion in body fluids reduces the electrical activity of cardiac muscle and electrocardiogram (ECG) shows low-voltage waves.
Changes in the concentration of potassium and
calcium ions have significant effects on heart.
EFFECT OF CHANGES IN
SODIUM ION CONCENTRATION
Normal sodium ion concentration in blood is 135 to 145
mEq/L. Change in concentration of sodium ion does not alter the electrical activity of heart severely. Only the low level of sodium ion in body fluids reduces the electrical activity of cardiac muscle and electrocardiogram (ECG) shows low-voltage waves.
Changes in the concentration of potassium and
calcium ions have significant effects on heart.
EFFECT OF CHANGES IN
SODIUM ION CONCENTRATION
Normal sodium ion concentration in blood is 135 to 145
mEq/L. Change in concentration of sodium ion does not alter the electrical activity of heart severely. Only the low level of sodium ion in body fluids reduces the electrical activity of cardiac muscle and electrocardiogram (ECG) shows low-voltage waves.
Changes in the concentration of potassium and
calcium ions have significant effects on heart.
Not for each other
2. 2.03 Remember the structures of
the lymphatic system
What are the structures of the
lymphatic system?
2.03 Remember the stuctures of the lymphatic system 2
3. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
Lymph fluid
Lymph vessels
Lymph nodes
Lymph glands
3
4. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
4
Lymph – straw-colored fluid that leaves capillary and goes
into tissue spaces.
• Similar to plasma
• Aka interstitial fluid
• Carries the nutrients, oxygen
and hormones to cells
• Carries waste back to capillaries
5. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
5
Lymph vessels - transport excess lymph fluid
back to circulatory system.
• Located in almost all tissues and organs
• Closely parallel veins
• Since the lymphatic system has no pump,
skeletal muscle contractions moves lymph
through the vessels
• Valves prevent backward flow
• Only move in one directions (from body
towards heart)
6. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
6
Lymph vessels
parallel to blood
vessels
7. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
7
Lymph vessels
• Lacteals
• Specialized lymph vessels in
the small intestines that
absorbs digested fat
8. Structures of the lymphatic system
8
Lymph vessels -
• Lymph vessels join together to form larger lymph vessels
• Large lymph vessels join together to form lymphatics
• Two main lymphatics:
• Thoracic duct
• Also called the left lymphatic duct
• Receives lymph from the left side of chest, head, arm
and neck, the entire abdominal area and entire lower
body
• Dumps back into left subclavian SVC
• Right lymphatic duct
• Receives lymph from the right side of the chest, head,
arm and neck
• Dumps back into right subclavian SVC
9. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
9
Lymph nodes
• Tiny, oval-shaped structures!
• Range in size from a pinhead to an
almond
• Site of lymphocyte formation and
filter for screening out harmful
substances (ex: bacteria, cancer)
• If substances can’t be destroyed,
node becomes inflamed
Lymph node
10. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
10
Lymph nodes
• Where are lymph nodes
located?
11. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
11
Tonsils – masses of lymphatic tissue that
produce lymphocytes and filter bacteria
• 3 pairs
• Palatine tonsils: sides of throat
• Adenoids / Pharyngeal tonsils: upper throat
• Lingual tonsils: back of tongue
12. 2.03 Remember the stuctures of the lymphatic system
Structures of the
lymphatic system
12
Say “aahhh”
Why this is helpful?
13. Structures of the lymphatic system
13
Spleen
• Sac-like mass of lymphatic tissue
• LARGEST lymphatic structure
• Located in the LUQ – just below diaphragm
• Forms lymphocytes and monocytes
• Filters blood
• Stores large amounts of RBCs – contracts during vigorous
exercise or loss of blood to release RBCs
• Destroys or removes old or fragile RBCs – preserves
hemoglobin
14. 2.03 Remember the stuctures of the lymphatic system
Thymus gland
• Located in the upper, anterior thorax
(chest), above the heart
• Produces T lymphocytes
• Also an endocrine gland because also
secretes hormones
14
Structures of the lymphatic system
15. 2.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
15
16. 2.03 Remember the structures of
the lymphatic system
What are the structures of the
lymphatic system?
2.03 Remember the stuctures of the lymphatic system 16
Notas del editor
Aka intercellular fluid and tissue fluid
Water, lymphocytes, granulocytes, oxygen, nutrients, co2. NO rbc’s or proteins.
***LYMPHATIC STRUCTURES THAT CLOSELY PARALLEL VEINS ARE CALLED = LYMPH VESSELS
Not in hair and nails
***LYMPHATIC VESSEL THAT COLLECTS LYMPH FROM LEFT CHEST, ABDOMEN AND LOWER LIMBS = THORACIC DUCT
***TINY OVAL SHAPED LYMPH STRUCTURES LOCATED THROUGHOUT BODY = LYMPH NODES
Adentitis – inflamed nodes.
The two primary types of lymphocytes are B lymphocytes and T lymphocytes, or B cells and T cells. Both originate from stem cells in the bone marrow and are initially similar in appearance. Some lymphocytes migrate to the thymus, where they mature into T cells; others remain in the bone marrow, where—in humans—they develop into B cells.
All throughout the body
Also behind knee
they get smaller in size as person gets older
ADENOIDS – soft palate middle
Not located along lymph vessels. That’s why theyre not nodes.
Have students look in someone else’s mouth they say aaahhh. See what happens. Then trade why is this helpful. Helps you see.
***LARGEST LYMPH STRUCTURE = SPLEEN
***LYMPHATIC STRUCTURE LOCATED IN LUQ OF ABD IS = SPLEEN
Bone marrow really forms. Spleen mostly stores though it does “maintain hemopoeitic capabilities” according to one source.
Lymphocytes mature here
Hormones that help person develop healthy immune system
Largest at puberty, then atrophies throughout life