Urinary and Lymphatic Systems Functions of Lymphatic System
- Slides: 40
Urinary and Lymphatic Systems
Functions of Lymphatic System Filters lymph fluid Returns leaked fluid to circulatory system Produces and modifies cells of immune system to fight infection
Major Organs of the Lymphatic System Lymph Fluid Lymph Capillaries Lymph Vessels Lymph Nodes (nonsecreting "glands“) Thymus Spleen Tonsils
Major Organs of the Lymphatic System Lymph Fluid: The clear fluid found outside the cells which bathes the tissues. It is collected, filtered, and transported by the lymphatic system from around the tissues to the blood of the circulatory system.
Major Organs of the Lymphatic System Lymph Capillaries – collect lymph fluid from the tissues of the body Lymph Capillary Animation: http: //www. lymphnotes. com/article. php/id/151/
Lymph Capillaries Thin walled - pick up and recycle extra tissue fluid During inflammation, lymph capillaries can absorb: – Cell debris – Pathogens – Cancer cells Lymph circulation due to ?
Major Organs of the Lymphatic System Lymph Vessels transport lymph fluid to the circulatory system.
Lymphatic vessels comparable in structure to veins Damaged valves or blocked lymph vessels ? ? ?
Lymph Transport • The lymphatic system lacks a pumping organ • To propel lymph, vessels rely on: – Pulsations of nearby arteries – Movement of muscles throughout the body – Contractions of smooth muscle in the walls of the lymphatic vessels
Lymphoid Organs – aid in the production of lymphocytes (WBC) • • Lymph Nodes Spleen Thymus Tonsils
Lymphocytes • White Blood Cells (Lymphocytes) are the main cells involved in the immune response • Two main varieties: – T cells – B cells
White Blood Cells a. k. a Lymphocytes 1. Antigen – anything the body perceives as foreign – Bacteria and their toxins; viruses – Mismatched RBCs or cancer cells T cells and B cells protect the body against antigens
Lymphocytes a. k. a. (White Blood Cells) 2. T cells – Manage the immune response – Attack and destroy foreign cells 3. B cells – Produce plasma cells, which secrete antibodies – Antibodies immobilize antigens
Bone Marrow: Lymphopoiesis Lymphocytes are later also produced in thymus, spleen and tonsils Fig 23. 7
Lymph Nodes • Primary lymphatic organs of the body • Found within connective tissue and along lymphatic vessels • 2 basic functions: – Filtration –remove microorganisms, dead cells, and debris – Immune system activation – monitor and attack antigens
Lymph nodes Lymph Nodes Animation
Spleen • Largest lymphatic organ • Functions: – Site of white blood cell production – Immune surveillance and response – Cleanses the blood by removing dead red blood cells
Thymus Only lymphoid organ that does NOT fight antigens, it functions as “T-cell academy” – modifies T-cells
Tonsils & Adenoids • Simplest lymphatic organs • Trap bacteria and other antigens which work their way into the follicles where they are destroyed
The Urinary System
Functions of Urinary System ● Regulate fluid balance (fluid volume) of the body FILTER BLOOD ● Excrete waste products from the blood l Stabilize blood p. H l Regulate ion concentrations in the blood
Kidney Location
Major Organs of the Urinary System – Kidneys– main organs of the urinary system; have specialized cells called Nephrons that filter harmful poisons like urea from the blood
Major Organs of the Urinary System – Kidneys– main organs of the urinary system; have specialized cells called Nephrons that filter harmful poisons like urea from the blood
Major Organs of the Urinary System – Bladder –stores urine
Major Organs of the Urinary System – Bladder –stores urine
Major Organs of the Urinary System – Ureters– tubes that connect kidneys to bladder
Major Organs of the Urinary System – Ureters– tubes that connect kidneys to bladder
Major Organs of the Urinary System – Urethra– tube thru which urine exits the body
Major Organs of the Urinary System – Urethra– tube thru which urine exits the body
Major Organs of the Urinary System – – Kidneys– main organs of the urinary system; have specialized cells called Nephrons that filter harmful poisons like urea from the blood Bladder –stores urine Ureters– tubes that connect kidneys to bladder Urethra– tube thru which urine exits the body
2 Categories of Waste Removed By the Kidneys (produced by cellular respiration)
Excretion and other body systems
Cross section
Kidney Stones
Renal failure • Acute (sudden) kidney failure is the sudden loss of the ability of the kidneys to remove waste and concentrate urine. – Can be caused by: Dehydration, Hemorrhage, Injury, Septic shock, Serious illness, Surgery
Quick Time Review
- Lymph tissue fluid
- Lymphatic system organs and functions
- Functions of the lymphatic system
- Chapter 24 the immune and lymphatic systems and cancer
- What empties into the left subclavian vein
- Lymphatic system vs endocrine system
- Physiology of urine formation
- Kidneys location and structure figure 15-1
- The cf py/o means
- Interesting facts about the urinary system
- Urogenital papilla fetal pig
- The urinary system chapter 30
- Chapter 15 the urinary system figure 15-3
- Chapter 20 urinary/excretory system
- Urinary system model
- Urinary system model
- Placoid scales definition
- Urinary system powerpoint
- Proximal convoluted tubule histology
- Adh hormone function
- Ureter diameter
- Nephron urinary system
- L
- Defination of urinary system
- Homework
- Rhinarium
- Rat urinary system
- Vena cava function in excretory system
- Kidneys location and structure figure 15-2
- Juxtaglomerular cells vs macula densa
- Renal tubule
- Urinary system
- Flow of urine diagram
- Cortical nephron
- Countercurrent multiplier
- Urinary system
- Bladder location
- Urinary system root words
- What causes uti
- Urinary system
- Figure 15-3 is a diagram of the nephron