Afferent Lymphatic Vessels
BIOS 255 WEEK 5 Lab 5 -
Lymphatic System & Disease Resistance
1. Describe lymphatic system functions.
1. Drains excess interstitial fluid 2. Transports dietary lipids 3. Carries out immune response
2. Locate each of the following lymphatic vessels: right lymphatic duct, thoracic (left lymphatic) duct, right and left subclavian veins, and cisterna chyli.
a right lymphatic duct
b. right and left subclavian veins
c. thoracic (left lymphatic) duct
d. cisterna chyli
.
e. Determine the direction of blood and lymph movement between arterioles, blood and lymph capillaries, and venules.
•It starts as interstitial fluid.
•Then enters lymphatic capillaries.
•It travels in lymphatic vessels to the regional lymph nodes…
•Lymph ascends or descends to the thorax, either to the Left or Right Lymphatic Duct.
•Lymph fluid’s final destination is the bloodstream, as it enters through the Subclavian veins.
f. Describe the lymphatic system role with regard to lipids and lipid-soluble vitamins. - collects excess interstitial fluid
-different pressures
-returns excess fluid to blood
-blood volume needs to be normal or effeects BP
-plasma proteins that drain from blood vessels are returned to blood (water goes with plasma proteins) transports dietary lipids
- lipids and lipid-soluble vitamins (A, D,E,K) from GI tract travel in lymph before blood stream initiates specific immune responses
3. What are the thymus gland functions? The thymus gland is a gland that forms part of the immune system. It is situated in the upper part of the chest, behind the breastbone, and is made up of two lobes that join in front of the trachea. Each lobe is made of lymphoid tissue, consisting of tightly packed white blood cells and fat. The thymus enlarges from about the 12th week of gestation until puberty, when it begins to shrink.
4. Identify each of the following in
Lymphatic System & Disease Resistance
1. Describe lymphatic system functions.
1. Drains excess interstitial fluid 2. Transports dietary lipids 3. Carries out immune response
2. Locate each of the following lymphatic vessels: right lymphatic duct, thoracic (left lymphatic) duct, right and left subclavian veins, and cisterna chyli.
a right lymphatic duct
b. right and left subclavian veins
c. thoracic (left lymphatic) duct
d. cisterna chyli
.
e. Determine the direction of blood and lymph movement between arterioles, blood and lymph capillaries, and venules.
•It starts as interstitial fluid.
•Then enters lymphatic capillaries.
•It travels in lymphatic vessels to the regional lymph nodes…
•Lymph ascends or descends to the thorax, either to the Left or Right Lymphatic Duct.
•Lymph fluid’s final destination is the bloodstream, as it enters through the Subclavian veins.
f. Describe the lymphatic system role with regard to lipids and lipid-soluble vitamins. - collects excess interstitial fluid
-different pressures
-returns excess fluid to blood
-blood volume needs to be normal or effeects BP
-plasma proteins that drain from blood vessels are returned to blood (water goes with plasma proteins) transports dietary lipids
- lipids and lipid-soluble vitamins (A, D,E,K) from GI tract travel in lymph before blood stream initiates specific immune responses
3. What are the thymus gland functions? The thymus gland is a gland that forms part of the immune system. It is situated in the upper part of the chest, behind the breastbone, and is made up of two lobes that join in front of the trachea. Each lobe is made of lymphoid tissue, consisting of tightly packed white blood cells and fat. The thymus enlarges from about the 12th week of gestation until puberty, when it begins to shrink.
4. Identify each of the following in