click below
click below
Normal Size Small Size show me how
Lymphatic System
Lymphatic System and Immune Systems
| Question | Answer |
|---|---|
| Lymph flows only ____ | Towards |
| An important function of lymphatic system | Return excess tissue fluid and blood proteins to blood vascular system |
| Smallest lymph vessels | Lymph capillaries |
| First to receive lymph | Lymph capillaries |
| Empty into veins of the neck | Lymph ducts |
| High permability of lymphatic capillaries allows entrance of | Tissue fluid and protein molecules Bacteria, viruses, and cancer cells |
| Lymphatic collecting vessels are composed of the same (number) tunics as blood vessels | three |
| Lymph flow is aided/unaided by heartbeat | unaided |
| Lymph propelled by | Skeletal muscles bulging Nearby arteries pulsing Tunica media of the lymph vessels |
| Lymphatic collecting vessels contain more/less valves than veins do | more |
| Veins contain more/less valves than lymphatic collecting vesses | less |
| Human body contains around how many lymph nodes | 500 |